Murray Hooper v. David Shinn ( 2021 )


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  •                        FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    MURRAY HOOPER,                               No. 08-99024
    Petitioner-Appellant,
    D.C. No.
    v.                      2:98-CV-02164-SMM
    DAVID SHINN, * Warden,
    Respondent-Appellee.                     OPINION
    Appeal from the United States District Court
    for the District of Arizona
    Stephen M. McNamee, District Judge, Presiding
    Argued and Submitted September 16, 2020
    San Francisco, California
    Filed January 8, 2021
    Before: Jacqueline H. Nguyen, Mark J. Bennett, and
    Ryan D. Nelson, Circuit Judges.
    Opinion by Judge Bennett
    *
    Pursuant to Federal Rule of Appellate Procedure 43(c)(2), David
    Shinn is substituted for his predecessor, Dora B. Schriro, as Warden.
    2                        HOOPER V. SHINN
    SUMMARY **
    Habeas Corpus / Death Penalty
    The panel affirmed the district court’s denial of Murray
    Hooper’s habeas corpus petition challenging his Arizona
    state conviction and death sentence for multiple offenses
    including two counts of first-degree murder.
    The panel addressed three certified issues: (1) whether
    the prosecution’s nondisclosure and delayed disclosures of
    evidence violated Hooper’s due process rights under Brady
    v. Maryland, 
    373 U.S. 83
     (1963); (2) whether the district
    court erred in denying Hooper leave to amend his petition to
    add a claim that his death sentence violates the Eighth and
    Fourteenth Amendments because his sentence was based, in
    part, on now-invalid convictions; and (3) whether Martinez
    v. Ryan, 
    566 U.S. 1
     (2012), excuses the procedural default
    of his claim that his trial counsel rendered ineffective
    assistance at sentencing.
    Analyzing Hooper’s Brady claims under the
    Antiterrorism and Effective Death Penalty Act of 1996
    (AEDPA), the panel held that:
    •   The Arizona Supreme Court did not unreasonably
    apply clearly established law in concluding that
    Hooper failed to show that disclosure of benefits that
    the State and a county investigator provided to a
    witness and his wife might have affected the outcome
    **
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    HOOPER V. SHINN                          3
    of the trial; that the panel is therefore barred under 
    28 U.S.C. § 2254
    (d)(1) from reviewing Hooper’s claim
    based on these benefits; and that the Arizona
    Supreme Court’s determination that the benefits
    were cumulative impeachment evidence was not an
    unreasonable         factual     determination     under
    
    28 U.S.C. § 2254
    (d)(2).
    •   Because there was no clearly established law
    governing Brady claims based on delayed
    disclosures where the defense had the opportunity to
    use the evidence at trial, AEDPA precludes review
    of the Arizona Supreme Court’s decision on
    Hooper’s claim regarding the delayed disclosure of
    police reports.
    •   Because there was no clearly established law
    concerning such delayed disclosures, Hooper’s
    argument that the Arizona Supreme Court’s decision
    on delayed disclosure of photos was an unreasonable
    application of clearly established law likewise fails;
    and assuming without deciding that the Arizona
    Supreme Court’s decision on the photos was based
    on an unreasonable factual determination, the
    outcome on the Brady claims does not change
    because the claims fail even on de novo review.
    The panel wrote that even if it could review all of the
    Brady claims de novo, they would fail because the delay in
    producing the photos and police reports, and the failure to
    disclose the benefits to the witness and his wife, were not
    material, as they would not have put the whole case in such
    a different light as to undermine confidence in the verdict.
    4                    HOOPER V. SHINN
    The panel held that the district court properly denied
    Hooper’s request for leave to amend his petition to include
    claims that his death sentence violates the Eighth and
    Fourteenth Amendments because any amendment would be
    futile.
    The panel held that Hooper—who did not raise in his
    first state post-conviction petition his claim of ineffective
    assistance of sentencing counsel—failed to establish cause
    under Martinez to excuse the procedural default. The panel
    held that because Hooper failed to show what additional
    evidence he could have obtained from discovery or an
    evidentiary hearing to support that he was prejudiced by trial
    counsel’s performance, the district court did not abuse its
    discretion in denying his requests for discovery and an
    evidentiary hearing.
    The panel declined to expand the certificate of
    appealability to include two claims as to which it deemed the
    district court’s decision not debatable among reasonable
    jurists.
    COUNSEL
    Thomas J. Phalen (argued), Phoenix, Arizona; Jon M. Sands,
    Federal Public Defender; Dale A. Baich, Assistant Federal
    Public Defender; Office of the Federal Public Defender,
    Phoenix, Arizona; for Petitioner-Appellant.
    Jeffrey L. Sparks (argued), Jon G. Anderson, and John
    Pressley Todd, Assistant Attorneys General; Kent Cattani,
    Chief Counsel, Capital Litigation Section/Criminal Appeals
    Section; Office of the Attorney General, Phoenix, Arizona;
    for Respondent-Appellee.
    HOOPER V. SHINN                        5
    OPINION
    BENNETT, Circuit Judge:
    In this murder-for-hire case, an Arizona jury convicted
    Murray Hooper on all counts, including two counts of first-
    degree murder. The trial court sentenced Hooper to death.
    On New Year’s Eve 1980, while Pat Redmond, his wife
    Marilyn Redmond, and Marilyn’s mother Helen Phelps
    (who was visiting) were home preparing for a festive dinner,
    Hooper, William Bracy, and Ed McCall forced their way
    into the home at gunpoint. Hooper and his coconspirators
    demanded jewelry, money, and guns. They herded their
    victims into the master bedroom and forced them to lie face
    down on the bed. Redmond, Marilyn, and Phelps were then
    bound and gagged. One or all the intruders shot each victim
    in the head, and one of the intruders slashed Redmond’s
    throat. Redmond and Phelps died, but Marilyn survived.
    Hooper appeals the district court’s denial of his petition
    for a writ of habeas corpus. He raises three certified issues:
    (1) whether the prosecution’s nondisclosure and delayed
    disclosures of evidence violated his due process rights under
    Brady v. Maryland, 
    373 U.S. 83
     (1963); (2) whether the
    district court erred in denying him leave to amend his
    petition to add a claim that his death sentence violates the
    Eighth and Fourteenth Amendments because his sentence
    was based, in part, on now-invalid convictions; and
    (3) whether Martinez v. Ryan, 
    566 U.S. 1
     (2012), excuses the
    procedural default of his claim that his trial counsel rendered
    ineffective assistance at sentencing. Hooper also raises two
    uncertified issues: (1) whether he was unconstitutionally
    shackled at trial; and (2) whether the unconstitutional
    shackling caused him to involuntarily waive his right to be
    present at voir dire because it forced him to choose between
    two constitutional rights.
    6                         HOOPER V. SHINN
    We have jurisdiction under 
    28 U.S.C. §§ 1291
     and 2253,
    and we affirm the district court’s denial of habeas relief.
    I. Facts and Procedural History
    A. The Conspiracy and Murders
    Robert Cruz, head of a Chicago crime organization, hired
    Hooper, Bracy, and McCall to kill Redmond.1 Redmond and
    Ron Lukezic co-owned Graphic Dimensions, a successful
    Phoenix printing business. In the summer of 1980, Cruz and
    Arthur Ross (Lukezic’s brother-in-law) offered Graphic
    Dimensions several lucrative printing contracts with Las
    Vegas hotels, but Redmond rejected the offers. Cruz was
    unhappy and wanted Redmond killed to get Redmond’s
    interest in the business. His plan was to eventually take over
    the entire business by having Lukezic killed.
    In September 1980, Cruz offered Arnold Merrill $10,000
    to kill Redmond, but Merrill refused. In early December
    1980, Hooper and Bracy, who lived in Chicago, flew from
    Chicago to Phoenix, and Cruz and Merrill picked them up at
    the airport. Over the next several days, Merrill drove Hooper
    and Bracy to various locations. On one occasion, Merrill
    took the men to see Cruz, and Merrill saw Cruz give a stack
    of $100 bills to Bracy, who gave some to Hooper. That same
    day Merrill drove the men to the Gun Trader, a gun store
    owned by Merrill’s brother, Raymond Kleinfeld. Hooper
    1
    As discussed below, identification was a critical issue in the case.
    Hooper and Bracy are black, and McCall is white. Hooper was thirty-
    five when he committed the Redmond crimes. Bracy died of natural
    causes in 2005, see Motion to Dismiss, Bracy v. Schriro, No. 95-cv-
    02339 PHX-SSM (D. Ariz. Sept. 7, 2005), ECF No. 94, and McCall is
    also deceased.
    HOOPER V. SHINN                        7
    picked out a large knife, paid for by Cruz, and Kleinfeld gave
    Bracy a package containing three guns.
    At some point, Merrill, Hooper, and Bracy spotted
    Redmond leaving a bar and followed him as he drove away
    from the bar. During the chase, Hooper held his gun out of
    the window to shoot Redmond. Merrill sped up and turned
    into a parking lot to prevent Hooper from shooting
    Redmond. After this aborted attempt, Hooper and Bracy
    moved out of Merrill’s home and into the apartment of
    Valinda Lee Harper and Nina Marie Louie, two women
    Merrill had introduced to Hooper and Bracy. At some point
    during their trip, Merrill also introduced Hooper and Bracy
    to McCall. Hooper and Bracy eventually returned to
    Chicago.
    Hooper and Bracy came back to Phoenix on December
    30, 1980. That day, at Cruz’s direction, Merrill and George
    Campagnoni drove by Redmond’s home and Graphic
    Dimensions to verify the addresses. The next morning,
    McCall dropped off Hooper and Bracy at Merrill’s home,
    and Merrill gave Bracy a piece of paper with directions to
    Redmond’s home and Graphic Dimensions. Later that
    morning, McCall came back for Hooper and Bracy, and the
    three left Merrill’s home. Dean Bauer (Cruz’s employee)
    then came to Merrill’s home and dropped off two airplane
    tickets from Phoenix to Chicago for “Sam Johnson” and
    “Tony Jones.”
    That same day, Louie arrived at her apartment around
    noon. McCall, Hooper, and Bracy were already there. Bracy
    asked Louie “what time it got dark” and said that they had
    “some business to take care of.” All three men were armed
    with guns. Louie had to work that night, and Harper
    borrowed McCall’s car to drive Louie to work. Before
    Harper and Louie left the apartment around 5:45 p.m.,
    8                    HOOPER V. SHINN
    McCall told Harper that she needed to come back quickly
    because “they had a very important appointment.”
    Later that night, Hooper, Bracy, and McCall went to
    Redmond’s home and killed Redmond and Phelps and
    attempted to kill Marilyn. After the murders, they went to
    Merrill’s home. Around midnight, Campagnoni drove
    Hooper and Bracy from Merrill’s home to the Phoenix
    airport with the airline tickets for “Sam Johnson” and “Tony
    Jones.”
    The day after the murders, McCall went to Harper’s and
    Louie’s apartment and told them how the murders had been
    committed, including describing his role and Hooper’s role
    in committing them. He told them that it was a “contract . . .
    hit, not [a] robbery” and that Hooper had cut Redmond’s
    throat and shot Marilyn. McCall later detailed the crimes to
    Merrill and told him that he was expecting $10,000 from
    Chicago.
    B. The Police Investigation
    On New Year’s Eve 1980, Officer Louis Martinez
    responded to a call that there were two or possibly three dead
    bodies at the address of the Redmond home. When Officer
    Martinez arrived, he questioned Marilyn who was conscious
    but “had a very detached look on her face.” Marilyn told
    him, “Three black men came in and robbed us.” She initially
    reported to Officer Thomas Varela, who also questioned her
    at the scene, that the intruders were all black. But Officer
    Varela asked if she was sure, and Marilyn then told him that
    two of the intruders were black and one was white. Later
    that same night at the hospital, Marilyn reported to Officer
    Jesus Perez that one of the intruders was white and the other
    two were black. She also reported that one of the black
    males was wearing a tan leather jacket with dark pants.
    HOOPER V. SHINN                       9
    Around 9 p.m., about two hours after the murders, three
    black men—Ronald Bradford, Michael Bradford, and
    Novell Ward (collectively, the “Bradfords and Ward”)—
    were arrested on traffic, weapons, and drug charges. Ronald
    Bradford was very slender and had a wart on his forehead
    above his nose. Ward was wearing a brown vinyl or leather
    jacket with a fleece collar at the time of his arrest.
    Around 10:05 p.m., while the Bradfords and Ward were
    in custody, the Maricopa County Sheriff’s Office received
    an anonymous call that a black man named “Slim” with a
    wart on his nose was involved in the Redmond murders. The
    caller said that Slim was currently at the corner of 13th and
    Washington Streets. The police interviewed, photographed,
    and fingerprinted the Bradfords and Ward, and the police
    ultimately ruled them out as suspects in the Redmond
    crimes.
    On January 1, 1981, Harper called the police and
    implicated Hooper, Bracy, and McCall in the murders.
    During her interview, Harper said that she was with Bracy in
    Phoenix on New Year’s Eve.
    On January 4, 1981, officers executed a search warrant
    on McCall’s home and vehicle. They found Long’s
    Drugstore receipts inside his vehicle, showing that three
    pairs of surgical gloves and adhesive tape had been
    purchased the same day as the murders. They also found two
    plastic gloves in a garbage bag at McCall’s home.
    A fingerprint analyst lifted fingerprints from McCall’s
    vehicle and the Redmond home. The analyst was unable to
    match any to Hooper, Bracy, McCall, or the Bradfords and
    Ward.
    The State’s criminalist analyzed the bullets removed
    from the victims and found at the crime scene and
    10                    HOOPER V. SHINN
    determined that they were .38 caliber bullets, and that all had
    been fired from the same gun. The bullets could have been
    fired from a Colt Trooper .357 magnum.
    Fifty-three days after the murders, Marilyn flew to
    Chicago to view lineups of Hooper and Bracy. After
    viewing the first lineup, which included Bracy, Marilyn
    reserved judgment. After viewing the second lineup with
    Hooper, Marilyn positively identified Hooper. Marilyn then
    asked to see the first lineup again, and she identified Bracy.
    C. The Trial
    Hooper and Bracy were tried together. Each was
    charged with conspiracy to commit first-degree murder
    (Count One), two counts of first-degree murder (Counts Two
    and Three), one count of attempted first-degree murder
    (Count Four), three counts of kidnapping (Counts Five to
    Seven), three counts of armed robbery (Counts Eight to
    Ten), and one count of first-degree burglary (Count Eleven).
    Their trial started on October 20, 1982. The jury convicted
    Hooper and Bracy on all counts on December 24, 1982.
    1. Hooper’s Defense Theory
    Hooper’s and Bracy’s primary defense theory was that
    they were in Chicago at the time of the murders. They also
    argued that the prosecution’s investigation was improper,
    mainly because of the improper conduct of the State’s
    investigator, Daniel Ryan. They further argued that the
    police had wrongly eliminated the Bradfords and Ward as
    suspects.
    Hooper did not testify, but his counsel laid out Hooper’s
    defense in his opening statement. Hooper and Bracy had
    come to Arizona in early December 1980, but not to kill
    HOOPER V. SHINN                      11
    Redmond. Cruz and Merrill wanted to take over the South
    Phoenix drug business, and they brought Hooper and Bracy
    to Arizona to persuade them to kill the top drug dealers in
    South Phoenix. Hooper and Bracy refused the job. In an
    attempt to change their minds, Merrill introduced them to
    women (Harper and Louie) and took them to the Gun Trader,
    on Cruz’s tab. Cruz also gave them money. But Hooper and
    Bracy still refused the job and left Arizona.
    Cruz, Merrill, Campagnoni, McCall, Harper, and Louie
    then become “paranoid” that Hooper and Bracy would turn
    on them by informing the South Phoenix drug dealers about
    their takeover plans. This motivated the group to frame
    Hooper and Bracy for the Redmond murders. The group
    then had McCall pay two unnamed black men to go with him
    to Redmond’s home while McCall committed the murders,
    and one day later Harper falsely reported to the police that
    McCall, Hooper, and Bracy had committed the murders.
    2. The State’s Evidence
    The prosecution presented overwhelming evidence of
    Hooper’s guilt. The most important witness was Marilyn, as
    she was the only one who saw the intruders in her home.
    Marilyn identified Hooper, Bracy, and McCall as the
    murderers. Her in-court identifications were certain, and she
    did not waiver when the defense suggested she could be
    mistaken. The jury also learned that Marilyn had picked
    Hooper and Bracy out of lineups before trial.
    Marilyn provided very specific details about her lengthy
    encounter with the murderers. Marilyn explained that they
    gave her directions and asked her several questions. She
    looked at their faces each time they spoke to her. At one
    point during the encounter, she was positioned “[e]lbow to
    elbow” with Hooper and she looked at him. She described
    12                    HOOPER V. SHINN
    the clothing that each murderer wore. Bracy was wearing a
    tan leather jacket, dark slacks, and a dark shirt. Hooper was
    wearing a darker brown sports or leather coat and dark
    slacks. McCall was wearing a light tan suit.
    Marilyn testified that the men forced their way into the
    home at gunpoint. Bracy directed her to hold the family dog
    and close the drapes, and she complied. The intruders
    demanded jewelry and money and asked if there was a safe
    or any guns in the home. She gave Bracy the jewelry she
    was wearing, told them there was a gun in the nightstand,
    and showed Hooper the guns in the hall closet. Redmond
    gave them his watch and ring, and one of the intruders
    grabbed Phelps’s wedding ring as she tried to hide it under a
    pillow. All three victims were eventually told to lie on the
    bed, and Hooper taped their hands behind their backs.
    Hooper then gagged all three using socks. Marilyn heard
    McCall say, “[W]e don’t need these two anymore,” and then
    she heard two shots. That was the last thing she remembered
    before waking up.
    The defense tried to discredit Marilyn by pointing out
    inconsistencies between her testimony and prior statements.
    For example, Marilyn initially reported to some witnesses
    that the intruders were all black and that two wore masks.
    Marilyn testified that she did not recall making the prior
    statements or that they were wrong or had been
    misinterpreted. The defense also tried to cast doubt on
    Marilyn’s lineup identifications by, among other things,
    suggesting that the State’s investigator, Ryan, had shown her
    pictures of Hooper and Bracy before the lineups. Marilyn
    testified that did not happen.
    The defense presented an expert on human perception
    and memory who testified that people make more mistakes
    when they try to identify a person of a different race and that
    HOOPER V. SHINN                        13
    violent events are more poorly stored in people’s memories.
    On cross-examination, however, the expert conceded that
    she could not opine on whether Marilyn experienced any
    cross-racial identification problems. And the prosecutor
    elicited testimony showing that Marilyn was skilled at
    recognizing faces. She testified that she had worked as a
    sales receptionist for seven years and was like a “visual
    Rolodex” for the company.
    Louie was also an important witness. She testified that
    she met Hooper and Bracy in early December 1980 in
    Phoenix. She overheard Bracy say that “he had a big job to
    do” for $50,000 and “it wasn’t going to be very pretty.”
    Bracy told her that he and Hooper would return to Phoenix
    on New Year’s Eve.
    On New Year’s Eve, Louie saw Hooper, Bracy, and
    McCall at her apartment. McCall was wearing a suit, Bracy
    and Hooper were wearing slacks and dark shirts, and one of
    them had a brown leather jacket. She testified that all three
    were armed with guns, and Hooper had a large gun “similar
    to a .357 magnum or a large-barrel .38.” Bracy asked her
    what time it got dark and said that they had “some business
    to take care of.” McCall let Harper use his car to drive Louie
    to work that night. McCall told Harper that she needed to
    come back quickly because “they had a very important
    appointment.”
    The next day, McCall came to Louie’s apartment and
    discussed the Redmond crimes. While watching the news,
    McCall corrected the newscaster by stating that Marilyn was
    not shot in the face but in the back of the head, like the other
    two; the victims were not tied up, but were taped; and only
    Redmond’s throat had been slashed. He said that Hooper
    was the one who had shot Marilyn and cut Redmond’s
    14                          HOOPER V. SHINN
    throat. McCall stated that it was a “professional job” and a
    “contract . . . hit, not [a] robbery,” and that they wore gloves.
    The State presented evidence corroborating parts of
    McCall’s statements to Louie. It offered the two Long’s
    Drugstore receipts found in McCall’s vehicle, showing that
    three pairs of gloves and tape had been purchased on the day
    of the murders. A Long’s Drugstore employee testified that
    two men, one black and one white, bought three pairs of
    gloves and adhesive tape on the day of the murders.
    Redmond’s neighbors reported that a vehicle matching the
    description of McCall’s car had been near the Redmond
    home around the time of the murders.
    Other evidence also corroborated Louie’s testimony. An
    officer testified that Harper had called the police the day
    after the murders and implicated Hooper, Bracy, and McCall
    in the Redmond murders. The jury also learned that in a later
    police interview, Harper said that she was with Bracy in
    Phoenix on New Year’s Eve. 2
    Campagnoni testified that he saw Hooper and Bracy at
    Merrill’s home on New Year’s Eve. He saw Merrill give
    Bracy a piece of paper with directions to the Redmond home
    and Graphic Dimensions. Campagnoni testified that after
    Hooper and Bracy left, Bauer came to Merrill’s home and
    dropped off airline tickets with the names “Sam Johnson”
    and “Tony Jones.”
    Campagnoni next saw Hooper, Bracy, and McCall later
    that evening when they returned to Merrill’s home. The
    three had jewelry, some of which looked very similar to a
    ring and watch owned by Redmond. Campagnoni drove
    2
    Harper did not testify because she could not be found.
    HOOPER V. SHINN                      15
    Hooper and Bracy to the airport that night around midnight.
    Bracy had the airline tickets that Bauer had dropped off
    earlier, and Bracy told Hooper that he would be “Tony
    Jones” and Hooper would be “Sam Johnson.”
    Merrill also testified. He described the origin of and
    motive for the plan to kill Redmond, including that he had
    refused Cruz’s offer to kill Redmond for $10,000. Merrill
    provided many details about Hooper’s and Bracy’s first trip
    to Arizona in early December 1980. He said that he and Cruz
    picked up Hooper and Bracy from the Phoenix airport.
    During early December: he saw Cruz give Bracy a stack of
    money, which Bracy shared with Hooper; he took the men
    to the Gun Trader where they picked up three guns and
    Hooper picked out a knife, which was paid for by Cruz and
    looked like the same knife found at the crime scene; Merrill,
    Hooper, and Bracy followed Redmond from a bar called
    Chester’s Lounge, Hooper pointed his gun out the car
    window to shoot Redmond, but Merrill stopped Hooper from
    firing by turning into a parking lot; and after the chase,
    Hooper and Bracy moved from Merrill’s home into Harper’s
    and Louie’s apartment.
    Merrill testified that, on December 30, 1980, Cruz
    instructed him to tell McCall to pick up Bracy and Hooper
    from the Phoenix airport and to pick up a package from the
    Gun Trader. That same day, at Cruz’s direction, Merrill and
    Campagnoni verified the addresses for the Redmond home
    and Graphic Dimensions. The next morning, McCall
    dropped off Hooper and Bracy at Merrill’s home. McCall
    came back later that morning and left with Hooper and
    Bracy. Bauer came to Merrill’s home in the afternoon and
    dropped off two American Airlines tickets from Phoenix to
    Chicago.
    16                      HOOPER V. SHINN
    Merrill testified that Hooper, Bracy, and McCall came to
    his home around 8:30 p.m. on New Year’s Eve. They had
    with them several items that might have come from the
    Redmond home, including a watch, ring, and gun holster.
    Several days later, McCall told Merrill that he, Hooper, and
    Bracy had committed the Redmond crimes. McCall told
    Merrill that he was expecting a payment of $10,000 from
    Chicago for the murders.
    Merrill was severely impeached. Most significantly, the
    jury learned that he had received a deal from the State giving
    him immunity for the Redmond crimes, including the first-
    degree murders of Redmond and Phelps for which he could
    have received the death penalty, as well as immunity for
    unrelated crimes. 3 Thus, the jury knew Merrill had a very
    strong personal stake in the case and motive to lie. The
    defense also showed that Merrill had received special
    treatment from the State and Ryan: Merrill was placed in a
    more inmate-friendly, out-of-state prison as part of his deal;
    Ryan did not immediately arrest him in New York even
    though he was wanted for first-degree murder; Ryan allowed
    him to travel unrestrained from New York to Arizona despite
    being a wanted murderer; and Ryan took Merrill out of jail
    for a conjugal visit.
    The defense also cast significant doubt on Merrill’s
    credibility by showing that Ryan had stopped his tape-
    recorded interview with Merrill more than twenty times.
    Neither Merrill nor Ryan could provide any plausible
    explanations for the interruptions, and the defense
    persuasively argued that Ryan must have paused the tapes to
    coach Merrill on what to say. The defense gave the jury
    3
    As part of his plea deal, Merrill pleaded guilty to an unrelated
    burglary and theft and received an eight-year sentence.
    HOOPER V. SHINN                        17
    many other reasons to discredit Merrill’s testimony: he had
    previously lied to the police in this case and had initially
    helped cover up the crimes; he was part of a group that
    committed burglaries and robberies, and he had sold stolen
    property; he had hired someone to commit arson for Cruz;
    he was a drug dealer and had a long history of abusing
    prescription medications; and Merrill’s friend, Campagnoni,
    testified that Merrill was a braggart, and even Merrill’s own
    brother, Kleinfeld, testified that he was a “story teller, liar,
    [and] bragger.”
    The defense further impeached Merrill by highlighting
    many inconsistencies between his testimony and his prior
    statements. For example: Merrill testified that he did not
    get together with Campagnoni to make up a story, but
    Merrill had previously stated that he told Campagnoni to
    deny to the police that any black individuals had been at his
    home; Merrill testified that the bullets he threw away in a
    canal could not have been the same type that killed
    Redmond, but he previously testified that they could have
    been; and he testified that he was not the leader of a criminal
    group, which contradicted his prior testimony. Parts of
    Merrill’s testimony also contradicted other evidence, giving
    the jury even more reasons to disbelieve him. For example,
    Kleinfeld testified that Merrill picked out the knife at the
    Gun Trader, not Hooper, and Campagnoni testified that
    Merrill gave Bracy .38 caliber ammunition on New Year’s
    Eve, but Merrill denied giving any bullets to Hooper, Bracy,
    or McCall.
    The State’s case included evidence beyond the
    testimonies of Marilyn, Louie, Campagnoni, and Merrill.
    Several other witnesses testified about the motive for the
    killings. Graphic Dimensions employees testified that they
    had seen Cruz touring Graphic Dimensions around mid-
    18                   HOOPER V. SHINN
    1980. William Michael Tompkins, a pilot whom Cruz had
    hired on occasion, testified that during the summer of 1980
    he overheard Cruz say that he wanted to take over a printing
    business to launder money and that he was “going to have to
    get rid of” the uncooperative business partner.
    Tompkins also testified that, around December 28, 1980,
    Cruz had asked him to rent a private plane because the same
    two black men who had been in Phoenix in early December
    were coming back to Phoenix and did not want to fly
    commercial. Cruz, however, called Tompkins the next night
    and told him to cancel the plane because the men had decided
    to fly commercial. Bauer testified that on December 31,
    1980, at Cruz’s direction, he purchased two one-way tickets
    from Phoenix to Chicago on the red-eye flight that left at
    2:00 a.m. Bauer testified that he delivered the tickets to
    Merrill’s home at Cruz’s direction. The State’s evidence
    included the two one-way tickets, and an airline
    representative testified that the tickets had been used. This
    corroborated that Hooper and Bracy were in Phoenix on
    New Year’s Eve.
    Telephone records further supported that Hooper and
    Bracy were then in Phoenix, not Chicago. The records
    showed that, on December 31, 1980, two phone calls were
    made from Merrill’s home in Phoenix to Ann Harris’s home
    in Chicago (Harris was the mother of Hooper’s then-
    girlfriend). Other records showed that Bracy made calls
    from his home in Chicago to Cruz’s home in Illinois and the
    Gun Trader in the days before the murders. No calls were
    made from Bracy’s home to Cruz’s Illinois home on the day
    of the murders, but the calls from Bracy’s home to Cruz’s
    Illinois home resumed immediately after. The State argued
    that these telephone records showed that Bracy and Hooper
    were in Phoenix on the day of the murders.
    HOOPER V. SHINN                      19
    The jury learned about evidence from which it could
    infer that Hooper possessed both the murder weapon and the
    knife that was used to slash Redmond’s throat. The bullets
    removed from the victims had been fired from the same
    weapon, which could have been a Colt Trooper .357
    magnum. Kleinfeld testified that he sold three guns to Cruz
    in December 1980, including a .357 Colt Trooper and .22
    Ruger, and that McCall had picked up those two guns at the
    Gun Trader around December 30, 1980, the day before the
    murders. Louie testified that on the day of the murders,
    Hooper was with McCall and had a gun similar to a .357
    magnum.       Kleinfeld also testified that around early
    December 1980, Merrill, Hooper, and Bracy had come to the
    Gun Trader and left with a knife that was the same or very
    similar to the knife found at the crime scene, which had been
    used to cut Redmond’s throat.
    3. Evidence Relating to the Bradfords and Ward
    During the defense’s cross-examination of Detective
    Ronald Quaife, the jury learned that three black men, the
    Bradfords and Ward, had been arrested on the night of the
    murders for traffic, weapon, and drug charges. Detective
    Quaife described Ronald Bradford as slender and having a
    wart above his nose. He stated that Ward had been wearing
    a brown leather or vinyl jacket at the time of his arrest. He
    also testified about the anonymous call made to the Sheriff’s
    Office around 10:05 p.m. while the Bradfords and Ward
    were in custody. Detective Quaife said the caller reported
    that a black male matching the description of Ronald
    Bradford had committed the Redmond crimes. He explained
    that the Bradfords and Ward were ruled out as suspects based
    on the temporal proximity between the murders and their
    arrests.
    20                     HOOPER V. SHINN
    During redirect of Detective Quaife, the prosecutor
    asked about photos that had been taken of Ronald Bradford.
    From this questioning, the defense realized that the
    prosecution had withheld arrest photos of the Bradfords and
    Ward. They then moved for a mistrial. The court denied the
    mistrial motion but granted the defense’s motion to exclude
    Detective Quaife’s testimony about the photos as improper
    redirect exceeding the scope of cross-examination. The
    court then instructed the jury to disregard any reference to
    the photos.
    The next day, the defense learned through Officer
    Michael Midkiff’s testimony that the prosecution may have
    failed to disclose all the police reports on the Bradfords and
    Ward. Hooper moved for a mistrial based on this purported
    failure, and the court conducted a brief hearing. Later that
    day, the court resumed the hearing on the mistrial motion
    based on the alleged undisclosed reports. During the
    hearing, Bracy’s counsel informed the court that he would
    be moving for some of the photos of the Bradfords and Ward
    to be admitted. Presumably, the photos had been provided
    to the defense by this time. The photos included color
    photographs taken from different angles and showed what
    they were wearing when arrested. The court ultimately
    denied the mistrial motion. But as a remedy, it ordered that
    the two detectives who had interviewed the Bradfords and
    Ward be available to the defense for interviews. 4
    About five days later, while the State was still presenting
    its case, the prosecution provided the undisclosed reports on
    4
    We are unable to discern from the record whether the defense
    interviewed these two detectives.
    HOOPER V. SHINN                            21
    the Bradfords and Ward to the defense. 5 The defense was
    provided the undisclosed photos of and reports on the
    Bradfords and Ward at least three weeks before Hooper
    presented his defense.
    The State used the photos during Marilyn’s direct
    examination. Though the photos had not yet been admitted,
    the prosecutor showed Marilyn the photos of the Bradfords
    and Ward, and she testified that she did not see these men on
    New Year’s Eve.
    The photos were later admitted through Hooper’s first
    witness, Detective Quaife. During cross-examination, the
    prosecutor successfully, and without objection, admitted the
    photos. On redirect, the court granted Hooper’s request that
    the photos be published to the jury.
    Hooper also used the undisclosed reports in questioning
    Detective Quaife. During Hooper’s direct examination, the
    jury learned that Detective Quaife had been asked by the
    prosecution during the trial to look for arrest records on the
    Bradfords and Ward and that Detective Quaife had found
    them. Detective Quaife testified that, based on these records,
    he learned that the Bradfords and Ward had been arrested at
    9 p.m. at a location about twenty minutes from the Redmond
    home. The defense drew out other details based on the
    reports, which called into doubt the reasons the police had
    discounted the Bradfords and Ward as suspects for the
    Redmond crimes.
    5
    Before trial, the prosecution had disclosed police reports that
    mentioned some of the circumstances of the arrests of the Bradfords and
    Ward as well as the anonymous call. The undisclosed reports revealed
    more detail about the circumstances of the arrests.
    22                   HOOPER V. SHINN
    The jury also learned more details about the anonymous
    call through the prosecutor’s cross-examination of Detective
    Quaife. The caller said that he had seen the newscast of the
    homicides and that one of the persons involved was at 13th
    Street and Washington. The caller said that the person
    involved was a black male named “Slim” and that Slim had
    a wart on the side of his nose.
    4. Defense Evidence
    The defense put on evidence showing that the State’s
    investigator, Ryan, used improper investigatory tactics and
    engaged in other improper conduct. For example, Kleinfeld
    testified that Ryan had threatened to break his legs if he did
    not tell him what he wanted to know. Wally Roberts, who
    worked with Graphic Dimensions, testified that Ryan had
    given him cash and told him not to cooperate with the
    defense and to lie to the police. The jury also learned that
    Ryan had provided false answers to Campagnoni’s
    presentence report writer to help Campagnoni obtain a
    lighter sentence.
    Hooper and Bracy presented several alibi witnesses.
    Hooper’s witnesses included Mary Jean and Michael
    Wilson, two friends of Hooper’s brother, who testified that
    they had seen and spoken with Hooper on the day of the
    murders at a flea market in Chicago. Nelson Booker, another
    friend of Hooper’s brother, testified that he had seen and
    spoken with Hooper at a New Year’s Eve party at a Chicago
    club.
    5. Closing Arguments and Verdict
    The prosecutor’s closing argument reviewed all the
    evidence. The prosecutor discussed the evidence supporting
    the motive for Redmond’s murder, including the various
    HOOPER V. SHINN                       23
    witnesses who knew about the potential Las Vegas business
    and Tompkins’s testimony that Cruz said one of the business
    partners had to be eliminated. He highlighted Marilyn’s
    testimony about the details of the crimes, her pretrial
    identifications, and her confident in-court identifications of
    Hooper and Bracy as the killers. The prosecutor also
    discussed the testimonies of Merrill, Kleinfeld, Tompkins,
    Bauer, Campagnoni, Louie, and the Long’s Drugstore
    employee. He reminded the jury about the gloves and
    receipts found in McCall’s home and vehicle, the plane
    tickets bought by Bauer, and the telephone records.
    Hooper’s counsel maintained during closing that Hooper
    was in Chicago at the time of the murders. He argued that
    the testimonies of Merrill, Campagnoni, Louie, and Marilyn
    were unreliable. He pointed out that Merrill had to stick to
    his story, which was a lie, because “[i]f he change[d] it now,
    he [could] be tried for first degree murder and sent to death
    row.” Hooper’s counsel also emphasized the information in
    the undisclosed reports, arguing that the officers’ reasons for
    discounting the Bradfords and Ward as suspects were not
    believable and that there was more evidence connecting
    them to the Redmond crimes than there was against Hooper.
    Hooper’s counsel did not focus on the photos. The
    prosecution, however, specifically asked the jury to compare
    the photos to Marilyn’s descriptions of the intruders.
    Bracy’s counsel did not mention the Bradfords or Ward in
    his closing statement.
    The jury deliberated for three days and found both
    defendants guilty as charged on all eleven counts, including
    the two first-degree murder counts.
    24                          HOOPER V. SHINN
    D. Sentencing
    Hooper’s prior convictions were relevant for sentencing
    purposes, and on January 6, 1983, the court held a hearing as
    to those convictions. Hooper’s trial counsel, Grant Woods,
    was not present, and Allen Gerhardt, another public
    defender, appeared instead. The State presented evidence
    that Hooper had been convicted on September 23, 1981, in
    Illinois, on three counts of first-degree murder, three counts
    of armed robbery, and three counts of aggravated
    kidnapping, and the court so found later during Hooper’s
    sentencing.
    Before the hearing on aggravating and mitigating
    circumstances under Arizona’s death statute, A.R.S. § 13-
    703 (1982), 6 the prosecutor notified Hooper’s counsel that
    the State intended to call one Phoenix officer and two
    Chicago officers to testify at the aggravation and mitigation
    hearing. The prosecutor stated that the officers would testify
    about these statements made by Hooper: “They (the people
    in Phoenix) thought Bracy was high-class, and me a low-
    class dog. But those people in Phoenix weren’t that sharp,
    they gave me $10,000 for killing Redmond and his family
    and I would have done it for a couple hundred dollars a
    person”; “I can’t handle myself out of the pen, can’t even get
    a driver’s license, most of the time I’m just drunk. I’m better
    off dead or in the pen because if I got out again I would
    6
    All citations to A.R.S. § 13-703 refer to the version in effect in
    1982.
    HOOPER V. SHINN                               25
    probably just kill someone again”; and “I like to shoot
    people, it doesn’t bother me a bit.” 7
    On February 4, 1983, the court conducted the
    aggravation and mitigation hearing.            Gerhardt also
    represented Hooper at this hearing. The parties received
    copies of Hooper’s presentence report (“PSR”) on the day of
    the hearing, and before the start of the hearing, the court
    granted a recess to allow counsel to review the PSR. The
    PSR showed that Hooper, born in 1945, had a long adult
    criminal history, starting when he was eighteen. Hooper
    started out with a disorderly conduct conviction in 1963 and
    then progressed to robbery and armed robbery convictions.
    In 1969, he was charged with murder but pleaded guilty to
    manslaughter. In 1977, he was convicted of attempted
    murder. As noted, Hooper was convicted in Illinois in 1981
    of three counts of first-degree murder, three counts of armed
    robbery, and three counts of aggravated kidnapping, for
    crimes committed in November 1980.
    The prosecutor asked the court to find the existence of
    aggravators based on the evidence in the record and
    Hooper’s 1981 Illinois convictions. The prosecutor did not
    bring up the details of Hooper’s other criminal convictions
    or his admissions, but the court was aware of this
    information because it was in the PSR and in the
    supplemental PSR.        Hooper’s counsel presented no
    evidence.
    7
    As far as we can tell from the record, the State did not present these
    admissions at trial because it agreed not to use them after Hooper moved
    for their suppression. These admissions were disclosed to the trial judge
    in a supplemental presentence report after the aggravation and mitigation
    hearing but before sentencing.
    26                    HOOPER V. SHINN
    Woods and Gerhardt appeared at Hooper’s sentencing on
    February 11, 1983. Woods pleaded for mercy, urging the
    judge that he should not “order a murder” and that a death
    sentence was unnecessary because Hooper had already been
    sentenced to death by an Illinois state court.
    The court sentenced Hooper to life imprisonment on
    Count One, and multiple consecutive sentences of thirty-five
    years for Counts Four through Eleven. As to Counts Two
    and Three for the first-degree murders of Redmond and
    Phelps, the court determined that the State had established
    five of the seven statutory aggravating factors under
    Arizona’s death statute:
    (1) Hooper had a prior conviction for which a life
    sentence or death was imposable under Arizona law.
    See A.R.S. § 13-703(F)(1). The court found that
    Hooper’s three first-degree murder 1981 convictions
    in Illinois satisfied this factor.
    (2) Hooper had a prior felony conviction involving the
    use or threat of violence on another person. See
    A.R.S. § 13-703(F)(2).     The court found that
    Hooper’s three armed robbery and three aggravated
    kidnapping 1981 convictions in Illinois satisfied this
    factor.
    (3) Hooper knowingly created a grave risk of death to
    people other than the victims in the instant offense.
    See A.R.S. § 13-703(F)(3). The court found this
    factor established by the fact that Marilyn had been
    placed in a position of grave risk of death given the
    manner in which the crimes had been committed.
    (4) Hooper committed the offense in expectation of
    receiving something of pecuniary value. See A.R.S.
    HOOPER V. SHINN                              27
    § 13-703(F)(5).    The court found this factor
    established by the fact that Hooper and his
    coconspirators were to receive money, or did receive
    money, for the contract killing of Redmond.
    (5) Hooper committed the offenses in an especially
    heinous, cruel, or depraved manner. See A.R.S.
    § 13-703(F)(6).      The court found this factor
    established given the manner in which the crimes had
    been committed. Redmond was “shot twice in the
    head at close range after having been bound and
    gagged,” and, after the shots were fired, his “throat
    was cut from ear to ear with a large butcher-type
    knife.” Phelps was “bound, gagged, [laid] across the
    bed and shot at close range with a high caliber
    pistol,” and she “did not die from the first wound and
    was shot a second time.”
    The court noted that Hooper presented no mitigating
    evidence and determined that Hooper had failed to establish
    the existence of any of the statutory mitigating factors. The
    court concluded, “Based upon the findings of those five
    aggravating circumstances, and the fact that there are no
    mitigating circumstances sufficiently substantial to call for
    leniency; as to Counts II and III, it is ordered that [Hooper
    is] sentenced to die . . . .” 8
    8
    At the time of Hooper’s sentencing, Arizona law required the trial
    judge (rather than a jury) to determine the existence of aggravating
    circumstances. See A.R.S. § 13-703(B). The Supreme Court later held
    that this process is unconstitutional in Ring v. Arizona, 
    536 U.S. 584
    , 609
    (2002). But Ring does not apply retroactively. Schriro v. Summerlin,
    
    542 U.S. 348
    , 358 (2004).
    28                   HOOPER V. SHINN
    E. Procedural History
    1. Direct Appeal
    On June 10, 1985, the Arizona Supreme Court affirmed
    Hooper’s convictions and sentence. State v. Hooper, 
    703 P.2d 482
     (Ariz. 1985) (en banc). We discuss the relevant
    portions of the decision—those concerning the alleged
    Brady violations and Hooper’s death sentence.
    The Arizona Supreme Court analyzed five alleged Brady
    violations.     
    Id. at 494
     (explaining that Hooper’s
    constitutional arguments were addressed in the companion
    decision in State v. Bracy, 
    703 P.2d 464
     (Ariz. 1985) (en
    banc), decided the same day). Three of those alleged
    violations are at issue: (1) the delayed disclosure of the
    photos of the Bradfords and Ward; (2) the delayed disclosure
    of the police reports on the Bradfords and Ward; and
    (3) undisclosed benefits that the State and Ryan provided to
    Merrill and his wife. Bracy, 703 P.2d at 471.
    As for the photos, the Arizona Supreme Court found that
    defense counsel objected to their admission, and the trial
    court excluded them and instructed the jury to disregard
    them. Id. at 472. Given those facts, the Arizona Supreme
    Court concluded that “either [the] photographs were not
    exculpatory or defense counsel did not want them in
    evidence for some other reason” and “defendant did not
    suffer prejudice from the nondisclosure of this evidence.”
    Id.
    The Arizona Supreme Court found that the police reports
    were disclosed “during trial and defendant made use of
    [them].” Id. Given this, the court determined that there was
    no Brady violation as to the police reports. Id.
    HOOPER V. SHINN                      29
    The defense had been informed prior to trial of certain
    benefits the State and Ryan provided to Merrill. Other such
    benefits came to light only after trial. Id. at 471. These
    undisclosed benefits were:
    1) Prior to trial, Dan Ryan, county attorney
    investigator, made car payments for Arnold
    Merrill’s wife, Cathy Merrill, totaling over
    $800.00 for which Ryan received only partial
    reimbursement;
    2) Mrs. Merrill also received approximately
    $3,000 from the Maricopa County Attorney’s
    Protected Witness Program; [and]
    3) Arnold Merrill made approximately
    twenty-two long distance phone calls from
    the county attorney’s office, some of which
    were with Dan Ryan’s knowledge, others of
    which Merrill made while left unattended in
    Ryan’s custody, and none of which he paid
    for.
    Id. For convenience, we refer to these benefits discovered
    after trial as the “Merrill benefits.”
    Applying Brady, the Arizona Supreme Court determined
    that the Merrill benefits were favorable to Hooper and had
    been suppressed.      Id. at 472.     In analyzing Brady
    “materiality,” the court determined that the Merrill benefits
    had been specifically requested by the defense. Id. Thus,
    under United States v. Agurs, 
    427 U.S. 97
     (1976), the
    evidence fell within the category of undisclosed evidence
    that had been specifically requested by the defense, and
    materiality turned on “whether the suppressed evidence
    30                    HOOPER V. SHINN
    might have affected the outcome of the trial.”          Bracy,
    
    703 P.2d at
    472 (citing Agurs, 
    427 U.S. 97
    ).
    Applying that standard, the Arizona Supreme Court
    found that the Merrill benefits were not material for two
    reasons. First, the evidence was “merely cumulative” of the
    “wealth of impeaching evidence against Arnold Merrill.” Id.
    at 473. “Such evidence included Merrill’s plea bargain with
    the state; his extensive drug use; his past participation in
    arson, burglary, kidnapping, and robbery; his past lies to
    police officers; and his private out-of-jail visit with his wife
    while being incarcerated for first degree murder.” Id. Given
    this “wealth of impeaching evidence,” the Arizona Supreme
    Court reasoned that it did “not believe the disclosure of
    benefits equaling several thousand dollars would have had
    any effect upon the outcome of the trial.” Id.
    Second, the court considered the Merrill benefits in light
    of the other evidence produced at trial and determined that
    the evidence would not have affected the outcome. Id. The
    court noted that Marilyn gave “strong eyewitness testimony”
    and that the Merrill benefits, which could have been used to
    impeach Merrill and Ryan, “had no effect upon [Marilyn’s]
    key testimony.” Id. Additionally, Merrill’s testimony was
    “not pivotal,” as several other witnesses “showed
    defendant’s presence in Phoenix in early and late December,
    his connection to Robert Cruz, and his participation in
    Cruz’s conspiracy to kill Pat Redmond.” Id.
    The Arizona Supreme Court found no Brady violation:
    “[W]e do not believe that three additional pieces of
    impeaching information regarding Arnold Merrill might
    have affected the jury’s belief in Mrs. Redmond and the
    other evidence. Nor would it have had any effect on
    whatever opinion the jury had of Merrill’s credibility.” Id.
    HOOPER V. SHINN                      31
    Regarding Hooper’s death sentence, the court
    independently reviewed the record and vacated one
    aggravating circumstance found by the sentencing court—
    that Hooper created a grave risk of death to Marilyn under
    A.R.S. § 13-703(F)(3)—and upheld the remaining four
    aggravating circumstances. Hooper, 
    703 P.2d at
    494–95;
    see also Bracy, 
    703 P.2d at 481
    . The Arizona Supreme
    Court then determined that there were no mitigating
    circumstances and concluded that Hooper’s death sentence
    was proper. Hooper, 
    703 P.2d at 495
    .
    2. State Habeas Petitions
    From 1986 through 2017, Hooper filed five state post-
    conviction petitions.     The Arizona Supreme Court
    summarily denied the first four petitions and, as of the time
    Hooper filed his replacement opening brief in our court, the
    fifth remained pending. We discuss his state petitions
    relevant to this appeal.
    Philip Seplow was appointed to represent Hooper in his
    first state petition, filed in 1986. Seplow also represented
    Hooper in his second state petition, filed in 1992. In this
    second proceeding, Seplow alleged that he had been
    ineffective for failing to raise an ineffective assistance of
    counsel claim in Hooper’s first post-conviction proceeding
    based on trial counsel’s (Woods) failure to present
    mitigation evidence at sentencing. The post-conviction
    court denied the second petition and determined that
    Hooper’s ineffective assistance of sentencing counsel claim
    was procedurally barred. The Arizona Supreme Court
    summarily denied Hooper’s petition for review.
    In his fourth petition, filed in 1999, Hooper argued that
    his death sentence was unconstitutional because it was based
    in part on his 1981 Illinois convictions, which were likely
    32                    HOOPER V. SHINN
    invalid. On October 19, 2005, the post-conviction court
    rejected this argument because, at the time, the Illinois
    convictions remained valid.      Alternatively, the post-
    conviction court found that, even assuming the Illinois
    convictions were invalid, Arizona law required a death
    sentence because there were still two valid aggravating
    circumstances and no mitigating circumstances.
    Hooper petitioned the Arizona Supreme Court for
    review, arguing that a death sentence based on invalid
    convictions violates the Eighth Amendment. Though
    Hooper’s petition mentioned the Fourteenth Amendment, he
    did not raise a due process argument based on his Illinois
    convictions. And when Hooper supplemented his petition
    by providing the Arizona Supreme Court with a citation to
    Brown v. Sanders, 
    546 U.S. 212
     (2006), he still did not allege
    a due process violation. On April 20, 2006, the Arizona
    Supreme Court summarily denied his petition.
    3. Federal Habeas Petition
    In 1998, Hooper filed the federal habeas petition that led
    to this appeal. His supplemental petition included a claim
    that his death sentence violated the Eighth and Fourteenth
    Amendments because it was based on the likely invalid
    Illinois convictions. The district court found that this claim
    was unexhausted, ordered Hooper to withdraw it, and
    entered a stay pending exhaustion of the claim. After
    waiting more than five years, the district court vacated the
    stay but determined that Hooper could move for leave to
    amend his habeas petition once he exhausted his claim in
    state court.
    In 2006, having purportedly exhausted that claim,
    Hooper sought leave to amend his petition to add it. The
    district court denied Hooper’s motion to amend, finding that
    HOOPER V. SHINN                        33
    the claim was meritless and thus amendment would be futile.
    The district court also denied Hooper’s claim that his trial
    counsel had provided ineffective assistance at sentencing by
    failing to investigate and present mitigation evidence. The
    district court determined that the claim was procedurally
    defaulted because Hooper had failed to present it in his first
    state post-conviction petition.
    The district court ultimately denied Hooper’s petition in
    2008. In its order denying the petition, the district court
    analyzed thirteen alleged Brady violations, including, as
    relevant here, the delayed disclosures of the photos and
    police reports and the nondisclosure of the Merrill benefits.
    In analyzing the Arizona Supreme Court’s decision on the
    Brady claims, the district court determined the clearly
    established law for purposes of the Antiterrorism and
    Effective Death Penalty Act of 1996 (AEDPA) was Brady,
    Agurs, and United States v. Bagley, 
    473 U.S. 667
     (1985).
    Applying that clearly established law, the district court
    found that the Arizona Supreme Court’s denial of the Brady
    claims based on the photos was not objectively unreasonable
    because the photos were not admitted at trial. It also found
    that the Arizona Supreme Court’s decision regarding the
    police reports was not objectively unreasonable because
    Hooper used the reports during trial. The district court
    determined that the Arizona Supreme Court’s decision that
    the Merrill benefits were immaterial was not contrary to or
    an unreasonable application of Supreme Court precedent.
    The district court granted a certificate of appealability on the
    Brady claims, and Hooper timely appealed.
    In 2012, Hooper moved to stay the appeal and remand
    the case pursuant to Martinez v. Ryan, 
    566 U.S. 1
     (2012).
    He also requested a remand for the district court to
    reconsider its denial of leave to amend. A motions panel of
    34                        HOOPER V. SHINN
    this court granted both requests. In part, the panel believed
    remand appropriate because, while his case was pending on
    appeal, the United States District Court for the Northern
    District of Illinois had granted habeas relief to Hooper and
    vacated his 1981 Illinois convictions. 9
    On remand, the district court again denied relief on the
    two remanded issues. It denied the ineffective assistance of
    sentencing counsel claim as procedurally barred, as Hooper
    failed to demonstrate “cause” under Martinez to excuse the
    procedural default. The court again denied Hooper’s request
    to amend the petition to include the Eighth and Fourteenth
    Amendment claim because it was meritless and therefore
    any amendment would be futile. Finally, the district court
    granted Hooper’s request to expand the record with the
    materials attached to his supplemental briefs submitted on
    remand, denied his requests for discovery and an evidentiary
    9
    In 2013, the Seventh Circuit vacated the Illinois district court’s
    denial of Hooper’s habeas petition. Hooper v. Ryan, 
    729 F.3d 782
    , 787
    (7th Cir. 2013). The court determined that the Illinois Supreme Court
    had unreasonably applied Batson v. Kentucky, 
    476 U.S. 79
     (1986).
    729 F.3d at 787. The court remanded the case to the district court for an
    evidentiary hearing and an independent Batson determination as to what
    had occurred at the trial, thirty-two years before. Id.
    On remand, the prosecution declined an evidentiary hearing, and so
    the district court granted the writ and vacated the Illinois convictions and
    life sentences (the Governor of Illinois had commuted all Illinois death
    sentences, including Hooper’s). Final Judgment, Hooper v. Ryan, No.
    10-CV-01809 (N.D. Ill. Dec. 16, 2013), ECF. No. 81; see also People ex
    rel. Madigan v. Snyder, 
    804 N.E.2d 546
    , 550, 560 (Ill. 2004) (denying
    writ of mandamus challenging then-Governor’s grant of blanket
    clemency to over 160 inmates who had been sentenced to death). Illinois
    has not retried Hooper.
    HOOPER V. SHINN                       35
    hearing, and granted a certificate of appealability on both
    remanded issues.
    Hooper filed a timely amended notice of appeal.
    II. STANDARD OF REVIEW
    We review the district court’s denial of a habeas petition
    de novo. Reis-Campos v. Biter, 
    832 F.3d 968
    , 973 (9th Cir.
    2016). This case is governed by AEDPA. See Lambert v.
    Blodgett, 
    393 F.3d 943
    , 965 (9th Cir. 2004). Thus, we may
    not grant habeas relief with respect to any claim adjudicated
    on the merits in state court unless the state court’s decision
    was “contrary to, or involved an unreasonable application of,
    clearly established Federal law, as determined by the
    Supreme Court of the United States,” 
    28 U.S.C. § 2254
    (d)(1), or “based on an unreasonable determination of
    the facts in light of the evidence presented in the State court
    proceeding,” 
    id.
     § 2254(d)(2).
    A state-court decision is contrary to Supreme Court
    precedent if “the state court arrives at a conclusion opposite
    to that reached by th[e Supreme] Court on a question of law”
    or “the state court confronts facts that are materially
    indistinguishable from a relevant Supreme Court precedent
    and arrives at a result opposite to [the Supreme Court’s].”
    Williams v. Taylor, 
    529 U.S. 362
    , 405 (2000). “A decision
    involves an ‘unreasonable application’ of clearly established
    federal law under § 2254(d)(1) if it ‘identifies the correct
    governing legal principle . . . but unreasonably applies that
    principle to the facts of the prisoner’s case.’” Vega v. Ryan,
    
    757 F.3d 960
    , 965 (9th Cir. 2014) (per curiam) (alteration in
    original) (quoting Williams, 
    529 U.S. at 413
    ). “The
    ‘unreasonable application’ clause requires the state court
    decision to be more than incorrect or erroneous. The state
    court’s application of clearly established law must be
    36                    HOOPER V. SHINN
    objectively unreasonable.” Lockyer v. Andrade, 
    538 U.S. 63
    , 75 (2003) (citation omitted).
    “[C]learly established Federal law” under AEDPA
    includes only the Court’s decisions as of the time of the
    relevant state-court adjudication on the merits. See Greene
    v. Fisher, 
    565 U.S. 34
    , 38 (2011). “If no Supreme Court
    precedent creates clearly established federal law relating to
    the legal issue the habeas petitioner raised in state court, the
    state court’s decision cannot be contrary to or an
    unreasonable application of clearly established federal law.”
    Brewer v. Hall, 
    378 F.3d 952
    , 955 (9th Cir. 2004).
    Moreover, “[w]hen a state court has applied clearly
    established federal law to reasonably determined facts in the
    process of adjudicating a claim on the merits, a federal
    habeas court may not disturb the state court’s decision unless
    its error lies ‘beyond any possibility for fairminded
    disagreement.’” Shinn v. Kayer, 592 U.S. ----, 
    2020 WL 7327827
    , at *1 (2020) (per curiam) (quoting Harrington v.
    Richter, 
    562 U.S. 86
    , 103 (2011)).
    Under § 2254(d)(2), “a state-court factual determination
    is not unreasonable merely because the federal habeas court
    would have reached a different conclusion in the first
    instance.” Wood v. Allen, 
    558 U.S. 290
    , 301 (2010).
    When a district court denies leave to amend based on a
    determination that the proposed claim would be futile, we
    review the determination of futility de novo. Murray v.
    Schriro, 
    745 F.3d 984
    , 1015 (9th Cir. 2014). We also review
    de novo a district court’s procedural default determinations.
    Runningeagle v. Ryan, 
    825 F.3d 970
    , 978 (9th Cir. 2016).
    HOOPER V. SHINN                             37
    III. DISCUSSION
    We first address the three certified issues: (1) whether
    nondisclosure of the Merrill benefits and delayed disclosures
    of the photos and reports violated Hooper’s due process
    rights under Brady 10; (2) whether the district court erred in
    denying him leave to amend his petition to add a claim that
    his death sentence violates the Eighth and Fourteenth
    Amendments because his sentence was based in part on
    invalid Illinois convictions; and (3) whether Martinez
    excuses the procedural default of his ineffective assistance
    of sentencing counsel claim. We then address the two
    uncertified issues:          (1) whether Hooper was
    unconstitutionally shackled at trial; and (2) whether the
    unconstitutional shackling caused him to involuntarily
    waive his right to be present at voir dire because it forced
    him to choose between two constitutional rights. We
    construe Hooper’s briefing on these uncertified issues as a
    request to expand the certificate of appealability (COA). See
    Ninth Circuit Rule 22-1(e).
    A. Brady Claims
    The last state-court adjudication on the merits of
    Hooper’s Brady claims is the Arizona Supreme Court’s
    10
    Although Hooper alleged thirteen Brady violations in the district
    court, he discusses only the photos, police reports, and Merrill benefits
    in his briefs. And he fails to present any argument that any alleged
    nondisclosures, other than those three, were material under Brady. The
    State argues in its answering brief that Hooper abandoned all of his
    Brady claims other than the three he discusses in his opening brief, and
    Hooper does not dispute this argument in his reply brief. Accordingly,
    Hooper has preserved only the Brady claims as to the photos, police
    reports, and Merrill benefits. See Petrocelli v. Angelone, 
    248 F.3d 877
    ,
    880 n.1 (9th Cir. 2001) (holding that a petitioner in a capital case
    abandoned several claims for lack of argument supporting the claims).
    38                       HOOPER V. SHINN
    decision on direct appeal. See Hooper, 
    703 P.2d at 494
    ; see
    also Bracy, 
    703 P.2d at
    471–74. The decision was issued on
    June 10, 1985, and thus clearly established law includes only
    the Supreme Court decisions issued by that date. See
    Greene, 
    565 U.S. at 38
    . Because Bagley, 
    473 U.S. 667
    , was
    issued on July 2, 1985, it was not clearly established. 11 Thus,
    the district court erred in relying on Bagley. 12
    The clearly established law at the time of the Arizona
    Supreme Court’s decision was Brady, 
    373 U.S. 83
     (1963),
    and Agurs, 
    427 U.S. 97
     (1976). Brady established the three
    elements of a due process violation based on the suppression
    of evidence: (1) the evidence is favorable to the accused,
    (2) the prosecution suppressed the evidence, and (3) the
    evidence is “material.” 
    373 U.S. at 87
    . In Agurs, the Court
    differentiated between three nondisclosure situations to
    which Brady applies: (1) where the undisclosed evidence
    shows “that the prosecution’s case includes perjured
    testimony and that the prosecution knew, or should have
    known, of the perjury,” 
    427 U.S. at 103
    , (2) where the
    defense makes a specific request, and the prosecutor fails to
    provide responsive evidence, 
    id. at 104
    , and (3) where the
    defense makes a general request or no request, and the
    prosecutor suppresses favorable evidence, 
    id.
     at 106–07.
    11
    The State appears to concede that Bagley was clearly established.
    We reject this concession because parties cannot waive § 2254(d)’s
    standard of review. Amado v. Gonzalez, 
    758 F.3d 1119
    , 1133 n.9 (9th
    Cir. 2014) (“[The court has] the obligation to apply the correct [AEDPA]
    standard, for the issue is non-waivable.”).
    12
    We note that the district court did not have the benefit of Greene
    v. Fisher, 
    565 U.S. 34
     (2011), when it identified the applicable clearly
    established law.
    HOOPER V. SHINN                             39
    Hooper’s claims fall within situation (2), “specific request”
    cases.
    Agurs established different materiality standards for
    situations (1) and (3). Agurs did not set forth a materiality
    standard for situation (2), but the Court did explain that
    “material” means that “the suppressed evidence might have
    affected the outcome of the trial.” 
    Id. at 104
    . 13 Thus, even
    though the Supreme Court had not announced a precise
    materiality standard for “specific request” cases at the time
    of the Arizona Supreme Court’s decision, Brady and Agurs
    had established governing legal principles that apply in such
    cases—a defendant must show that the evidence was
    suppressed, favorable, and material, meaning the evidence
    might have affected the outcome of the trial. See Brady,
    
    373 U.S. at 87
    ; Agurs, 
    427 U.S. at 104
    . These legal
    principles are the applicable clearly established law for
    AEDPA purposes here. See Lockyer, 
    538 U.S. at
    71–72
    (“‘[C]learly established Federal law’ under § 2254(d)(1) is
    the governing legal principle or principles set forth by the
    Supreme Court at the time the state court renders its
    decision.”). 14
    13
    The Supreme Court later clarified in Bagley that Agurs did not
    establish a materiality standard for “specific request” cases. Bagley,
    
    473 U.S. at 681
    . Rather, the Court explained that its statement in Agurs
    that “Brady indicates that implicit in the requirement of materiality is a
    concern that the suppressed evidence might have affected the outcome
    of the trial,” was merely an explanation of the “meaning of the term
    ‘materiality.’” 
    Id.
     at 681 n.12 (citation omitted).
    14
    Hooper identifies no Supreme Court precedent in existence at the
    time of the Arizona Supreme Court’s decision that established a more
    favorable materiality standard for “specific request” cases than the
    materiality principle in Agurs, nor are we aware of any. Thus, even if
    we are somehow incorrect in our determination that there was clearly
    40                        HOOPER V. SHINN
    1. AEDPA Analysis Regarding Merrill Benefits
    The Arizona Supreme Court’s decision on the Brady
    claim regarding the Merrill benefits was not an unreasonable
    application of clearly established law under § 2254(d)(1).
    The court identified the correct governing legal principles in
    Brady and Agurs. See Bracy, 
    703 P.2d at 472
    . The Arizona
    Supreme Court reviewed the trial evidence and determined
    that Merrill’s testimony was “not pivotal.” 15 
    Id. at 473
    .
    Rather, it determined that Marilyn’s testimony was crucial.
    
    Id.
     The Arizona Supreme Court noted that her testimony
    was “particularly strong,” and it found that evidence other
    than Merrill’s testimony “showed defendant’s presence in
    Phoenix in early and late December, his connection to
    Robert Cruz, and his participation in Cruz’s conspiracy to
    kill Pat Redmond.” 
    Id.
     The court also determined that the
    Merrill benefits would not have affected the jury’s view of
    Merrill’s credibility because the “defense possessed and
    used a wealth of impeaching evidence against” him. 
    Id.
     The
    court ultimately concluded that Hooper failed to meet
    Agurs’s materiality standard, stating that “we do not believe
    that three additional pieces of impeaching information
    established federal law on this issue in June 1985, our error could inure
    only to Hooper’s benefit; as without such clearly established federal law,
    the Arizona Supreme Court could not have unreasonably applied it, and
    Hooper would automatically lose on this issue under AEDPA. See
    Brewer, 
    378 F.3d at 954
     (affirming the denial of a habeas petition under
    AEDPA for lack of clearly established Supreme Court precedent).
    15
    During his closing, the prosecutor mentioned Merrill’s testimony
    in reviewing all of the evidence, but he did not highlight it. This supports
    that Merrill’s testimony was not crucial. See Barker v. Fleming,
    
    423 F.3d 1085
    , 1100 (9th Cir. 2005) (“A useful measurement of the
    importance of [a witness] and the materiality of the withheld
    impeachment evidence is the lack of emphasis the prosecutor placed on
    his testimony.”).
    HOOPER V. SHINN                       41
    regarding Arnold Merrill might have affected the jury’s
    belief in Mrs. Redmond and the other evidence.” 
    Id.
    The Arizona Supreme Court properly found that
    Marilyn’s testimony was key. Marilyn was an eyewitness to
    the crimes and was certain in her trial identifications of
    Hooper and Bracy. She had also identified both in pretrial
    lineups. As the court noted: “This evidence was particularly
    strong because Mrs. Redmond had ample opportunity to
    view all three men in her home.” 
    Id.
     The court also properly
    found that Merrill’s testimony was “merely corroborative
    and not pivotal.” 
    Id.
     As the court found, the State’s case
    was supported by evidence well beyond Merrill’s testimony.
    In addition to Marilyn’s testimony, the testimonies of Louie,
    Campagnoni, Bauer, and Tompkins, along with the State’s
    other evidence discussed above, all supported Hooper’s
    guilt.
    We find reasonable the Arizona Supreme Court’s
    determination that the Merrill benefits would not have
    affected the jury’s view of Merrill’s credibility. Merrill was
    vigorously impeached. The jury knew that Merrill was a
    known liar, self-interested criminal, and drug dealer and
    user. The jury also knew that he had lied to the police and
    had strong motives to lie, including to avoid a potential death
    sentence.
    Given the overwhelming evidence of Hooper’s guilt
    presented at trial, and the improbability that the Merrill
    benefits would have affected the jury’s view of Merrill, the
    Arizona Supreme Court reasonably concluded that Hooper
    failed to show that the Merrill benefits “might have affected
    the outcome of the trial.” Agurs, 
    427 U.S. at 104
    . Thus, the
    Arizona Supreme Court did not unreasonably apply clearly
    established law, and we are barred from reviewing Hooper’s
    claim based on the Merrill benefits under § 2254(d)(1).
    42                        HOOPER V. SHINN
    Alternatively, Hooper argues that we can review his
    claim on the Merrill benefits under § 2254(d)(2) because the
    Arizona Supreme Court’s finding that the Merrill benefits
    were cumulative impeachment evidence was an
    unreasonable factual determination. 16 A finding that
    evidence is cumulative is a factual determination subject to
    § 2254(d)(2). See Vega, 757 F.3d at 974 (“We further
    conclude that the state court’s findings that Father Dan’s
    testimony would have been cumulative and would have had
    no effect on the verdict is an unreasonable determination of
    the facts in light of the evidence presented in the state court
    proceedings.”).
    The Arizona Supreme Court’s determination that the
    Merrill benefits were cumulative impeachment evidence
    was not unreasonable. As discussed above, the defense
    severely impeached Merrill. The evidence portrayed him as
    a serial liar with strong incentives to fabricate his testimony
    against Hooper and Bracy to avoid a potential death sentence
    for his own involvement in the Redmond crimes and to
    continue to receive favorable treatment from the State. The
    undisclosed Merrill benefits would have shown that Merrill
    received monetary benefits from the State and Ryan, making
    it more likely that he was biased and motivated to lie. But
    considering the impeachment evidence that was presented, it
    was already firmly established that Merrill was biased and
    motivated to lie. Thus, the Arizona Supreme Court’s
    determination was reasonable.
    16
    Although Hooper failed to raise this argument in the district court,
    we address it because the State responds to the argument and does not
    assert waiver. See United States v. Doe, 
    53 F.3d 1081
    , 1082–83 (9th Cir.
    1995) (reviewing the merits of a claim when the government failed to
    assert waiver).
    HOOPER V. SHINN                       43
    Our conclusion is supported by Ninth Circuit cases in
    which we determined that undisclosed impeachment
    evidence was cumulative under similar circumstances. For
    example, in Gentry v. Sinclair, 
    705 F.3d 884
     (9th Cir. 2013),
    the prosecution suppressed evidence that the state had
    intervened with the parole board to secure a witness’s parole.
    
    Id.
     at 902–03. We held that this impeachment evidence
    against the witness was cumulative because the witness had
    been substantially impeached at trial through evidence of his
    “many past crimes, including his conviction for perjury,”
    and “his extensive history of using false names.” 
    Id. at 903
    ;
    see also 
    id. at 904
    ; see also Barker v. Fleming, 
    423 F.3d 1085
    , 1096–97 (9th Cir. 2005) (holding that suppressed
    convictions were cumulative impeachment evidence in light
    of other evidence showing that the witness had a “penchant
    for lying,” had been in and out of jail several times, and had
    made a deal with the state on three other crimes).
    In sum, AEDPA bars our review of Hooper’s Brady
    claim as to the undisclosed Merrill benefits. But as
    discussed below, even if we were to review Hooper’s Brady
    claim on the Merrill benefits de novo, it would fail because
    there is no reasonable probability that the trial outcome
    would have been different had the evidence been disclosed.
    2. AEDPA Analysis Regarding Police Reports
    Hooper argues that we may review the Arizona Supreme
    Court’s decision on the delayed disclosure of the police
    reports related to the Bradfords and Ward because the
    Arizona Supreme Court unreasonably applied clearly
    established law under § 2254(d)(1). Hooper cites Brady and
    Giglio v. United States, 
    405 U.S. 150
     (1972), as the
    applicable clearly established law. But those cases did not
    clearly establish that a delayed disclosure is a Brady
    44                       HOOPER V. SHINN
    violation where the defense had the opportunity to use the
    evidence at trial. Nor has any Supreme Court case so held.
    Because there was no clearly established law governing
    Brady claims based on such delayed disclosures, the Arizona
    Supreme Court’s decision “cannot be contrary to or an
    unreasonable application of clearly established federal law.”
    Brewer, 
    378 F.3d at 955
    . AEDPA therefore prevents us
    from reviewing the Arizona Supreme Court’s decision on the
    police reports.
    3. AEDPA Analysis Regarding Photos
    Like the police reports, the prosecution disclosed the
    photos to Hooper during trial, and he used them at trial.
    Thus, Hooper’s argument that the Arizona Supreme Court’s
    decision on the photos was an unreasonable application of
    clearly established law fails for the same reason his
    argument on the police reports fails—there was no clearly
    established law holding that a delayed disclosure is a Brady
    violation where the defense had the opportunity to use the
    evidence at trial.
    Hooper also asserts, however, that we may review the
    Arizona Supreme Court’s decision on the photos because its
    decision was based on the unreasonable factual
    determination that no photos had been admitted at trial. 17 In
    analyzing the suppression of the photos, the Arizona
    Supreme Court focused on the specific incident during trial
    when defense counsel objected to Detective Quaife’s
    testimony about the photos on redirect. See Bracy, 
    703 P.2d 17
    Hooper did not raise this argument in the district court. Even so,
    we consider it because the State fails to assert waiver. See Doe, 
    53 F.3d at
    1082–83.
    HOOPER V. SHINN                            45
    at 472. This incident occurred before the photos had been
    admitted.
    Because we are unable to determine from the record the
    specific argument that was made to the Arizona Supreme
    Court with respect to the photos, it is unclear whether the
    court’s reasoning was based on an unreasonable factual
    determination. We therefore assume, without deciding, that
    the Arizona Supreme Court’s decision on the photos was
    based on an unreasonable factual determination. This
    assumption does not change the outcome on the Brady
    claims because, as discussed below, Hooper’s claims fail
    even on de novo review.
    4. De Novo Review of Brady Claims
    Hooper argues that we may review all of his Brady
    claims de novo, and that he is entitled to relief under de novo
    review. We disagree because we have concluded above that
    AEDPA bars our review of the police reports and the Merrill
    benefits. But as we next discuss, even assuming we could
    review all of his Brady claims de novo, they would fail.
    Hooper satisfies two of the three Brady elements—the
    evidence was favorable and (at least partially) suppressed.
    See 
    373 U.S. at 87
    . Thus, his Brady claims turn on the
    prejudicial effect or materiality of the photos, police reports,
    and Merrill benefits. 18
    “[E]vidence is material only if there is a reasonable
    probability that, had the evidence been disclosed to the
    defense, the result of the proceeding would have been
    18
    “[F]or Brady purposes, [‘prejudicial’ and ‘material’] have come
    to have the same meaning.” Benn v. Lambert, 
    283 F.3d 1040
    , 1053 n.9
    (9th Cir. 2002).
    46                   HOOPER V. SHINN
    different. A ‘reasonable probability’ is a probability
    sufficient to undermine confidence in the outcome.” Bagley,
    
    473 U.S. at 682
    . We “must examine the trial record, evaluate
    the withheld evidence in the context of the entire record, and
    determine in light of that examination whether there is a
    reasonable probability that, had the evidence been disclosed,
    the result of the proceeding would have been different.”
    Turner v. United States, 
    137 S. Ct. 1885
    , 1893 (2017)
    (quotation marks, alterations, and citations omitted). A
    Brady violation occurs when the undisclosed favorable
    evidence “could reasonably be taken to put the whole case
    in such a different light as to undermine confidence in the
    verdict.” Kyles v. Whitley, 
    514 U.S. 419
    , 435 (1995).
    “[M]ateriality of the withheld evidence [must] be
    analyzed cumulatively . . . .” Barker, 
    423 F.3d at 1094
    . We
    first examine the “force and nature of the withheld evidence
    item by item,” and then “we consider the cumulative effect
    of the suppressed evidence.” 
    Id. at 1099
    . “Gauging the
    collective impact of the withheld evidence requires us to step
    back and consider the strength of the prosecution’s case
    . . . .” 
    Id.
    The prosecution provided Hooper with the photos and
    police reports during its case-in-chief, about three weeks
    before Hooper presented his defense. Hooper used the
    evidence to show that the Bradfords and Ward should have
    been treated as suspects in the Redmond crimes and that the
    officers unreasonably discounted them as suspects. Hooper
    claims that earlier disclosure of the photos would have
    allowed him to (1) show the jury the similarities between the
    brown jacket worn by Michael Bradford to the one worn by
    the intruder as described by Marilyn and (2) emphasize the
    similarities between Hooper and the Bradfords and Ward to
    show that Marilyn had mistakenly identified Hooper. But
    HOOPER V. SHINN                            47
    Hooper had the opportunity to use the photos for these
    purposes. Hooper also asserts that earlier disclosure of the
    photos and reports would have changed his defense theory
    and opening statement, but he offers no specifics on how his
    theory or opening statement would have changed. 19
    Thus, Hooper either used the photos and reports or had a
    meaningful opportunity to do so. And he fails to show how
    earlier disclosure would have made this evidence more
    useful to his defense. We discern no prejudice from the
    delayed disclosure of the photos and reports. See United
    States v. Gordon, 
    844 F.2d 1397
    , 1403 (9th Cir. 1988)
    (holding no Brady violation because “defendants had
    substantial opportunity to use the documents and to cure any
    prejudice caused by the delayed disclosure”).
    Turning to the Merrill benefits, Hooper could have used
    this evidence to impeach Merrill. But the defense presented
    overwhelming evidence discrediting Merrill and showing he
    had personal motives to lie. The jury knew that Merrill was
    a serial liar, a criminal, and had received significant benefits
    from the State for his cooperation, including a deal that
    ensured he would not be sentenced to death for the Redmond
    murders and an out-of-jail visit so he could have sex with his
    wife. Given the wealth of impeachment evidence that was
    presented, the nondisclosure does not undermine confidence
    in the verdict. At best, it is exceedingly unlikely that
    additional evidence showing that Merrill and his wife
    received money and other benefits from Ryan and the State
    19
    And, of course, as noted above, Marilyn testified that the men in
    the photos were not the men who invaded her home, murdered her
    husband and mother, and tried to murder her.
    48                   HOOPER V. SHINN
    equaling several thousand dollars would have changed the
    jury’s view of Merrill’s credibility.
    To the extent the Merrill benefits might have suggested
    that the State’s investigation was tainted because Ryan
    engaged in improper conduct, this theory was presented to
    the jury and supported by other, more compelling evidence.
    The jury knew that Ryan had taken Merrill out of jail to have
    sex with his wife, had stopped his tape-recorded interview
    with Merrill more than twenty times for no apparent reason
    other than to coach Merrill on what he should say, threatened
    a witness with physical violence, directed a witness to lie to
    the police and gave that witness money, and lied to a
    probation officer to secure a reduced sentence for
    Campagnoni. Thus, the jury had many reasons to question
    the integrity of the State’s investigation based on Ryan’s
    actions, and the Merrill benefits would have simply added
    another reason to the already compelling evidence.
    Having examined the withheld evidence individually, we
    now consider its cumulative effect, which “requires us to
    step back and consider the strength of the prosecution’s
    case.” Barker, 
    423 F.3d at 1099
    .
    Marilyn was the State’s key witness. Her in-court
    identifications of Hooper and Bracy as the intruders were
    certain and unwavering. She had years of work experience
    in recognizing people by their physical features, and during
    the encounter she had several opportunities to look at the
    intruders’ faces. Her testimony was corroborated by
    substantial evidence, other than Merrill’s testimony, which
    showed that Hooper and Bracy were in Phoenix on New
    Year’s Eve and involved in the Redmond crimes. This
    evidence that Hooper and Bracy were both in Phoenix on
    HOOPER V. SHINN                   49
    New Year’s Eve, and thus, that they had created fake alibis, 20
    provided additional evidence of Hooper’s guilt. See United
    States v. Dorsey, 
    677 F.3d 944
    , 950 (9th Cir. 2012) (“That
    Dorsey tried to create a fake alibi was not merely ineffective,
    but also stands high in the hierarchy of evidence tending to
    show guilt.”).
    It is at best unlikely that earlier disclosure of the photos
    and reports, and disclosure of the Merrill benefits, would
    have affected the jury’s view of the overwhelming evidence
    supporting Hooper’s guilt. The photos and reports were
    presented to the jury, and Hooper used them to challenge the
    officers’ reasons for discounting the Bradfords and Ward as
    suspects in the Redmond crimes and to argue that the men
    should have been treated as suspects. Hooper fails to show
    how the delayed disclosures had any effect on the evidence
    supporting his guilt.
    The Merrill benefits would have given the jury additional
    reasons to disbelieve Merrill and to question the State’s
    investigation. But Merrill was not a crucial witness.
    Hooper’s guilt was supported by significant other evidence,
    and further impeaching Merrill would not have affected
    Marilyn’s key testimony or the testimonies of other
    important witnesses. The defense presented extensive
    evidence portraying Ryan as an unscrupulous investigator.
    Hooper used the evidence to suggest that the State’s
    investigation was tainted, including that Ryan had
    improperly influenced Marilyn’s pretrial identifications of
    Hooper and Bracy. The jury rejected that theory. It is at best
    unlikely that additional evidence that Ryan and the State
    gave benefits to Merrill and his wife would have affected the
    20
    The jury obviously did not believe the alibis.
    50                    HOOPER V. SHINN
    jury’s view of Marilyn’s crucial testimony or the testimonies
    of witnesses other than Merrill.
    In sum, earlier disclosure of the photos and reports and
    disclosure of the Merrill benefits would not have “put the
    whole case in such a different light as to undermine
    confidence in the verdict.” Kyles, 
    514 U.S. at 435
    . The State
    had a strong case, even without Merrill’s testimony. The
    jury knew about the photos and reports, Hooper used them
    in his defense, and the jury rejected his arguments. The jury
    knew that Merrill was a self-interested liar, and that Ryan
    was an unscrupulous investigator. Thus, “[t]he difference
    between the story . . . that the jury knew and that which
    would have been presented with the withheld evidence is not
    significant.” Barker, 
    423 F.3d at 1101
    . We are therefore
    confident in the verdict and conclude that, even assuming
    AEDPA does not bar our review of Hooper’s Brady claims,
    the delay in producing the photos and police reports, and the
    failure to disclose the Merrill benefits, were not material.
    B. Motion for Leave to Amend—Eighth and Fourteenth
    Amendment Claims
    Hooper requested leave to amend his petition to include
    a claim that his death sentence violates the Eighth and
    Fourteenth Amendments because the sentence was based on
    his invalid Illinois convictions. The district court denied his
    request as futile. The district court reviewed the state post-
    conviction court’s 2005 decision and found that its rejection
    of Hooper’s claim was neither contrary to nor an
    unreasonable application of clearly established law under
    AEDPA. The post-conviction court rejected the claim
    because, even assuming the Illinois convictions were
    invalid, Hooper failed to show he would have probably
    received a sentence less than death because there were still
    two valid aggravating factors and no mitigating factors. The
    HOOPER V. SHINN                              51
    district court determined that the post-conviction court had
    properly reweighed the aggravating and mitigating factors or
    conducted a harmless error analysis in accordance with
    Supreme Court precedent. The district court concluded that
    any amendment would be futile because Hooper failed to
    overcome AEDPA deference as to his claim.
    “The court should freely give leave [to amend] when
    justice so requires.” Fed. R. Civ. P. 15(a)(2); see Bonin v.
    Calderon, 
    59 F.3d 815
    , 845 (9th Cir. 1995) (applying Rule
    15(a) in a habeas case). “Futility of amendment can, by
    itself, justify the denial of a motion for leave to amend.”
    Bonin, 
    59 F.3d at 845
    . Amendment is futile if the claim
    sought to be added is not viable on the merits. See Murray,
    745 F.3d at 1015.
    We agree with the district court that amendment would
    be futile. We first consider Hooper’s claim that his Eighth
    Amendment rights were violated because his death sentence
    was based on his invalid Illinois convictions. We then
    discuss Hooper’s Fourteenth Amendment due process
    claim. 21
    1. Eighth Amendment Claim
    Under AEDPA, we review the post-conviction court’s
    decision rejecting Hooper’s Eighth Amendment claim. See
    id. at 1006 (looking through the Arizona Supreme Court’s
    21
    Although the district court failed to specifically address Hooper’s
    Fourteenth Amendment claim, we exercise our discretion and consider
    the claim because it is a purely legal question that can be decided on the
    record developed below. See Quinn v. Robinson, 
    783 F.2d 776
    , 814 (9th
    Cir. 1986) (“We have discretion to decide whether to address an issue
    that the district court did not reach if the question is a purely legal one
    and the record has been fully developed prior to appeal . . . .”).
    52                   HOOPER V. SHINN
    decision to the last reasoned state-court decision). In doing
    so, we apply the clearly established law that, when a death
    sentence is based in part on an invalid aggravating
    circumstance, an appellate court can uphold the sentence if
    it either reweighs the aggravating and mitigating
    circumstances or reviews the sentence for harmless error.
    Clemons v. Mississippi, 
    494 U.S. 738
    , 741, 751–54 (1990).
    Under Arizona’s death penalty statute, the court “shall
    impose a sentence of death if the court finds one or more of
    the aggravating circumstances enumerated in [the statute]
    and that there are no mitigating circumstances sufficiently
    substantial to call for leniency.” A.R.S. § 13-703(E).
    “[U]nder A.R.S. § 13-703(E), the trial court must impose a
    sentence of death if it finds the existence of one statutory
    aggravating factor and does not find the existence of any
    mitigating factor . . . . A death sentence is thus required
    regardless of the trial court’s belief that a life sentence is
    appropriate.” State v. Beaty, 
    762 P.2d 519
    , 533–34 (Ariz.
    1988); see also State v. Jordan, 
    672 P.2d 169
    , 173 (Ariz.
    1983) (en banc) (“Where one or more statutory aggravating
    circumstance is found, and no mitigation exists, the statute
    requires the death penalty.” (quoting State v. Gretzler,
    
    659 P.2d 1
    , 13 (Ariz. 1983) (en banc))). This provision of
    Arizona’s death penalty statute has been upheld as
    constitutional by the Supreme Court. See Walton v. Arizona,
    
    497 U.S. 639
    , 651–52 (1990) (plurality opinion) (evaluating
    Arizona’s death penalty statute and reaffirming that if a
    sentencer was not precluded from considering all relevant
    mitigation, a “statute requiring the imposition of the death
    penalty if aggravating circumstances were found to exist but
    no mitigating circumstances were present” is constitutional),
    overruled on other grounds by Ring v. Arizona, 
    536 U.S. 584
    (2002).
    HOOPER V. SHINN                             53
    Hooper argues that the state court’s decision was
    contrary to Supreme Court precedent because it
    automatically affirmed his death sentence. We disagree.
    The state court first determined that, even if Hooper’s
    Illinois convictions were invalid, two aggravating
    circumstances remained—he committed the offense in
    expectation of receiving something of pecuniary value under
    A.R.S. § 13-703(F)(5) and in an especially heinous, cruel, or
    depraved manner under A.R.S. § 13-703(F)(6). The court
    then found that there were no mitigating circumstances.
    Because there were two aggravators and no mitigators, the
    court determined that the sentencer would have been
    required to impose a death sentence under Arizona law, and
    thus Hooper failed to show that the invalidity of his Illinois
    convictions would have changed his sentence.
    The state court conducted a harmless error analysis in
    accordance with Supreme Court precedent. See Clemons,
    
    494 U.S. at 741
    , 751–54. It properly determined that any
    error in including Hooper’s invalid convictions was
    harmless because Arizona law requires a death sentence if
    there is at least one aggravating circumstance and no
    mitigating circumstances. See Jordan, 
    672 P.2d at 173
    .
    Thus, Hooper fails to show that the state court’s decision was
    contrary to clearly established law. 22
    22
    Hooper makes no claim that the state post-conviction court failed
    to apply the “beyond a reasonable doubt” harmless error standard. See
    Clemons, 
    494 U.S. at 753
    . Even if he had, he would have had to
    overcome our rule that, “in AEDPA cases, we apply a presumption that
    state courts know and follow the law and accordingly give state-court
    decisions the benefit of the doubt.” Poyson v. Ryan, 
    879 F.3d 875
    , 889
    (9th Cir. 2018) (quotation marks and citations omitted). More
    importantly, as discussed below, even if Hooper could overcome
    AEDPA, his claim would fail because he cannot show actual prejudice.
    54                    HOOPER V. SHINN
    Hooper also argues that the post-conviction court’s
    decision was based on an unreasonable factual determination
    that there were no mitigating circumstances. We reject this
    argument because the court’s factual determination was
    reasonable. During the aggravation and mitigation hearing,
    Hooper presented no evidence. During sentencing, the court
    noted that “Hooper neither presented any evidence, nor had
    a statement to make concerning mitigating factors or any
    other fac[e]t of his presentation in court.” The Arizona
    Supreme Court agreed that Hooper presented no mitigating
    circumstances. Hooper, 703 P.2d at 495 (“The trial court
    also considered all possible mitigating circumstances and
    found none to exist. We agree.”). And Hooper identifies no
    mitigating circumstances that the sentencing court or the
    Arizona Supreme Court found. The state post-conviction
    court’s factual determination was not unreasonable (and
    indeed was compelled).
    Moreover, even if Hooper could show that the state
    court’s decision was contrary to clearly established law
    because it automatically affirmed his sentence, his claim
    would be unavailing because he fails to show actual
    prejudice.
    “[Federal] habeas petitioners are not entitled to habeas
    relief based on trial error unless they can establish that it
    resulted in actual prejudice.” Davis v. Ayala, 
    576 U.S. 257
    ,
    267 (2015) (quotation marks omitted) (quoting Brecht v.
    Abrahamson, 
    507 U.S. 619
    , 637 (1993)). “Under this test,
    relief is proper only if the federal court has grave doubt about
    whether a trial error of federal law had substantial and
    injurious effect or influence in determining the jury’s
    verdict.” 
    Id.
     at 267–68 (quotation marks omitted) (quoting
    O’Neal v. McAninch, 
    513 U.S. 432
    , 436 (1995)); see also
    Beardslee v. Brown, 
    393 F.3d 1032
    , 1041–44 (9th Cir. 2004)
    HOOPER V. SHINN                               55
    (applying Brecht’s harmless error test to an Eighth
    Amendment error based on the improper consideration of
    invalid aggravating factors).
    Two valid aggravating circumstances remain after
    excluding the two that were based on the invalid Illinois
    convictions. 23 Hooper makes no claim that the invalid
    convictions in any way tainted the two remaining
    aggravators, nor could he. Under Arizona law, as long as
    Hooper had at least one valid aggravator, he was eligible for
    the death penalty. See A.R.S. § 13-703(E). Because the
    state court found no mitigators, and we must defer to that
    finding under AEDPA, Arizona law requires the imposition
    of a death sentence. See Beaty, 
    762 P.2d at
    533–34. Thus,
    Hooper’s claim would fail because he suffered no prejudice
    from the introduction of the invalid convictions.
    Because Hooper’s Eighth Amendment claim is not
    viable, the district court properly denied him leave to amend
    his petition based on futility.
    2. Fourteenth Amendment Claim
    Hooper primarily argues that, under Brown v. Sanders,
    
    546 U.S. 212
     (2006), the introduction of the invalid Illinois
    convictions during sentencing violated his due process rights
    under the Fourteenth Amendment, mandating the reversal of
    his death sentence. Thus, according to Hooper, the Arizona
    Supreme Court’s summary dismissal of his due process
    claim was contrary to or an unreasonable application of
    23
    Under A.R.S. § 13-703(F)(5), that Hooper “committed the
    offense[s] as consideration for the receipt or in expectation of the receipt
    of anything of pecuniary value,” Hooper, 
    703 P.2d at 494
    , and under
    A.R.S. § 13-703(F)(6), that Hooper “committed the offense[s] in an
    especially heinous, cruel, or depraved manner,” id. at 495.
    56                        HOOPER V. SHINN
    Sanders. Hooper’s claim is not viable, but we first address
    the parties’ dispute over whether Sanders was clearly
    established for AEDPA purposes.
    Sanders was decided after the post-conviction court’s
    2005 decision but before the Arizona Supreme Court’s
    summary dismissal. Therefore, whether Sanders was clearly
    established depends on whether the Arizona Supreme
    Court’s summary denial was the last state-court adjudication
    on the merits. See Greene, 
    565 U.S. at
    38–40 (holding that
    clearly established law under AEDPA includes only
    Supreme Court decisions announced after the last state-court
    adjudication on the merits).
    We need not decide whether Sanders was clearly
    established because, even if it were, Hooper’s due process
    claim is not viable. 24
    Hooper argues that Sanders established a categorical rule
    that irrelevant evidence introduced at sentencing is a due
    24
    We will assume for our discussion that Hooper exhausted his due
    process claim and that it was adjudicated on the merits by the state court.
    We note, however, that Hooper likely procedurally defaulted his due
    process claim because he did not raise it in his petition for review to the
    Arizona Supreme Court. See Ariz. R. Crim. P. 32.2(a)(3) (precluding
    relief on the ground that a sentence was imposed in violation of the
    Constitution when that ground has been “waived at trial or on appeal, or
    in any previous post-conviction proceeding”); Murray, 745 F.3d at 1016
    (“[T]he Supreme Court has recognized Arizona Rule of Criminal
    Procedure 32.2(a)(3) as an independent and adequate state ground that
    bars federal habeas review of constitutional claims.”). Hooper
    supplemented his petition and provided a citation to Sanders, but he did
    not allege a due process violation under Sanders. This was likely
    insufficient to exhaust his due process claim. See Powell v. Lambert,
    
    357 F.3d 871
    , 874 (9th Cir. 2004) (“A petitioner has exhausted his
    federal claims when he has fully and fairly presented them to the state
    courts.”). But the State has not asserted procedural default.
    HOOPER V. SHINN                        57
    process violation that mandates reversal of a sentence, and
    therefore, the state court’s failure to reverse his sentence was
    contrary to or an unreasonable application of Sanders. We
    disagree because Sanders did not establish any such rule.
    Hooper’s argument is based on the following statement
    in Sanders: “If the presence of the invalid sentencing factor
    allowed the sentencer to consider evidence that would not
    otherwise have been before it, due process would mandate
    reversal without regard to the rule we apply here.” 
    546 U.S. at
    220–21. First, this statement is not the holding of Sanders
    but was made in response to the dissent’s criticism of
    Sanders’s holding. 
    Id.
    Second, the Supreme Court held in Romano v.
    Oklahoma, 
    512 U.S. 1
     (1994), that, in capital sentencing
    proceedings, the introduction of irrelevant and prejudicial
    evidence violates the Due Process Clause of the Fourteenth
    Amendment when admission of the evidence “so infected
    the sentencing proceeding with unfairness as to render the
    jury’s imposition of the death penalty a denial of due
    process.” 
    Id. at 12
    . Nothing in Sanders suggests that the
    Court intended to overrule Romano’s test with a categorical
    rule that irrelevant evidence introduced at sentencing is a due
    process violation that mandates reversal of a sentence.
    Finally, the Court confirmed in Kansas v. Carr, 
    577 U.S. 108
     (2016), that Romano’s test continues to apply to alleged
    due process violations based on improperly admitted
    evidence at capital-sentencing proceedings: “The test
    prescribed by Romano for a constitutional violation
    attributable to evidence improperly admitted at a capital-
    sentencing proceeding is whether the evidence ‘so infected
    the sentencing proceeding with unfairness as to render the
    jury’s imposition of the death penalty a denial of due
    process.’” 
    Id.
     at 123–24 (quoting Romano, 
    512 U.S. at 12
    ).
    58                        HOOPER V. SHINN
    In addition, Carr appears to reject the categorical rule urged
    by Hooper: “The mere admission of evidence that might not
    otherwise have been admitted . . . does not demand the
    automatic vacatur of a death sentence.” 
    Id. at 124
    .
    Thus, even if Sanders was clearly established, it was not
    the applicable clearly established law governing Hooper’s
    due process claim. A state court’s failure to apply
    inapplicable Supreme Court precedent cannot be contrary to
    or an unreasonable application of clearly established law,
    and therefore Hooper fails to overcome AEDPA deference
    as to his due process claim. And Hooper presents no
    argument that the state court’s decision was contrary to or an
    unreasonable application of Romano. For these reasons, it
    would be futile to allow Hooper to amend his petition to
    include his due process claim. 25
    C. Ineffective Assistance of Sentencing Counsel Claim
    Hooper’s federal habeas petition claims that his
    sentencing counsel, Woods, rendered ineffective assistance
    by failing to investigate and present any mitigation evidence.
    Hooper did not raise this claim in his first state post-
    conviction petition, but he raised it in his second petition. In
    denying his second petition, the post-conviction court found
    25
    We also reject Hooper’s reliance on Eighth Amendment law to
    support his due process claim based on the erroneous admission of
    evidence. See Carr, 577 U.S. at 123 (“Whatever the merits of
    defendants’ procedural objections, we will not shoehorn them into the
    Eighth Amendment’s prohibition of ‘cruel and unusual punishments.’
    . . . [I]t is not the role of the Eighth Amendment to establish a special
    ‘federal code of evidence’ governing ‘the admissibility of evidence at
    capital sentencing proceedings.’ Rather, it is the Due Process Clause that
    wards off the introduction of ‘unduly prejudicial’ evidence that would
    ‘render the trial fundamentally unfair.’” (citations and brackets
    omitted)).
    HOOPER V. SHINN                           59
    that the claim was procedurally barred. The district court
    also found that the claim was procedurally defaulted, and
    that Hooper failed to show cause to excuse the procedural
    default.
    Hooper argues that the procedural default is excused
    under Martinez because his post-conviction counsel,
    Seplow, provided ineffective assistance by failing to raise
    the claim in his first state post-conviction petition. He also
    argues that the district court abused its discretion in denying
    his requests for discovery and an evidentiary hearing.
    1. Martinez Analysis
    “A prisoner may obtain federal review of a defaulted
    claim by showing cause for the default and prejudice from a
    violation of federal law.” Martinez, 
    566 U.S. at 10
    . 26 Under
    Martinez, “when a State requires a prisoner to raise an
    ineffective-assistance-of-trial-counsel claim in a collateral
    proceeding,” 
    id. at 14
    , “a prisoner may establish ‘cause’ to
    excuse the procedural default of a claim that the prisoner had
    received ineffective assistance of counsel . . . during
    sentencing proceedings by demonstrating that counsel in the
    initial-review collateral proceeding was ineffective or there
    was no counsel in such a proceeding,” Clabourne v. Ryan,
    
    745 F.3d 362
    , 375 (9th Cir. 2014), overruled on other
    grounds by McKinney v. Ryan, 
    813 F.3d 798
    , 819 (9th Cir.
    2015) (en banc). 27 A prisoner establishes prejudice by
    26
    Procedural default may also be excused when a prisoner
    “demonstrate[s] that failure to consider the claims will result in a
    fundamental miscarriage of justice.” Coleman v. Thompson, 
    501 U.S. 722
    , 750 (1991). This exception is not at issue here.
    27
    Because the parties do not dispute that Martinez applies to
    Hooper’s ineffective assistance of counsel claim, we assume without
    60                       HOOPER V. SHINN
    demonstrating “that the underlying ineffective-assistance-
    of-trial-counsel claim is a substantial one, which is to say
    that the prisoner must demonstrate that the claim has some
    merit.” Martinez, 
    566 U.S. at 14
    .
    The only issue before us is whether Hooper has
    established “cause” to excuse the procedural default. 28
    To establish “cause,” Hooper must show that his post-
    conviction counsel was ineffective under Strickland v.
    Washington, 
    466 U.S. 668
     (1984). That is, Hooper must
    show that post-conviction counsel’s performance was
    deficient and that he was prejudiced by this deficient
    performance, meaning that “there was a reasonable
    probability that, absent the deficient performance, the result
    of the post-conviction proceedings would have been
    different.” Clabourne, 745 F.3d at 377. “[F]or us to find a
    reasonable probability that [post-conviction] counsel
    prejudiced a petitioner by failing to raise a trial-level
    [ineffective assistance of counsel (IAC)] claim, we must also
    find a reasonable probability that the trial-level IAC claim
    would have succeeded had it been raised.” Runningeagle,
    825 F.3d at 982. Stated differently, “[i]f the ineffective
    assistance of trial counsel claim lacks merit, then the state
    deciding that Arizona law at the time of Hooper’s appeal required him to
    raise the claim in an initial-review collateral proceeding. But see
    Runningeagle, 825 F.3d at 981 n.12 (expressing no opinion on whether
    “Arizona law effectively required petitioners to bring [ineffective
    assistance of counsel] claims in initial-review collateral proceedings”
    before 1989).
    28
    The district found that the motions panel’s remand order
    determined that Hooper had established prejudice. The State does not
    challenge this finding. We therefore assume, without deciding, that
    Hooper has satisfied the prejudice prong of the “cause and prejudice”
    test.
    HOOPER V. SHINN                             61
    habeas counsel would not have been deficient for failing to
    raise it.” Atwood v. Ryan, 
    870 F.3d 1033
    , 1060 (9th Cir.
    2017). 29
    Thus, we first consider whether Woods was ineffective
    under Strickland.      Even assuming Woods performed
    deficiently by failing to investigate and present mitigation
    evidence (a question we need not and do not reach), 30 we
    29
    Hooper argues that to establish “cause,” he need show only that
    post-conviction counsel rendered deficient performance, citing Detrich
    v. Ryan, 
    740 F.3d 1237
     (9th Cir. 2013) (en banc). See 
    id.
     at 1245–46
    (plurality opinion) (stating that to establish “cause,” “a prisoner need
    show only that his PCR [post-conviction relief] counsel performed in a
    deficient manner” and “need not show actual prejudice resulting from
    his PCR counsel’s deficient performance, over and above his required
    showing that the trial-counsel IAC claim be ‘substantial’ under the first
    Martinez requirement”). We reject this argument because we have
    consistently distinguished Detrich and reaffirmed the Clabourne
    framework, which requires a petitioner who was represented by counsel
    in the initial-review collateral proceeding to establish “cause” by
    showing Strickland prejudice. See Rodney v. Filson, 
    916 F.3d 1254
    ,
    1260 & n.2 (9th Cir. 2019) (confirming that a petitioner represented by
    post-conviction counsel must show Strickland prejudice and the Detrich
    standard in the plurality opinion “applies [only] in cases in which the
    petitioner was not represented by counsel in the initial-review collateral
    proceeding”); see also Djerf v. Ryan, 
    931 F.3d 870
    , 880 (9th Cir. 2019)
    (applying Clabourne and requiring the petitioner to show Strickland
    prejudice to establish “cause”).
    30
    We do note some of the explanations Woods provided for his
    performance in 1983, when questioned during a 1992 deposition taken
    in connection with Bracy’s post-conviction proceeding:
    It was clear to me there were no mitigating factors, and
    almost every aggravating factor listed in the statute
    was present.
    62                      HOOPER V. SHINN
    find there is no “reasonable probability that, but for
    [Woods’s alleged] unprofessional errors, the result of the
    proceeding would have been different.” Strickland, 
    466 U.S. at 694
    . “In assessing prejudice, we reweigh the evidence in
    aggravation against the totality of available mitigating
    evidence.” Wiggins v. Smith, 
    539 U.S. 510
    , 534 (2003).
    “The likelihood of a different result must be substantial, not
    just conceivable.” Apelt v. Ryan, 
    878 F.3d 800
    , 832 (9th Cir.
    2017) (quoting Richter, 
    562 U.S. at 112
    ).
    The mitigation evidence that Hooper now presents,
    which he has had decades to collect, falls into two general
    categories—evidence of his life history and evidence related
    to his mental health. Hooper grew up in Chicago in a
    segregated, impoverished neighborhood. He lived with his
    mother, father, and four siblings. Both of his parents were
    ***
    [M]y goal was to try to have him not get the death
    sentence. And I believe my best chance would be to
    try to construct an argument directed specifically at
    that judge that maybe he might buy rather than put on
    a completely ineffectual and unpersuasive mitigation
    hearing just for the record, because it wouldn’t have
    done any good. So that’s what I did.
    ***
    I had a choice there. I could just try to protect the
    record, or I could try to talk the judge out of the death
    penalty. And I didn’t think I could do both. I could
    aggravate the situation with the judge by coming up
    with —There were no mitigating factors. That’s the
    bottom line. There were none. I could try to make up
    something or come up with some phony deal that he
    would not buy, or I could lay it on the line on a
    different level and see if I could persuade him.
    HOOPER V. SHINN                        63
    employed. His mother worked in manufacturing for twenty
    years and then worked at the post office for twenty-two
    years. His father worked in the stockyards. Hooper’s
    “family never had serious money problems.” His parents
    provided the children with food and clothing, and the family
    attended church every Sunday.
    As a child, Hooper saw people being shot in the streets,
    witnessed a person being beaten to death with a baseball bat,
    and saw a man “stomped to death in the street.” He also saw
    prostitutes and “stepped over drug addicts to get to school.”
    Hooper’s sister stated that their parents “tried to shield” them
    from the crime and drug use in their neighborhood.
    Growing up, Hooper suffered physical injuries, was
    beaten up by gangs, and had to fight to survive. At age
    eleven, he was hit in the head by a ball while playing baseball
    and knocked unconscious. At age twelve or thirteen, he was
    knocked unconscious by blows from an ax handle during a
    fight, and had his arm almost severed off by the ax blade.
    Hooper was once beaten in the head with a baseball bat.
    Hooper presents evidence that he was physically abused
    by his father. His father whipped him and his siblings “over
    their clothes and not on their bare skin” when they
    misbehaved. His father whipped him with extension cords
    at least two times a week. Hooper’s father drew a gun on
    Hooper and his siblings at least two times, but Hooper’s
    sister stated, “He was not going to shoot us.” There was no
    physical abuse between Hooper’s parents, but they argued a
    lot.
    Hooper was never in a gang, but he hung out with older,
    more violent juveniles. He first got into criminal trouble
    when he was thirteen or fourteen years old for robbery and
    vandalism. When his parents learned about his problems,
    64                    HOOPER V. SHINN
    they “repeatedly sat him down and talked to him.” Hooper
    was sent to various reformatories and juvenile detention
    centers. He offers news articles supporting that incidents of
    sexual assault and physical abuse occurred at two of the
    institutions in which he had been confined. But Hooper does
    not state if he was physically or sexually abused at those
    institutions.
    Hooper’s parents did not use drugs or abuse alcohol.
    Hooper started drinking alcohol when he was seventeen, and
    he reported that he consumed heavy amounts of alcohol “for
    years” and stopped only when he was incarcerated in 1981.
    Hooper has been institutionalized for most of his adult
    life. While incarcerated as a young adult, he obtained his
    GED and completed one year of college. In his twenties, he
    spoke to youth about staying away from a life of crime.
    Hooper has been a model prisoner and has not committed
    any disciplinary infractions since his extradition to Arizona
    in 2006. Hooper provides statements from several character
    witnesses who described him as supportive, caring, and a
    good person.
    Turning to Hooper’s evidence related to his mental
    health, he submits declarations from two mental health
    professionals. In 2015, psychologist Dr. James Garbarino
    declared that based on reports from Hooper’s siblings,
    Hooper had been a sensitive child with a vulnerable
    temperament. His upbringing in an “urban war zone”
    resulted in his desensitization to violent acts. Hooper
    experienced chronic trauma from the physical abuse he
    suffered within his family and community and his exposure
    to the traumatic environments in juvenile detention facilities.
    He appeared to be emotionally disconnected from adverse
    experiences and had difficulty regulating his emotions. Dr.
    Garbarino noted that a family member stated that from an
    HOOPER V. SHINN                         65
    early age Hooper had a “Jekyll/Hyde pattern,” as he had an
    “‘explosive temper,’ and could shift from being ‘sweet’ to
    expressing ‘rage.’” Dr. Garbarino concluded that Hooper’s
    chronic trauma and “urban war zone” environment
    contributed to his chronic antisocial and violent behavior.
    Dr. Garbarino opined that Hooper was not beyond
    rehabilitation based on positive reports from family, friends,
    and prison staff.
    Dr. Robert Heilbronner, a clinical neuropsychologist,
    reviewed records and evaluated Hooper in 2011. He found
    that Hooper demonstrated average IQ, average verbal
    intellectual abilities, and borderline to low average
    nonverbal performance abilities. Because he was unable to
    administer a complete battery of neuropsychological tests,
    Dr. Heilbronner was unable to explain the cause of the
    discrepancy between the verbal intellectual abilities and
    nonverbal performance abilities scores. Nevertheless, he
    surmised that multiple head traumas and social-educational
    deprivations as a child were likely contributors. He opined
    that the discrepancy “more likely than not reflects an
    abnormal pattern of intellectual functioning” and that “this
    pattern of impairment was present in 1981.”
    Later in 2015, Dr. Heilbronner completed his evaluation
    of Hooper by administering the rest of the
    neuropsychological tests. He was unable to determine with
    any degree of neuropsychological certainty the causes of the
    observed discrepancy. Dr. Heilbronner concluded that, had
    Hooper been tested closer to the time of trial, it is more likely
    66                       HOOPER V. SHINN
    than not that the results would have shown objective data of
    brain impairment. 31
    As for the aggravation evidence, the State established
    two statutory aggravating circumstances:             Hooper
    (1) “committed the offense[s] as consideration for the
    receipt, or in expectation of the receipt, of anything of
    pecuniary     value,”    A.R.S.      § 13-703(F)(5),     and
    (2) “committed the offense[s] in an especially heinous, cruel
    or depraved manner,” A.R.S. § 13-703(F)(6). 32
    The murder-for-hire aggravating circumstance carries
    great weight. See State v. Harrod, 
    183 P.3d 519
    , 535 (Ariz.
    2008) (en banc) (“[T]he pecuniary gain aggravating factor,
    particularly in the case of a contract killing, is especially
    strong. Accordingly, when a ‘hired hit’ has taken place, the
    (F)(5) aggravator has substantial weight.” (citation
    omitted)).
    The Arizona Supreme Court found that these facts
    established the existence of the “especially heinous, cruel or
    depraved” aggravating circumstance: the victims were
    herded at gunpoint, “forced to lie down on a bed, had their
    31
    In light of Dr. Heilbronner’s 2011 and 2015 evaluations, we deny
    as moot Hooper’s 2010 motion requesting a confidential contact visit
    between Dr. Heilbronner and Hooper to conduct a neuropsychological
    examination.
    32
    Hooper argued below and appears to argue on appeal that our
    prejudice analysis should exclude the two aggravating circumstances
    based on the invalid Illinois convictions. We need not reach this issue
    because, even assuming that we should exclude the two invalid
    aggravating circumstances, Hooper fails to show that there is a
    “reasonable probability that, but for [Woods’s alleged] unprofessional
    errors, the result of the proceeding would have been different.”
    Strickland, 
    466 U.S. at 694
    .
    HOOPER V. SHINN                       67
    hands taped behind their backs, and were gagged with
    socks”; “[e]xcept for the first victim, each of them had to
    endure the ‘unimaginable terror’ of having their loved ones
    shot to death within their hearing and then having to wait for
    their own turn to come”; “Phelps did not die from the first
    gunshot wound to her head, . . . she did not lose
    consciousness as a result thereof, and . . . she most certainly
    suffered pain from that wound”; the murderers inflicted
    “gratuitous violence” or “needless mutilation” by slashing
    Redmond’s throat after he had been shot twice through the
    head; and “the murderers killed Mrs. Phelps, an elderly
    houseguest of the Redmonds with no possible interest in
    their business affairs.” Bracy, 703 P.2d at 481–82 (quoting
    in part State v. McCall, 
    677 P.2d 920
    , 934 (Ariz. 1983) (en
    banc)); see also Hooper, 
    703 P.2d at 495
    . The trial court
    also observed that one of the murderers said “‘we don’t need
    these two anymore[,’ which] shows the inhumane and
    debase[d] motive possessed by [them].” Given these details
    of the Redmond murders, the “especially heinous, cruel or
    depraved” aggravating circumstance is also of substantial
    weight.
    In contrast, Hooper’s mitigation evidence is weak. The
    evidence of his difficult upbringing is “by no means clearly
    mitigating.” Cullen v. Pinholster, 
    563 U.S. 170
    , 201 (2011).
    That Hooper engaged in violent crimes such as robbery
    when he was thirteen, continued to engage in criminal
    conduct despite having been sent to juvenile detention and
    his parents’ attempts to intervene, and then continued a life
    of crime throughout his adult life, could have caused a jury
    to believe that he was beyond rehabilitation. See 
    id.
     (“The
    new evidence relating to Pinholster’s family—their more
    serious substance abuse, mental illness, and criminal
    problems—is also by no means clearly mitigating, as the jury
    might have concluded that Pinholster was simply beyond
    68                    HOOPER V. SHINN
    rehabilitation.” (citation omitted)).       Additionally, that
    Hooper was thirty-five years old when he committed the
    Redmond murders further decreases the mitigating effect of
    his childhood circumstances. See State v. Ellison, 
    140 P.3d 899
    , 927 (Ariz. 2006) (en banc) (“[Defendant’s] childhood
    troubles deserve little value as a mitigator for the murders he
    committed at age thirty-three.”).
    Dr. Garbarino’s assessment is also not clearly mitigating.
    Though he surmised that Hooper was not beyond
    rehabilitation, he concluded that Hooper’s upbringing
    “desensitized him to acting in a violent manner” and caused
    him to develop a “war zone mentality.” This evidence could
    have weighed against Hooper because it shows his
    propensity for violence. See Apelt, 878 F.3d at 834
    (“[P]resenting Apelt’s upbringing and activities in Germany
    to explain how Apelt became a calculating killer arguably
    could weigh in favor rather than against the death penalty.”).
    The evidence of his alcohol use carries little or no weight
    because there is no evidence that Hooper was influenced by
    alcohol at the time of the Redmond murders. See Henry v.
    Ryan, 
    720 F.3d 1073
    , 1090 (9th Cir. 2013) (“[S]tate courts
    are free to consider the absence of a causal connection when
    assessing the quality and strength of such evidence.”); cf.
    A.R.S. § 13-703(G)(1) (recognizing as a statutory mitigating
    circumstance: “The defendant’s capacity to appreciate the
    wrongfulness of his conduct or to conform his conduct to the
    requirements of law was significantly impaired”). Further,
    Hooper’s heavy alcohol use might have weighed against
    him. See Henry, 720 F.3d at 1090 n.11 (noting that a history
    of alcoholism might be considered aggravating).
    Hooper’s evidence of good character and prison
    behavior is of minimal weight, especially given the strong
    rebuttal evidence that the prosecutor could have highlighted
    HOOPER V. SHINN                       69
    and introduced.       See Harrod, 
    183 P.3d at
    534–35
    (commenting that mitigating evidence of good character
    deserves less weight in a case involving a murder planned in
    advance). Hooper had a long adult criminal history, which
    started at age eighteen and progressed from disorderly
    conduct to much more serious crimes of armed robbery and
    attempted murder. In rebuttal, the prosecutor could have
    presented the details of these crimes. The prosecutor could
    have also emphasized Hooper’s damaging statements that he
    would have killed Redmond and his family for “a couple
    hundred dollars a person,” that he was “better off dead or in
    the pen because if [he] got out again [he] would probably
    just kill someone again,” and that he “like[s] to shoot people,
    it doesn’t bother [him] a bit.” The supplemental PSR stated
    that a Chicago police officer believed Hooper was a
    “member of a prison gang/terrorist group called the Royal
    Family for twelve or thirteen years.” Presumably, the State
    could have presented details about this group and Hooper’s
    connection to the group to further rebut his “good character”
    and prison behavior evidence.
    As for Dr. Heilbronner’s neuropsychological evaluation,
    not only could it have opened the door for the prosecution to
    retain an expert in rebuttal, see Pinholster, 
    563 U.S. at 201
    ,
    but also, Dr. Heilbronner’s conclusion is speculative. He
    concluded that Hooper likely had some type of brain
    impairment at the time of trial but provided no insight into
    what that impairment could have been, how such an
    impairment would have affected Hooper, or how it might
    have been related to the crimes. This type of speculative
    evidence is insufficient to establish prejudice. See Atwood,
    870 F.3d at 1064 (noting that speculation that petitioner had
    a brain dysfunction or disorder was not sufficient to establish
    prejudice); Rhoades v. Henry, 
    638 F.3d 1027
    , 1050 (9th Cir.
    2011) (“Speculation about potential brain dysfunctions or
    70                       HOOPER V. SHINN
    disorders ‘is not sufficient to establish prejudice.’” (citation
    omitted)).
    Considering the two aggravating factors, both of which
    carry significant weight, alongside Hooper’s insubstantial
    mitigation evidence, there is no “reasonable probability that,
    but for [sentencing] counsel’s [alleged] unprofessional
    errors, the result of the proceeding would have been
    different.” Strickland, 
    466 U.S. at 694
    . Because Hooper’s
    trial-level ineffective assistance of counsel claim lacks merit,
    Hooper’s post-conviction counsel, Seplow, was not deficient
    for failing to raise it, and Hooper cannot show that Seplow
    was ineffective under Strickland. Accordingly, Hooper fails
    to establish “cause” under Martinez, and his claim is
    procedurally barred. 33
    2. Denial of Discovery and Evidentiary Hearing
    In the district court, Hooper requested discovery and an
    evidentiary hearing to support his argument that the
    procedural default of his ineffective assistance of counsel
    claim is excused under Martinez. He also asked to expand
    the record to include all the materials attached to his
    supplemental briefs addressing the Martinez issue. The
    court granted Hooper’s request to expand the record. The
    33
    Though our prejudice analysis construes Hooper’s mitigation
    evidence in his favor, we note that his mitigation evidence on the level
    of violence in his childhood neighborhoods and the extent of the physical
    abuse by his father is not consistent. A family member stated that their
    neighborhoods were not “overly violent.” Family members also stated
    that the whippings by Hooper’s father occurred “[n]ot so often,” and that
    Hooper and his siblings “received no punishments” from their parents.
    The evidence of his history of alcohol use is also ambiguous. Hooper’s
    friend, who knew Hooper in the mid-1970s, stated that Hooper did not
    have an alcohol problem. Hooper’s PSR also stated that Hooper
    “reportedly denies the abuse of alcohol and drugs.”
    HOOPER V. SHINN                       71
    expanded record included declarations and interviews of
    potential mitigation witnesses, including the declarations of
    his medical experts. After reviewing the record, including
    the newly added materials, the district court determined that
    discovery and an evidentiary hearing were unnecessary.
    “We review the district court’s denial of discovery and
    an evidentiary hearing for abuse of discretion.” Smith v.
    Mahoney, 
    611 F.3d 978
    , 997 (9th Cir. 2010).
    Hooper claims that discovery and an evidentiary hearing
    would resolve the factual disputes related to whether Woods
    performed deficiently. This argument is unavailing given
    our decision that, even assuming Woods performed
    deficiently, Hooper cannot show “cause” for the procedural
    default. He also makes the conclusory assertion that
    “[e]xpert and lay witnesses could show the full extent of the
    available mitigation case, and explain its significance” at an
    evidentiary hearing. Hooper, however, does not identify
    who those witnesses would be, and he makes no claim that
    their testimony would differ materially from the mitigation
    evidence that is already in the record.
    Hooper also takes issue with the district court’s denial of
    his request to depose the “major actors,” including Woods
    and Seplow, based on Hooper’s failure to “allege specific,
    relevant facts that might be found in the requested
    depositions.” But Hooper does not explain how that
    determination was an abuse of discretion. And in his
    briefing to us he fails to allege any specific material facts
    that would be obtained from the requested depositions and
    makes no claim that any deposition testimony would be
    materially different from the mitigation evidence in the
    record. Indeed, as pointed out by the district court, the
    record already contains the deposition of Woods and a
    declaration by Seplow.
    72                    HOOPER V. SHINN
    Because Hooper fails to show what additional evidence
    he could have obtained from discovery or an evidentiary
    hearing to support that he was prejudiced by Woods’s
    performance, the district court did not abuse its discretion in
    denying his requests for discovery and an evidentiary
    hearing. See Henry, 720 F.3d at 1087 (affirming the denial
    of an evidentiary hearing when petitioner failed to “point to
    any additional evidence that could be properly pursued at an
    evidentiary hearing to” support his claim); see also
    Runningeagle, 825 F.3d at 990 (holding that the district court
    did not abuse its discretion in denying an evidentiary hearing
    when “[t]he expanded record included the declarations of
    witnesses who would testify at a live hearing, and
    Runningeagle made no showing that their testimony would
    differ materially from their declarations”).
    D. Request to Expand the COA
    Hooper seeks to expand the COA to include two
    uncertified claims: (1) the trial court’s decision to shackle
    him was unconstitutional because it was not based on an
    individualized determination or justified by an essential state
    interest, and (2) the unconstitutional shackling caused him to
    involuntarily waive his right to be present at voir dire
    because he was forced to choose between two constitutional
    rights—the right to appear before the jury free of restraints
    and the right to be present at jury selection.
    Under AEDPA, a COA may issue “only if the applicant
    has made a substantial showing of the denial of a
    constitutional right.”     
    28 U.S.C. § 2253
    (c)(2).        In
    determining whether Hooper has met this standard, “[w]e
    look to the District Court’s application of AEDPA to
    [Hooper’s] constitutional claims and ask whether that
    resolution was debatable amongst jurists of reason.” Miller-
    El v. Cockrell, 
    537 U.S. 322
    , 336 (2003).
    HOOPER V. SHINN                       73
    The Arizona Supreme Court considered and rejected
    Hooper’s uncertified claims on direct appeal. Hooper,
    
    703 P.2d at
    487–88. The Arizona Supreme Court found that
    the trial court did not abuse its discretion in ordering Hooper
    shackled given that he had been convicted of three murders
    in Illinois and was under three death sentences for those
    murders. 
    Id. at 487
    . It also found that the restraints were not
    visible to the jury. 
    Id.
     Because Hooper had been properly
    restrained, the court determined that “he was not denied his
    right to be present when he voluntarily chose to be absent
    during voir dire.” 
    Id.
     at 487–88.
    The district court deferred to the Arizona Supreme
    Court’s finding that the jury did not see Hooper’s shackles.
    The district court then determined that the Arizona Supreme
    Court’s ruling on the unconstitutional shackling claim was
    not contrary to or an unreasonable application of clearly
    established law. It also rejected, under AEDPA, Hooper’s
    claim that the alleged unconstitutional shackling order
    caused him to waive his right to be present at voir dire.
    When the Arizona Supreme Court adjudicated Hooper’s
    unconstitutional shackling claim, there was no clearly
    established law on “the specific procedural steps a trial court
    must take prior to [visible] shackling, about the amount and
    type of evidence needed to justify restraints, and about what
    forms of prejudice might warrant a new trial.” Deck v.
    Missouri, 
    544 U.S. 622
    , 629 (2005); see Crittenden v. Ayers,
    
    624 F.3d 943
    , 970–72 (9th Cir. 2010) (interpreting Deck as
    confirming that there was no clearly established law
    regarding any required procedures before shackling a
    defendant). Because there was no clearly established law
    that required a trial court to make an individualized
    determination before imposing shackles, no reasonable jurist
    could disagree with the district court’s conclusion that the
    74                       HOOPER V. SHINN
    Arizona Supreme Court’s decision was not contrary to or an
    unreasonable application of clearly established law. See
    Brewer, 
    378 F.3d at 955
    .
    The district court properly deferred to the Arizona
    Supreme Court’s determination that the jury did not see the
    shackles, as that factual conclusion was not unreasonable.
    There is no indication in the state court record that any juror
    saw shackles on Hooper. Indeed, Hooper made no allegation
    in his brief to the Arizona Supreme Court that the shackles
    were visible, and his briefs here fail to point to any part of
    the record that shows a juror saw his shackles. 34 Given the
    lack of any evidence that the jury saw Hooper’s shackles, no
    reasonable jurist could disagree with the district court’s
    decision to defer to the Arizona Supreme Court’s factual
    finding that the shackles were not visible. See Dixon v.
    Ryan, 
    932 F.3d 789
    , 810–11 (9th Cir. 2019) (holding that the
    state court’s factual conclusion that restraints were not
    visible was reasonable because there was no evidence to the
    contrary).
    Hooper’s second uncertified claim that he was forced to
    choose between two constitutional rights depends on a
    determination that his shackling was unconstitutional. But
    that claim necessarily fails because we must defer to the
    Arizona Supreme Court’s decision that his shackling was
    proper. We therefore conclude that no reasonable jurist
    34
    Hooper provides a 1992 affidavit signed by Bracy to support his
    claims. We cannot consider this affidavit because it was not part of the
    record on direct appeal. See Pinholster, 
    563 U.S. at
    181–82. Even if we
    were to consider the affidavit, it does not claim that any juror saw
    Hooper’s shackles. Further, even if the affidavit could be construed as
    raising the possibility that his shackles may have been visible at times,
    the mere possibility that a juror saw his shackles would not render the
    Arizona Supreme Court’s factual determination unreasonable.
    HOOPER V. SHINN                       75
    could debate the district court’s rejection of Hooper’s second
    uncertified claim.
    We deny Hooper’s request to expand the COA.
    IV. Conclusion
    We affirm the district court’s denial of the writ of habeas
    corpus. Hooper’s Brady claims are either barred by AEDPA
    or fail on the merits under de novo review. The district court
    properly denied Hooper’s request for leave to amend his
    petition to include claims that his death sentence violates the
    Eighth and Fourteenth Amendments because any
    amendment would be futile. We also affirm the district
    court’s conclusion that Hooper’s ineffective assistance of
    sentencing counsel claim is procedurally defaulted, and that
    Hooper fails to show cause under Martinez to excuse the
    default. Finally, we decline to expand the COA.
    AFFIRMED.