David Ramirez v. Charles Ryan ( 2019 )


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  •                 FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    DAVID MARTINEZ RAMIREZ,                No. 10-99023
    Petitioner-Appellant,
    D.C. No.
    v.                    2:97-cv-01331-JAT
    CHARLES RYAN,
    Respondent-Appellee.            OPINION
    Appeal from the United States District Court
    for the District of Arizona
    James A. Teilborg, District Judge, Presiding
    Argued and Submitted January 16, 2019
    San Francisco, California
    Filed September 11, 2019
    Before: Sidney R. Thomas, Chief Judge, and Marsha S.
    Berzon and Richard R. Clifton, Circuit Judges.
    Opinion by Chief Judge Thomas;
    Partial Concurrence and Partial Dissent by Judge Berzon
    2                        RAMIREZ V. RYAN
    SUMMARY*
    Habeas Corpus / Death Penalty
    The panel affirmed in part and reversed in part the district
    court’s denial of David Ramirez’s habeas corpus petition
    challenging his Arizona conviction and death sentence for the
    murders of his girlfriend and her daughter, and remanded.
    The panel explained that the district court—on remand for
    reconsideration of whether post-conviction counsel’s
    ineffectiveness constituted cause and prejudice under
    Martinez v. Ryan, 
    566 U.S. 1
     (2012), to overcome the
    procedural default of Ramirez’s claim of trial counsel’s
    ineffectiveness—erred by conducting a full merits review of
    the underlying ineffective assistance of counsel claim on an
    undeveloped record, rather than addressing whether the claim
    was “substantial.” The panel held that the underlying claim
    of ineffective assistance of trial counsel was substantial, thus
    constituting “prejudice” under Martinez, because trial counsel
    failed to present or pursue evidence of Ramirez’s intellectual
    disability, failed to provide relevant and potentially
    mitigating evidence to the psychologist who evaluated
    Ramirez, and subsequently relied on the psychologist’s
    report, despite possessing contrary facts. The panel held that
    Ramirez established cause under Martinez because had post-
    conviction counsel raised the substantial claim of ineffective
    assistance of trial counsel, there is a reasonable probability
    that the result of the post-conviction proceedings would have
    been different.
    *
    This summary constitutes no part of the opinion of the court. It has
    been prepared by court staff for the convenience of the reader.
    RAMIREZ V. RYAN                        3
    The panel held that the district court erred in denying
    Ramirez evidentiary development of his ineffective assistance
    of counsel claim, and that on remand he is entitled to
    evidentiary development to litigate the merits of his
    ineffective assistance of trial counsel claim.
    The panel held that the district court correctly concluded
    that Ramirez’s due process rights under Ake v. Oklahoma,
    
    470 U.S. 68
     (1985), were not violated, as Ramirez received
    the assistance of an independent psychologist, and there was
    no impermissible waiver of self-representation.
    The panel held that the Arizona state courts did not
    unconstitutionally apply a causal nexus requirement to
    Ramirez’s mitigating evidence in violation of McKinney v.
    Ryan, 
    813 F.3d 798
     (9th Cir. 2015).
    The panel declined to expand the certificate of
    appealability to include three uncertified issues.
    Dissenting in part, Judge Berzon would grant a certificate
    of appealability with regard to Ramirez’s claim under Atkins
    v. Virginia, 
    536 U.S. 304
     (2002) (prohibiting the execution of
    intellectually disabled persons); hold that the claim relates
    back to Ramirez’s ineffective assistance of counsel claim;
    and remand to the district court for further proceedings.
    COUNSEL
    Paula K. Harms (argued) and Timothy M. Gabrielsen,
    Assistant Federal Public Defenders; Jon M. Sands, Federal
    Public Defender; Office of the Federal Public Defender,
    Phoenix, Arizona; for Petitioner-Appellant.
    4                        RAMIREZ V. RYAN
    John P. Todd (argued), Special Assistant Attorney General;
    Lacey Stover Gard, Chief Counsel; Mark Brnovich, Attorney
    General; Office of the Attorney General, Phoenix, Arizona;
    for Respondent-Appellee.
    OPINION
    THOMAS, Chief Judge:
    David Ramirez was convicted by a jury and sentenced to
    death by a judge for the 1989 murders of his girlfriend, Mary
    Ann Gortarez and her daughter, Candie. Ramirez appeals the
    district court’s denial of his petition for writ of habeas corpus,
    raising three certified claims and three uncertified claims.
    Because Ramirez demonstrated cause and prejudice to
    overcome the procedural default of his ineffective assistance
    of trial counsel claim, we reverse the judgment of the district
    court and remand for the district court to allow evidentiary
    development of Ramirez’s ineffective assistance of trial
    counsel claim.
    We affirm the district court’s conclusion that Ramirez’s
    right to due process under Ake v. Oklahoma, 
    470 U.S. 68
    (1985), was not violated. We also agree that the Arizona
    state courts did not improperly exclude mitigating evidence
    that lacked a causal connection to his crime. See McKinney
    v. Ryan, 
    813 F.3d 798
     (9th Cir. 2015).1 We decline to expand
    1
    After briefing and oral argument of this appeal, the United States
    Supreme Court granted certiorari in McKinney v. Arizona, No. 18-1109,
    ___ U.S. ___ , 
    2019 WL 936074
     (June 10, 2019), to address resentencing
    after a capital sentence is vacated due to a causal nexus error. Ramirez
    filed a motion for a stay pending the outcome of that case. Ramirez’s
    RAMIREZ V. RYAN                               5
    the certificate of appealability to include the three uncertified
    issues raised by Ramirez.
    I
    The central question in this appeal is whether the
    procedural default of Ramirez’s claim of ineffective
    assistance of trial counsel is excused under Martinez v. Ryan,
    
    566 U.S. 1
     (2012). Because post conviction counsel, whom
    Arizona concedes performed deficiently, failed to raise a
    substantial claim of ineffective assistance of trial counsel in
    Ramirez’s initial state collateral proceeding, we conclude that
    the procedural default is excused. Ramirez has an ineffective
    assistance of counsel claim “that has some merit” under
    Martinez, 
    566 U.S. at
    14–16, because trial counsel failed to
    present or pursue evidence of Ramirez’s intellectual
    disability, failed to provide relevant and potentially
    mitigating evidence to the psychologist who evaluated
    Ramirez, and subsequently relied on the psychologist’s
    report, despite possessing contrary facts.
    A
    In the early morning hours of May 25, 1989, neighbors
    alerted the police after hearing screams and thuds coming
    from the Gortarez apartment.2 Officers arrived and observed
    motion is DENIED. Because we conclude that the Arizona state courts
    did not apply an unconstitutional causal nexus requirement to Ramirez’s
    mitigating evidence, no resentencing is required.
    2
    Facts regarding the underlying murders are extensively discussed in
    the Arizona Supreme Court case affirming Ramirez’s convictions on
    direct appeal. State v. Ramirez, 
    871 P.2d 237
     (Ariz. 1994) (en banc).
    6                        RAMIREZ V. RYAN
    Ramirez, who appeared to be intoxicated, covered in blood.
    Ramirez v. Ryan, No. CV-97-01331-PHX-JAT, 
    2016 WL 4920284
    , at *1 (D. Ariz. Sept. 15, 2016). Officers found
    Candie’s naked body in a bedroom, and Mary Ann’s body on
    the living room floor. 
    Id.
     Both women had been stabbed
    multiple times. 
    Id.
     Ramirez was charged with two counts of
    first degree murder. 
    Id.
    Ramirez was initially represented by counsel, Mara
    Siegel, a Maricopa County public defender.3 This case was
    Siegel’s first capital assignment, and, as she admitted, she
    was unprepared to represent someone “as mentally disturbed”
    as Ramirez. Ramirez, through counsel, filed a pretrial motion
    for appointment of experts, including psychologists and a
    mitigation expert, among others. In the motion, Ramirez
    cited Ake and requested the court pay for an independent
    psychiatric evaluation, a child psychologist, and a mitigation
    expert to assess his sanity at the time of the alleged offense.
    The trial court denied Ramirez’s requests for experts but
    appointed an investigator to assist Ramirez. During a
    subsequent pre-trial motions hearing, the investigator
    explained why a psychologist was important to help
    determine Ramirez’s social upbringing and to collaborate
    with a mitigation specialist. The trial court expressed
    disbelief and confusion at the request for a mitigation
    specialist (“I have never heard of that in a quarter century”)
    and psychiatrist (“I don’t believe I have ever appointed a
    3
    On October 6, 1989, Ramirez requested to represent himself by
    presenting an illegible motion to the court. Ramirez represented himself
    for a time, with Siegel as advisory counsel, until he requested she resume
    representation after jury selection. Siegel represented Ramirez through
    trial and sentencing. Ramirez v. Ryan, 
    2016 WL 4920284
    , at *4.
    RAMIREZ V. RYAN                         7
    psychiatrist in my life”), noting that “I don’t think that the
    defendant in this case deserves any favors from this Court
    because he represents himself. He’s pulling this Court’s leg,
    and I’m not impressed by that at all.” Ultimately, the court
    agreed to appoint a fingerprint expert and serologist to assist
    Ramirez during the guilt phase. No psychologist was
    appointed for the merits trial. The case was transferred to a
    different judge for trial.
    At trial, only one witness was called on behalf of the
    defense. Ramirez did not testify and the jury found him
    guilty of two counts of first-degree murder. State v. Ramirez,
    
    871 P.2d at 239, 242
    .
    B
    After the jury returned the guilty verdicts, the trial court
    appointed a psychologist proposed by Ramirez,
    Dr. McMahon, “to test and evaluate the defendant’s current
    mental health and, if such is deemed appropriate, conduct
    further diagnostic testing and evaluation.” Ramirez v. Ryan,
    
    2016 WL 4920284
    , at *4. Dr. McMahon met with Ramirez
    three times for a total of five hours and reviewed the
    documents trial counsel provided. Trial counsel provided
    Dr. McMahon with police reports, plea agreements from prior
    charges, the public defender’s notes from an interview with
    Ramirez, and sentencing orders from two other convictions
    of burglary and theft. However, trial counsel did not provide
    Dr. McMahon with Ramirez’s school records or IQ scores.
    Ultimately, trial counsel’s case for mitigation consisted of a
    sentencing memorandum with attachments, and testimony
    from three of Ramirez’s family members and two Arizona
    Department of Corrections employees who previously
    supervised Ramirez. 
    Id.
     at *5–8.
    8                    RAMIREZ V. RYAN
    1
    The sentencing memorandum highlighted Ramirez’s
    ability to adapt in the structured life of prison. 
    Id.
     at *5–6.
    The sentencing memorandum also discussed Ramirez’s
    chaotic childhood, school attendance, history of substance
    abuse and sexual abuse, gang affiliation, and impaired state
    of mind at the time of the murders. 
    Id.
     It also discussed
    Ramirez’s life in prison and early involvement with the
    criminal justice system. Dr. McMahon’s report, which was
    attached to the sentencing memorandum, detailed Ramirez’s
    prior aggravated assault conviction and his work and prison
    history.
    The sentencing memorandum asserted that Ramirez’s
    ability to appreciate the wrongfulness of his conduct was
    substantially impaired, a statutory mitigating circumstance.
    Ramirez reported to Dr. McMahon that he had consumed
    approximately twelve drinks and shot up with cocaine
    multiple times on the evening of the murder, which led
    Dr. McMahon to conclude that Ramirez’s ability to
    appreciate the wrongfulness of his conduct or conform his
    conduct to the law was significantly diminished due to his
    psychological condition and drug and alcohol intoxication on
    the night of the crimes. 
    Id.
     at *4–5.
    The sentencing memorandum indicated that Ramirez’s
    mother, Maria, was an alcoholic. However, Dr. McMahon’s
    report provided the following contradictory observation: that
    Maria “never worked, devoting her time as a traditional
    Mexican-American mother whose responsibility revolves
    around the home and her children.” The report observed that
    Ramirez’s mother “was always there for [Ramirez] when he
    needed her as he was growing up.” Ramirez told
    RAMIREZ V. RYAN                             9
    Dr. McMahon that several family members had sexually
    abused him, but explained that he did not tell his mother
    about it because he “was fearful she would become extremely
    upset and angry.” In completing his report, Dr. McMahon
    did not interview Ramirez’s family members and relied solely
    on Ramirez’s self-reporting and the records trial counsel
    provided.
    Although the sentencing memorandum noted Ramirez’s
    low IQ scores—70 and 77—trial counsel relied on
    Dr. McMahon’s report to conclude that Ramirez was “now
    well within the average range of intelligence.” Dr. McMahon
    measured Ramirez’s IQ score using the Peabody Picture
    Vocabulary Test (PPVT), reporting that Ramirez scored 94,
    which is “in no way indicative of any form of mental
    retardation.” The sentencing memorandum also noted that
    Ramirez changed schools ten times before seventh grade and
    did not complete high school.4
    2
    During the mitigation hearing, trial counsel subpoenaed
    three of Ramirez’s family members to testify on his behalf:
    his aunt and two younger sisters. Ramirez’s aunt, Erlinda
    Martinez, who was approximately the same age as Ramirez,
    testified that Maria was about sixteen when she gave birth to
    Ramirez. Ramirez’s biological father was not around.
    Erlinda testified that she heard Maria drank while she was
    pregnant. Erlinda stated that Maria would stay out partying
    all night and would disappear for days. Maria was involved
    4
    According to trial counsel, she contacted Ramirez’s schools but
    many of Ramirez’s school and psychological records were destroyed per
    state policy, so she was unable to provide additional records.
    10                     RAMIREZ V. RYAN
    with “a lot of men.” She also testified that Maria would make
    Ramirez cook for his siblings and clean the house because
    Maria “wasn’t home watching over the kids, the way a
    mother should.” Ramirez’s grandmother raised Ramirez for
    a couple of years. Erlinda also stated that Ramirez had
    behavioral problems as a child.
    Mary Castillo, Ramirez’s younger sister, testified that
    Ramirez was very affectionate, and helped to keep his
    siblings clothed and fed, but that Maria “was there for us
    too.”5 Mary testified that Maria did not have a drinking
    problem until later in life. She could not recall where
    Ramirez went to school or whether he changed schools
    frequently.
    Cynthia Orozco, another of Ramirez’s younger sisters,
    testified that Ramirez was a good brother who supported his
    wife and son. Ramirez was older than Cynthia, and Cynthia
    testified that they were “hardly together” when they were
    younger. She testified she did not have many memories
    before she was nine years old (when Ramirez would have
    been about fifteen years old). In the year before the crime,
    Ramirez lived with her, helped her out with chores, and gave
    her money every week.
    Two Department of Corrections employees who had
    supervised Ramirez in the prison kitchen testified about
    Ramirez’s job duties in prison and said that Ramirez was a
    good worker.
    5
    Declarations from Ramirez’s family members later revealed that
    Mary Castillo was “also very slow” and could not read or write.
    RAMIREZ V. RYAN                     11
    3
    The sentencing judge found three aggravating
    circumstances: Ramirez had two prior violent felony
    convictions; the murders were committed in an especially
    cruel, heinous, or depraved manner; and he committed
    multiple murders at the same time. State v. Ramirez,
    
    871 P.2d at 242
    .
    The judge found the following statutory mitigating
    circumstance, that Ramirez’s “capacity to appreciate the
    wrongfulness of his conduct or conform his conduct to the
    requirements of the law was significantly impaired.” 
    Id.
     The
    judge also found the following non-statutory mitigating
    circumstances:
    (1) his unstable family background,
    (2) his poor educational experience,
    (3) that he was a victim of sexual abuse while
    he was young,
    (4) his gang affiliation,
    (5) his chronic substance abuse,
    (6) his psychological history, and,
    (7) his love of family.
    
    Id.
    12                    RAMIREZ V. RYAN
    The judge sentenced Ramirez to death on both counts. 
    Id. at 239
    . On direct appeal, the Arizona Supreme Court
    affirmed Ramirez’s convictions and sentence. 
    Id. at 239
    .
    The Arizona Supreme Court independently reviewed
    Ramirez’s death sentence, affirming the trial court’s
    assessment of aggravating and mitigating circumstances and
    imposition of the death sentence. The United States Supreme
    Court denied certiorari. Ramirez v. Arizona, 
    513 U.S. 968
    (1994).
    C
    Ramirez filed his initial petition for post-conviction relief
    in state court, which was denied in its entirety in 1996. The
    Arizona Supreme Court summarily denied Ramirez’s petition
    for review. Ramirez’s post-conviction counsel did not raise
    the ineffective assistance of trial counsel claim before us now
    in the initial petition. Arizona concedes that post-conviction
    counsel in the initial collateral review proceeding performed
    deficiently.
    In 1997, Ramirez filed a petition for habeas relief with the
    federal district court. The district court later substituted the
    Federal Public Defender (FPD) for the previous habeas
    counsel, “due to concerns regarding the quality of
    representation.” Because of the substitution and its reason,
    the district court allowed Ramirez to amend his petition. The
    district court initially allowed Ramirez to add the current
    ineffective assistance of trial counsel claim, finding it related
    back to the original petition. But the court ultimately
    concluded that the claim had been procedurally defaulted by
    an independent and adequate state bar, and that the procedural
    RAMIREZ V. RYAN                              13
    default was not excused.6 Martinez Ramirez v. Ryan, No.
    CV-97-1331-PHX-JAT, 
    2010 WL 3854792
     (D. Ariz. Sept.
    28, 2010) (pre-Martinez procedural default not excused);
    Martinez Ramirez v. Schriro, No. CV 97-1331-PHX-JAT,
    
    2007 WL 864415
    , *11 (D. Ariz. March 20, 2007) (order
    granting leave to amend).
    While Ramirez’s appeal was pending in this court, the
    Supreme Court decided Martinez, which held: “a procedural
    default will not bar a federal habeas court from hearing a
    substantial claim of ineffective assistance at trial if, in the
    initial-review collateral proceeding, there was no counsel or
    counsel in that proceeding was ineffective.” 566 U.S. 1at 17.
    In light of Martinez, we remanded for reconsideration of
    whether post-conviction counsel’s ineffectiveness constituted
    cause to overcome the procedural default of Ramirez’s claim
    of trial counsel’s ineffectiveness. Ramirez v. Ryan, 
    2016 WL 4920284
    , at *1. The district court ordered supplemental
    briefing, and Ramirez submitted evidence, including
    declarations not submitted earlier, to support his request to
    excuse the procedural default. Id. at *4, 8.
    The new declarations submitted by Ramirez’s family
    members, who were not contacted by trial counsel, reveal the
    extent of abuse, poverty, and neglect that Ramirez suffered as
    6
    The current ineffective assistance of counsel claim was initially
    raised by private pro bono counsel in a successive state habeas petition
    because the FPD’s appointment was for the limited purpose of litigating
    Ramirez’s claim under Atkins v. Virginia, 
    536 U.S. 304
     (2002)
    (categorically prohibiting the execution of persons with an intellectual
    disability). The current ineffective assistance of trial counsel claim was
    summarily denied because Arizona law requires that ineffective assistance
    of counsel be raised at the initial collateral review proceeding.
    14                   RAMIREZ V. RYAN
    a child. Ramirez’s step-father, three of Ramirez’s maternal
    aunts, an aunt’s ex-husband, and two of Ramirez’s uncles
    submitted declarations. The information in these declarations
    contrasted with the information revealed at sentencing.
    Several of the new declarations were from family members
    who had first hand knowledge of the abuse and neglect
    Ramirez suffered, and several actually lived with or cared for
    Ramirez. Ramirez lived with his step-father for seven years.
    Ramirez’s maternal aunt, Eloise Arce, and her husband,
    William Laubner, Jr., cared for Ramirez for over a year.
    In contrast, the testimony presented by two of Ramirez’s
    younger sisters during the mitigation hearing relayed no
    information about Ramirez’s early years, although they both
    testified to Ramirez’s good nature. Mary Castillo, who has a
    learning disability herself, contradicted the report that her
    mother had a drinking problem early in her life. Cynthia
    Orozco testified that she and Ramirez were “hardly together”
    when they were younger and that she did not have many
    memories before she was nine years old (when Ramirez
    would have been fifteen). Ramirez’s aunt, Erlinda, did testify
    to red flags, including hearing that Maria drank while
    pregnant and had “many male friends.” However, the
    testimony of Ramirez’s younger sisters seemed to conflict
    with her account.
    In the new declarations, Ramirez’s family members stated
    they would have been willing to testify but were never
    contacted by trial counsel. The declarations reveal that
    Ramirez was born to a poor migrant worker family. Family
    members noted their continual exposure to pesticides in the
    fields where they worked. His mother, Maria, became
    pregnant with Ramirez after her brother-in-law raped her.
    Maria was an alcoholic and drug user who drank during her
    RAMIREZ V. RYAN                       15
    pregnancy, and she attempted to abort the fetus by ingesting
    herbs and jumping off of the counter.
    Things did not improve after Ramirez was born. Maria
    did not nurture or show love to Ramirez, and Ramirez was
    often “shuttled around,” between various family members,
    even as an infant, because “[n]obody wanted him.” Eloise,
    who cared for Ramirez for over a year when he was an infant,
    concluded that “no mother/child bond was ever formed
    between [Ramirez and Maria].” Maria told a family member
    that she would put beer in Ramirez’s bottle “when he was just
    a few years old.” Family members recalled that Ramirez and
    his siblings went hungry, not eating for days while Maria was
    out drinking and partying. Ramirez was forced to steal food
    to feed himself. Maria and her children moved frequently,
    finding whatever “shack” she could, and the homes were
    always “filthy,” with animal feces on the floor. Ramirez and
    his siblings would eat on the floor, where they also slept on
    dirty mattresses.
    Family members also recalled seeing Maria physically
    abuse Ramirez, hitting him with “anything she could get her
    hands on, including electrical cords and shoes.” Family
    members testified that Maria solicited men for sex in bars and
    allowed men to have sex with her daughter to support her
    drug and alcohol habit. Maria had an infant who died from
    exposure after being left in the house without heat in the
    winter at night while Maria went out partying; Ramirez was
    in the house asleep at the time.
    In addition to the physical abuse and neglect, family
    members testified to Ramirez’s apparent developmental
    delays, which included delayed walking, potty training, and
    speech; not being able to read; and “slow” or odd behavior.
    16                   RAMIREZ V. RYAN
    Family members recalled Ramirez could not take care of
    himself at a basic level: he had poor hygiene, did not know
    how to comb his hair, and he ate with his hands because he
    could not use utensils properly.
    During post-conviction proceedings, trial counsel also
    submitted a declaration, acknowledging that Ramirez’s trial
    was her first capital case and that she had no previous capital
    experience. She also represented Ramirez by herself. In her
    declaration, she noted she was not prepared to handle “the
    representation of someone as mentally disturbed as David
    Ramirez,” and she also acknowledged that she “did not fully
    understand his limitations,” which prevented her from
    “explain[ing] David’s situation to him on a level that he could
    fully comprehend.” She noted that “[t]he mitigating
    information that we did present was very limited,” and
    remarked that had she had the information later presented by
    Ramirez’s family members with first hand knowledge of his
    childhood, it “would have changed the way I handled both
    David’s guilt phase and his sentencing phase.” He also stated
    she “had no strategic reason for not presenting all the
    mitigation information available.”
    Dr. McMahon also submitted a declaration, indicating
    that he did not receive Ramirez’s IQ scores or school reports.
    According to Dr. McMahon, had he been provided with
    Ramirez’s school records and IQ scores, he “would have
    insisted on obtaining information about Mr. Ramirez’s
    adaptive behavior.” He also stated that he would not have
    administered the PPVT IQ test, which is not a comprehensive
    IQ test, but rather “would have given Mr. Ramirez a
    comprehensive IQ test.” In addition, Dr. McMahon would
    not have concluded that Ramirez was not intellectually
    disabled, because the scores of 70 and 77 on the “more
    RAMIREZ V. RYAN                         17
    comprehensive WISC IQ test[,] . . . would have indicated to
    me that Mr. Ramirez may be retarded and it would have
    greatly expanded the nature of the evaluation I did conduct.”
    Again, the district court determined that Ramirez’s claim
    of ineffective assistance of trial counsel was procedurally
    barred and denied Ramirez’s request for evidentiary
    development. The district court did not, however, analyze
    whether Ramirez had demonstrated cause and prejudice under
    Martinez, but instead based its decision on whether Ramirez’s
    underlying ineffective assistance of counsel claim would
    ultimately succeed on the merits. Ramirez v. Ryan, 
    2016 WL 4920284
    , at *4. The district court concluded that “Ramirez
    ha[d] not shown that Siegel’s performance at sentencing fell
    below an objective standard of reasonableness.” Id. at *9.
    The district court also found that “[e]ven if [trial counsel’s]
    performance was deficient, Ramirez cannot show prejudice.”
    Id. at *11.
    The district court issued a certificate of appealability for
    the procedural default of Ramirez’s ineffective assistance of
    trial claim, concluding that “reasonable jurists could debate
    the conclusion that [the ineffective assistance of counsel
    claim] is procedurally barred.” Id. at *13.
    On appeal, Ramirez raises three certified claims: that
    (1) the procedural bar of his ineffective trial counsel claim is
    excused under Martinez, (2) his due process rights under Ake
    were violated when the trial court denied his request for
    mental health experts, and (3) the Arizona state courts applied
    an unconstitutional causal nexus requirement to exclude his
    mitigation evidence.
    18                    RAMIREZ V. RYAN
    II
    We review the denial of habeas relief de novo. Lopez v.
    Schriro, 
    491 F.3d 1029
    , 1036 (9th Cir. 2007). Ramirez’s
    certified claims are not subject to the deferential review of
    
    28 U.S.C. § 2254
    (d) because the state court did not address
    these claims on the merits. Ramirez v. Schriro, No. CV 97-
    1331-PXH-JAT, 
    2008 WL 5220936
    , at *14 n.10 (D. Ariz.
    Dec. 12, 2008); see 
    28 U.S.C. § 2254
    (d).
    A federal court is precluded from reviewing a claim that
    has been barred by an independent state procedural rule.
    Martinez, 
    566 U.S. at 9
    . When a petitioner has procedurally
    defaulted a claim, “federal habeas review of the claims is
    barred unless the prisoner can demonstrate cause for the
    default and actual prejudice as a result of the alleged violation
    of federal law.” Coleman v. Thompson, 
    501 U.S. 722
    , 750
    (1991). Generally, post-conviction counsel’s ineffectiveness
    does not qualify as cause to excuse a procedural default. 
    Id.
    at 754–55. However, in Martinez, the Supreme Court
    announced a narrow set of circumstances under which a
    petitioner can establish cause. 
    566 U.S. at 17
    . Under
    Martinez, the procedural default of a substantial claim of
    ineffective assistance of trial counsel is excused if state law
    requires that all claims be brought in the initial collateral
    review proceeding, as Arizona law does, and if in that
    proceeding there was no counsel or counsel was ineffective.
    
    Id.
    Thus, to establish “cause” under Martinez—the first part
    of establishing “cause and prejudice” to excuse a procedural
    default—Ramirez must demonstrate that post-conviction
    counsel was ineffective under Strickland v. Washington,
    
    466 U.S. 668
     (1984). Clabourne v. Ryan, 
    745 F.3d 362
    , 377
    RAMIREZ V. RYAN                          19
    (9th Cir. 2014), overruled on other grounds by McKinney,
    813 F.3d at 819. In turn, Strickland requires demonstrating
    “that both (a) post-conviction counsel’s performance was
    deficient, and (b) there was a reasonable probability that,
    absent the deficient performance, the result of the post-
    conviction proceedings would have been different.” Id.
    (citation omitted). Determining whether there was a
    reasonable probability that the result of the post-conviction
    proceedings would be different “is necessarily connected to
    the strength of the argument that trial counsel’s assistance
    was ineffective.” Id.
    To establish “prejudice” under Martinez’s second prong
    of the “cause and prejudice” analysis, Ramirez must
    demonstrate that his underlying ineffective assistance of trial
    counsel claim is “substantial.” Id. In Martinez, the Supreme
    Court defined substantial to be a “claim that has some merit,”
    and explained the procedural default of a claim will not be
    excused if the ineffective assistance of counsel claim “is
    insubstantial, i.e., it does not have any merit or [ ] it is wholly
    without factual support.” Martinez, 
    566 U.S. at
    14–16.
    The Supreme Court provided no further definition of
    substantial, but cited the standard for issuing a certificate of
    appealability as analogous support for whether a claim is
    substantial. Martinez, 
    566 U.S. at
    14 (citing Miller-El v.
    Cockrell, 
    537 U.S. 322
     (2003)). Using the standard for
    issuing a certificate of appealability, for a claim to be
    substantial a petitioner must show “that reasonable jurists
    could debate whether the issue should have been resolved in
    a different manner or that the claim was adequate to deserve
    encouragement.” Apelt v. Ryan, 
    878 F.3d 800
    , 828 (9th Cir.
    2017) (quotations omitted). “A court should conduct a
    ‘general assessment of the[ ] merits,’ but should not decline
    20                    RAMIREZ V. RYAN
    to issue a certificate ‘merely because it believes the applicant
    will not demonstrate an entitlement to relief.’” Cook v. Ryan,
    
    688 F.3d 598
    , 610 n.13 (9th Cir. 2012) (alteration in original)
    (quoting Miller-El, 
    537 U.S. at
    336–37)).
    The analysis of whether both cause and prejudice are
    established under Martinez will necessarily overlap, “since
    each considers the strength and validity of the underlying
    ineffective assistance claim.” Djerf v. Ryan, No. 08-99027,
    ___ F.3d ___, 
    2019 WL 3311147
    , at *6 (9th Cir. July 24,
    2019).     However, the requirements remain distinct.
    Clabourne, 745 F.3d at 377 (a finding of “‘prejudice’ for
    purposes of the ‘cause and prejudice’ analysis which requires
    only a showing that the trial-level ineffective assistance of
    counsel claim was ‘substantial’—does not diminish the
    requirement. . . that petitioner satisfy the ‘prejudice’ prong
    under Strickland in establishing ineffective assistance by
    post-conviction counsel”).
    Thus, to establish cause and prejudice in order to excuse
    the procedural default of his ineffective assistance of trial
    counsel claim, Ramirez must demonstrate the following:
    (1) post-conviction counsel performed deficiently; (2) “there
    was a reasonable probability that, absent the deficient
    performance, the result of the post-conviction proceedings
    would have been different,” Id.; and (3) 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
    .
    III
    Ramirez has demonstrated both cause and prejudice under
    Martinez to excuse the procedural default of his ineffective
    RAMIREZ V. RYAN                               21
    assistance of trial counsel claim. We do not draw a
    conclusion regarding the ultimate success of his ineffective
    assistance of trial counsel claim. Rather, we remand for
    Ramirez to pursue evidentiary development of that claim in
    the district court.
    Whether post-conviction counsel’s performance was
    deficient turns on the strength and substantiality of Ramirez’s
    trial counsel ineffective assistance of counsel claim. We
    therefore first address whether Ramirez’s underlying
    ineffective assistance of trial counsel claim is substantial, i.e.,
    whether Ramirez can establish prejudice under Martinez.
    Then we evaluate post-conviction counsel’s performance
    under Strickland to determine whether Ramirez has
    established cause under Martinez.
    A
    The district court erred by conducting a full merits review
    of Ramirez’s underlying ineffective assistance of trial counsel
    claim on an undeveloped record. The district court skipped
    to a conclusion on the merits of the ineffective assistance of
    trial counsel claim, thereby holding Ramirez to a higher
    burden than required in the Martinez procedural default
    context.7 The district court concluded that “Ramirez has not
    7
    The district court collapsed what should have been a two-step
    process: first, decide whether the procedural default is excused, and if so,
    then address the claim squarely, after allowing a chance for any necessary
    record or evidentiary development. Had the district court found the
    procedural default excused, even implicitly, then reached the merits of the
    claim on a properly developed record, this case may have been different.
    See Apelt v. Ryan, 
    878 F.3d 800
    , 824 (9th Cir. 2017) (concluding “that the
    district court implicitly determined that Apelt met the cause and prejudice
    standard set forth in Coleman v. Thompson, and thus could address the
    22                       RAMIREZ V. RYAN
    shown that Siegel’s performance at sentencing fell below an
    objective standard of reasonableness.” Ramirez v. Ryan,
    
    2016 WL 4920284
    , at *9. The district court also concluded
    that “even if Siegel’s performance were deficient, Ramirez
    cannot show prejudice.” Id. at *11. Ramirez was not,
    however, required to demonstrate the ultimate success of his
    underlying ineffective assistance of counsel claim, but rather
    whether he had established cause and prejudice under
    Martinez.
    Indeed, the district court did not address whether the
    claim was “substantial” at all and failed to evaluate post-
    conviction counsel’s performance under Strickland except to
    refute, in a footnote, Ramirez’s contention that the court had
    already determined that post-conviction counsel performed
    deficiently. Id. at *3 n.1.
    The district court issued a certificate of appealability for
    the procedural default of Ramirez’s ineffective assistance of
    counsel claim, finding that “reasonable jurists could debate
    the conclusion that [the ineffective assistance of counsel
    claim] is procedurally barred.” Id. at *13.
    B
    We now turn to a de novo review of whether Ramirez has
    demonstrated that his claim of ineffective assistance of trial
    counsel is substantial, thus constituting “prejudice” under
    Martinez. Ramirez asserts that his claim of ineffective
    merits of Apelt’s IAC claims” (internal citation omitted)). However, the
    district court explicitly held that the procedural default was not excused
    based on its conclusion that Ramirez’s ineffective assistance of trial
    counsel claim failed on the merits.
    RAMIREZ V. RYAN                        23
    assistance of trial counsel is substantial because trial counsel
    failed to present evidence of intellectual disability, brain
    damage, and “the myriad mitigating circumstances in his
    background.” We agree.
    1
    To conduct a “general assessment of the merits” of
    Ramirez’s underlying ineffective assistance of trial counsel
    claim, we must examine the Strickland standard. See Cook,
    688 F.3d at 610 & n.13. Under Strickland, a petitioner must
    prove that counsel’s performance fell below an objective
    standard of reasonableness and that the deficiency prejudiced
    the petitioner. 
    466 U.S. at 689
    . An objective standard of
    reasonableness is measured by the “prevailing professional
    norms” at the time of representation. 
    Id. at 688
    . The inquiry
    of counsel’s performance under Strickland is “highly
    deferential,” the court “must indulge a strong presumption
    that counsel’s conduct falls within the wide range of
    reasonable professional assistance,” and “the defendant must
    overcome the presumption that, under the circumstances, the
    challenged action might be considered sound trial strategy.”
    
    Id. at 689
     (quotations omitted).
    The professional norms when Ramirez was sentenced
    placed an affirmative duty on counsel “to investigate,
    develop, and present mitigation evidence during penalty
    phase proceedings.” Summerlin v. Schriro, 
    427 F.3d 623
    , 630
    (9th Cir. 2005) (en banc) (discussing prevailing professional
    norms during the 1980s). During capital penalty proceedings,
    “[t]he duty to investigate is critically important.” 
    Id.
    “Although we must defer to a lawyer’s strategic trial choices,
    those choices must have been made after counsel has
    conducted reasonable investigations or made a reasonable
    24                    RAMIREZ V. RYAN
    decision that makes particular investigations unnecessary.”
    
    Id.
     (internal quotations and citation omitted).
    There is a “belief, long held by this society, that
    defendants who commit criminal acts that are attributable to
    a disadvantaged background or to emotional and mental
    problems, may be less culpable than defendants who have no
    such excuse.” Boyde v. California, 
    494 U.S. 370
    , 382 (1990)
    (quotations omitted; emphasis in original). Because of this
    shared belief, “it is imperative that all relevant mitigating
    information be unearthed for consideration at the capital
    sentencing phase.” Summerlin, 
    427 F.3d at 630
     (alterations
    and quotations omitted). An investigation should include
    “inquiries into social background and evidence of family
    abuse.” 
    Id.
     Counsel must also probe for evidence of mental
    impairment and “examine the defendant’s physical health
    history, particularly for evidence of potential organic brain
    damage and other disorders.” 
    Id.
    2
    We first assess trial counsel’s performance under the first
    prong of Strickland to determine whether Ramirez’s claim is
    substantial. Ramirez has presented a substantial claim that
    trial counsel performed deficiently because she failed to
    pursue or present evidence that Ramirez was intellectually
    disabled; failed to provide potentially powerful mitigating
    evidence to Dr. McMahon; and subsequently relied on
    Dr. McMahon’s report, despite possessing conflicting facts.
    We recognize that this is not a case where counsel failed to
    present any mitigating evidence. However, her failure to
    present or pursue evidence that, if considered, could have
    made a difference in the outcome of Ramirez’s trial, is
    substantial, particularly given that our review is de novo and
    RAMIREZ V. RYAN                          25
    unconstrained by the strictures of 
    28 U.S.C. § 2254
    (d). Thus,
    Ramirez’s ineffective assistance of trial counsel claim was at
    least a substantial one within the meaning of Martinez.
    For example, trial counsel had evidence demonstrating
    that Ramirez may have been intellectually disabled. She
    knew he scored 70 and 77 on IQ scores in school, was three
    to four grades behind his peers, switched schools ten times
    before completing seventh grade, and never graduated from
    high school. Ramirez v. Ryan, 
    2016 WL 4929284
    , at *5. As
    she later revealed, her own interactions with Ramirez raised
    concerns about his intellectual functioning and ability to
    understand his situation. Trial counsel had no capital
    experience and had not even observed a capital trial or
    sentencing. She admitted she was unprepared to represent
    “someone as mentally disturbed as David Ramirez, especially
    in a capital case.”
    Despite possessing these facts, trial counsel failed to
    investigate further or present a claim of mental impairment,
    and instead relied on Dr. McMahon’s conclusion that
    Ramirez was “well within the average range of intelligence.”
    “We have repeatedly held that counsel may render
    ineffective assistance if he is on notice that his client may be
    mentally impaired, yet fails to investigate his client’s mental
    condition as a mitigating factor in a penalty phase hearing.”
    Caro v. Woodford, 
    280 F.3d 1247
    , 1254 (9th Cir. 2002)
    (quotations omitted). Here, inexplicably, trial counsel did not
    provide Ramirez’s IQ scores or the school records she did
    have to Dr. McMahon. While it is generally reasonable to
    rely on an expert opinion, particularly where Ramirez
    requested the expert, it is not reasonable to fail to provide that
    expert with the critical information that would inform the
    26                   RAMIREZ V. RYAN
    tenor and type of evaluation administered. 
    Id.
     (“[C]ounsel’s
    failure to investigate and provide appropriate experts with the
    information necessary to evaluate Caro’s neurological system
    for mitigation constituted deficient performance under
    Strickland.”). Dr. McMahon’s conclusion that Ramirez was
    “well within the average range of intelligence” could well
    have been different had he had knowledge of Ramirez’s poor
    school records and attendance, his low IQ scores, his
    exposure to alcohol, and trial counsel’s interactions with
    Ramirez, as Dr. McMahon’s later declaration attests.
    Trial counsel provided Dr. McMahon with police reports,
    plea agreements, notes from an interview, and sentencing
    orders. The fact that she presented Dr. McMahon with
    certain information, but failed to provide the records that
    could lead to potentially powerful mitigating evidence, is
    unreasonable and supports a substantial claim of deficient
    performance. See Clabourne, 745 F.3d at 383 (concluding
    that petitioner’s counsel was ineffective during capital
    sentencing based on three grounds, including for “fail[ing] to
    provide any mental health expert with health records
    sufficient to develop an accurate psychological profile of
    [petitioner].”).
    Trial counsel also possessed facts regarding Ramirez’s
    upbringing that contradicted the conclusions and observations
    in Dr. McMahon’s report. The report concluded that Maria
    “devot[ed] her time as a traditional Mexican-American
    mother whose responsibility revolved around the home and
    her children,” and that Maria “was always there” for Ramirez
    “as he was growing up.” As additional mitigating testimony
    from family members who lived with and cared for Ramirez
    later revealed, Dr. McMahon’s description of Maria’s
    relationship with Ramirez could not be farther from the truth.
    RAMIREZ V. RYAN                       27
    Maria physically abused Ramirez, who was repeatedly
    shuttled around family members’ homes because he was not
    wanted. Ramirez and his siblings were neglected and left
    alone for days on end, living in “filthy” conditions. They
    were often hungry. Ramirez witnessed significant violence
    at home. Ramirez evidenced significant developmental
    delays and attended school sporadically, not finishing high
    school.
    Despite counsel’s affirmative duty to “conduct sufficient
    investigation and engage in sufficient preparation to be able
    to present and explain the significance of all the available
    mitigating evidence,” the misleading conclusions and
    observations in Dr. McMahon’s report were left unchallenged
    and unexplained. See Mayfield v. Woodford, 
    270 F.3d 915
    ,
    927 (9th Cir. 2001) (en banc) (quotations and alterations
    omitted) (quoting Williams v. Taylor, 
    529 U.S. 362
    , 399
    (2000)).
    Trial counsel had a duty to investigate and pursue
    mitigating evidence, especially where “tantalizing indications
    in the record suggest[ed] that certain mitigating evidence may
    be available.” Lambright v. Schriro, 
    490 F.3d 1103
    , 1117 (9th
    Cir. 2007) (quotations omitted). Given trial counsel’s
    knowledge of Ramirez’s poor school records and attendance,
    his low IQ scores, her own interactions with Ramirez, his
    exposure to alcohol, and the red flags in his family’s
    testimony, trial counsel was under an affirmative “duty to
    investigate and present mitigating evidence of mental
    impairment as well as evidence of family abuse.” 
    Id. at 1117
    .
    Ramirez has made out a substantial claim that trial counsel
    performed deficiently.
    28                        RAMIREZ V. RYAN
    3
    Given the deficient performance, we next analyze whether
    Ramirez has demonstrated a substantial claim of prejudice as
    a result of trial counsel’s deficient performance. Under
    Strickland, “[t]o establish ‘prejudice,’ a petitioner ‘must show
    that there is a reasonable probability that, but for counsel’s
    unprofessional errors, the result of the proceeding would have
    been different.’” Sexton v. Cozner, 
    679 F.3d 1150
    , 1159–60
    (9th Cir. 2012). “To assess that probability, we consider the
    totality of the available mitigation evidence—both that
    adduced at trial, and the evidence adduced in the habeas
    proceeding—and reweigh it against the evidence in
    aggravation.” Porter v. McCollum, 
    558 U.S. 30
    , 41 (2009)
    (quotations and alterations omitted).
    First, we address the effect of counsel’s failure to provide
    Dr. McMahon with Ramirez’s IQ scores. Trial counsel’s
    failure to provide accurate and complete records to
    Dr. McMahon support a substantial claim of prejudice to
    Ramirez because the failure led to the presentation of an
    inaccurate and flawed report at sentencing. Although
    Ramirez was sentenced to death before Atkins,8 as the district
    8
    The government argues that the determination that Ramirez was not
    intellectually disabled in the context of his Atkins claim hearings is
    binding here. We disagree. Finding that Ramirez is intellectually disabled
    and thus cannot be executed under Atkins is different than presenting
    mitigating evidence of an intellectual disability. See Doe v. Ayers,
    
    782 F.3d 425
    , 441 (9th Cir. 2015). (“[A]ll potentially mitigating evidence
    is relevant at the sentencing phase of a death case, so a troubled childhood
    and mental problems may help even if they don't rise to a specific,
    technically-defined level.”). Nevertheless, we note that two experts did
    diagnose Ramirez with an intellectual disability in connection with the
    Atkins claim.
    RAMIREZ V. RYAN                        29
    court noted, “in Arizona a ‘slow, dull and brain-damaged’
    mental impairment may have a significant mitigating effect
    as it may evidence an inability of the defendant to control his
    conduct.” Martinez Ramirez v. Ryan, 
    2010 WL 3854792
    , at
    *5. In his declaration, Dr. McMahon remarked that he would
    not have concluded that Ramirez’s score on the PPVT test
    was “in no way indicative of any form of mental retardation”
    had he seen Ramirez’s school record and IQ scores, as
    “[t]hese scores would have indicated to me that Mr. Ramirez
    may be retarded and it would have greatly expanded the
    nature of the evaluation I did conduct.” It also would have
    changed the type of testing that Dr. McMahon administered.
    Dr. McMahon indicated in his declaration that he would not
    have administered the PPVT test, but “would have given
    Mr. Ramirez a comprehensive IQ test[, because] [t]he PPVT
    is not a comprehensive IQ test.” The IQ tests that resulted in
    Ramirez’s lower scores of 70 and 77 were “the more
    comprehensive WISC IQ tests.”
    Second, the mitigating evidence introduced during post-
    conviction proceedings was not all cumulative. We disagree
    that the new mitigating evidence “would barely have altered
    the sentencing profile presented to the sentencing judge.” See
    Strickland, 
    466 U.S. at
    699–700. Viewing the record of
    mitigating evidence available as a whole to the sentencing
    judge and the record of mitigating evidence available now,
    we are persuaded that Ramirez’s claim of prejudice is not
    “wholly without factual support.” See Martinez, 
    566 U.S. at 16
    .
    The mitigation evidence presented during sentencing did
    not consistently or accurately describe the circumstances of
    Ramirez’s life. Dr. McMahon’s report concluded that
    Ramirez was “well within the average range of intelligence,”
    30                    RAMIREZ V. RYAN
    and indicated Maria was a loving mother who was there for
    the children and Ramirez as he was growing up. During the
    mitigation hearing, Ramirez’s family members generally
    testified about Ramirez’s good qualities. The testimony of
    Ramirez’s younger sisters was largely unhelpful: Cynthia did
    not live with Ramirez for much of their childhood and could
    not recall any details of their childhood. Mary testified to a
    relatively normal childhood, although it was later revealed
    that Mary herself faced intellectual challenges.
    Overall, the picture of mitigation presented at sentencing
    is relatively innocuous compared to the details that later
    emerged about Ramirez’s life. The sentencing memorandum
    used by trial counsel highlighted and discussed Ramirez’s
    criminal history, school attendance, substance abuse, and
    ability to adapt in prison. Had the sentencing memorandum
    instead highlighted that Ramirez’s childhood was “filled with
    abuse and privation, or the reality that he was ‘borderline
    mentally retarded,’” there is “a reasonable probability that the
    result of the sentencing proceeding would have been different
    if competent counsel had presented and explained the
    significance of all the available evidence.” See Williams,
    
    529 U.S. at
    398–99 (quotations omitted). The judge did find
    several mitigating factors, and only three aggravating factors.
    Had the evidence of a mental impairment been introduced, as
    well as the evidence of the level of abuse Ramirez suffered,
    there is a substantial claim that the judge “would have struck
    a different balance.” See Porter, 
    558 U.S. at 42
     (quotations
    omitted).
    The mitigating evidence Ramirez has presented is not too
    speculative, irrelevant, or weak to disregard. Cf. Schriro v.
    Landrigan, 
    550 U.S. 465
    , 481 (2007). Neither is it a situation
    where the petitioner is pointing to some unknown and yet to
    RAMIREZ V. RYAN                          31
    be discovered mitigating evidence. Djerf, 
    2019 WL 3311147
    ,
    at *7 (“Djerf has failed to identify any evidence related to his
    childhood that counsel should have, but did not, uncover.”).
    Here, two psychologists diagnosed Ramirez as intellectually
    disabled, with one finding evidence of brain dysfunction.
    Subsequent declarations revealed the extent of the physical
    abuse and extreme neglect that Ramirez suffered,
    corroborated by multiple family members who were not
    contacted by trial counsel.
    In sum, Ramirez has established a substantial claim that
    he was prejudiced by trial counsel’s deficient performance
    under Strickland. Based on the foregoing, and without
    Ramirez receiving the benefit of full evidentiary
    development, we cannot conclude that Ramirez’s ineffective
    assistance of trial counsel claim overall “is insubstantial, i.e.,
    it does not have any merit or [ ] it is wholly without factual
    support.” Martinez, 
    566 U.S. at 16
    . Therefore, Ramirez has
    established prejudice under Martinez.
    C
    We now turn to whether Ramirez has established cause
    under Martinez. We conclude that he has. The government
    concedes that post-conviction counsel’s performance was
    constitutionally deficient, but argues that because trial
    counsel’s performance was not deficient, post-conviction
    counsel’s “failure to raise a successful ineffective assistance
    of trial counsel claim was not prejudicial.” (“[T]here is little
    question that his performance was constitutionally deficient
    under Strickland.”).
    As the foregoing discussion indicates, we conclude that
    Ramirez’s ineffective assistance of trial counsel claim is
    32                    RAMIREZ V. RYAN
    “substantial.” The underlying ineffective assistance of
    counsel claim is strong enough to support a conclusion that,
    had post-conviction counsel performed effectively and raised
    the claim, “there [is] a reasonable probability that, absent the
    deficient performance, the result of the post-conviction
    proceedings would have been different.” See Clabourne,
    745 F.3d at 377.
    The district court clearly saw problems with post-
    conviction counsel’s performance and potential prejudice as
    a result. Although the district court did not conclude that
    post-conviction counsel was deficient under Strickland, the
    court made the following observations while assessing post-
    conviction counsel’s performance in a pre-Martinez context:
    Based on the sentencing record, [post-
    conviction relief (“PCR”)] counsel was on
    notice that Petitioner had two IQ tests
    documenting low intelligence and another test
    demonstrating he was behind his peers in
    educational development. PCR counsel was
    also on notice that the presentence report
    indicated that Petitioner displayed low
    intelligence and emotional immaturity. Even
    though Dr. McMahon reported that Petitioner
    was not mentally retarded, PCR counsel was
    still on notice of the contrast between Dr.
    McMahon’s report and the low IQ scores
    being reported, as well as the mental health
    deficiencies counsel presented as mitigation at
    sentencing. PCR counsel was also on notice of
    his need to investigate mental health because
    in Arizona a “slow, dull and brain-damaged”
    mental impairment may have a significant
    RAMIREZ V. RYAN                         33
    mitigating effect as it may evidence an
    inability of the defendant to control his
    conduct.
    Martinez Ramirez v. Ryan, 
    2010 WL 3854792
    , at *5 (internal
    citations omitted).
    Post-conviction counsel possessed evidence that indicated
    that Ramirez could have an intellectual disability, and knew
    that trial counsel failed to present or pursue evidence of an
    intellectual disability.      Had post-conviction counsel
    performed effectively, by reviewing the record, trial counsel’s
    failure to present evidence of Ramirez’s intellectual disability
    would have readily revealed itself. Also, had post-conviction
    counsel conducted a reasonable investigation into Ramirez’s
    upbringing, taking into account the “red flags” raised at the
    penalty phase hearing, the record of physical abuse and
    neglect Ramirez suffered as a child could have been
    presented in support of the ineffective assistance of trial
    counsel claim. Had post-conviction counsel raised the
    substantial claim of ineffective assistance of trial counsel, for
    failure to pursue and present mitigating evidence of an
    intellectual disability, there is a reasonable probability that
    the result of the post-conviction proceedings would have been
    different.     We therefore conclude that Ramirez has
    established cause under Martinez.
    D
    Finally, the district court erred in denying Ramirez
    evidentiary development of his ineffective assistance of
    counsel claim. Ramirez asserts he should have been given
    the opportunity to present testimony from mental health
    experts, sentencing counsel, prior investigators, a capital
    34                       RAMIREZ V. RYAN
    mitigation expert, and lay witnesses in order to prove his
    ineffective assistance of counsel claim. We agree. Martinez,
    
    566 U.S. at 13
     (“Ineffective-assistance claims often depend
    on evidence outside the trial record.”). Because we now hold
    that Ramirez has established both cause and prejudice to
    excuse the procedural default of his claim, he no longer
    requires evidentiary development to support establishing
    cause and prejudice under Martinez. However, he is entitled
    to evidentiary development to litigate the merits of his
    ineffective assistance of trial counsel claim, as he was
    precluded from such development because of his post-
    conviction counsel’s ineffective representation. See Detrich
    v. Ryan, 
    740 F.3d 1237
    , 1247 (9th Cir. 2013) (en banc).
    IV
    The district court correctly concluded that Ramirez’s
    rights under Ake v. Oklahoma were not violated. 
    470 U.S. 68
    (1985). Ramirez asserts that because the record demonstrated
    that his mental health would be an issue during sentencing,
    due process required the appointment of a mental health
    expert.9 Ramirez also asserts that the district court’s
    interpretation of Ake was erroneous and that the trial court
    forced Ramirez to waive self-representation to obtain a
    mental health expert.
    Under Ake, a defendant is entitled to an independent
    psychological examination to assist in his defense during “a
    capital sentencing proceeding, when the State presents
    psychiatric evidence of the defendant’s future
    9
    Ramirez argued in the district court that he was denied mental health
    experts during the guilt phase of his proceeding; however, he does not
    pursue that claim on appeal.
    RAMIREZ V. RYAN                        35
    dangerousness.” 
    470 U.S. at 83
    . Under our precedent, the
    right to a mental health expert is not limited to when the state
    presents evidence of future dangerousness. Williams v. Ryan,
    
    623 F.3d 1258
    , 1268–69 (9th Cir. 2010) (“[O]ther circuits
    have interpreted Ake to require a state to provide a defendant
    expert psychiatric assistance at sentencing only where the
    state also planned to rely on psychiatric testimony. Yet, we
    have never read Ake so narrowly.”). Indeed, “[w]here the
    mental health of an accused person is genuinely in issue, due
    process requires the opportunity to have an independent
    mental health expert to assist the defense.” Williams v.
    Stewart, 
    441 F.3d 1030
    , 1049 (9th Cir. 2006).
    The district court rejected Ramirez’s Ake claim, noting
    that Ake does not require the appointment of a mitigation
    specialist. Further, the district court found that even under a
    broad reading of Ake, according to the district court, Ramirez
    had not made a showing that his mental health would be a
    significant issue in sentencing. Finally, the district court
    noted that the trial court did appoint a psychologist,
    Dr. McMahon, whose report Ramirez and the trial court
    relied on to find a statutory mitigating circumstance. Ramirez
    v. Schriro, 
    2008 WL 5220936
    , at *16.
    The district court correctly rejected Ramirez’s Ake claim.
    Due process under Ake does not require the appointment of a
    mitigation specialist, so we assess whether Ramirez was
    denied access to an independent psychological evaluation.
    We agree with the district court that even under a broad
    reading of Ake, Ramirez’s claim fails because he did receive
    the assistance of an independent psychologist. Similarly,
    despite the court’s initial incredulity at appointing a
    psychologist and a mitigation specialist, it ultimately
    36                      RAMIREZ V. RYAN
    appointed several experts, so there was no impermissible
    waiver of self-representation.10
    Ramirez asserts that the “subsequent appointment of a
    neutral psychologist is irrelevant.” We disagree. To the
    extent Ramirez is relying on Smith v. McCormick, that case
    is easily distinguishable. 
    914 F.2d 1153
     (9th Cir. 1990). In
    Smith, due process was violated because the court ordered a
    psychiatrist to report directly to the court, so the psychiatrist
    never met with Smith’s counsel and “in no sense assisted in
    the evaluation or preparation of the defense.” 
    Id.
     at 1157–58.
    Here, the trial court appointed Dr. McMahon, a
    psychologist suggested by Ramirez. Although the court
    appointed Dr. McMahon on its own motion and to help the
    court make a decision, ultimately Ramirez, not the state or the
    court, relied on Dr. McMahon’s report. Ramirez did not
    request the appointment of an additional psychologist to rebut
    anything in Dr. McMahon’s report. Additionally, the trial
    court relied on Dr. McMahon’s report to find one statutory
    mitigating factor: that Ramirez lacked the “capacity to
    appreciate the wrongfulness of his conduct or to conform his
    conduct to the requirements of law.” Ramirez’s due process
    rights under Ake were not violated.
    V
    Although we sua sponte expanded the certificate of
    appealability to include the issue of whether the Arizona state
    courts improperly excluded Ramirez’s mitigating evidence
    10
    In addition, the trial judge who expressed incredulity over
    Ramirez’s pre-trial requests for experts did not preside over Ramirez’s
    sentencing because the case was transferred before trial.
    RAMIREZ V. RYAN                       37
    because it was not causally connected to his crime in
    violation of McKinney, we conclude that the Arizona courts
    did not unconstitutionally apply a causal nexus requirement
    to Ramirez’s mitigating evidence.
    Under Lockett v. Ohio, during capital sentencing, the
    sentencing judge should “not be precluded from considering,
    as a mitigating factor, any aspect of a defendant’s character
    or record and any circumstances of the offense that the
    defendant proffers as a basis for a sentence less than death.”
    
    438 U.S. 586
    , 604 (1978). In McKinney, 813 F.3d at 816,
    819, we held that the Arizona Supreme Court was improperly
    excluding nonstatutory mitigating evidence as a matter of
    law, requiring defendants to prove a causal connection
    between the mitigating evidence and the commission of the
    crime, during its review of death sentences in violation of
    Lockett and Eddings v. Oklahoma, 
    455 U.S. 104
     (1982).
    This unconstitutional causal nexus requirement was
    articulated by the Arizona Supreme Court in capital cases
    from the late 1980s until 2005. See State v. Anderson,
    
    111 P.3d 369
    , 391 (Ariz. 2005) (holding that mitigating
    evidence in a capital case cannot be rejected because it lacks
    a causal nexus to the crime); see also McKinney, 813 F.3d
    at 809. During that time period, the Arizona Supreme Court
    case law “forbade as a matter of law giving weight to
    [nonstatutory] mitigating evidence, such as family
    background or mental condition, unless the background or
    mental condition was causally connected to the crime.” Two
    specific cases that enunciated these rules were State v.
    Wallace, 
    773 P.2d 983
     (Ariz. 1989) and State v. Ross,
    
    886 P.2d 1354
     (Ariz. 1994). Id. at 802.
    38                    RAMIREZ V. RYAN
    In McKinney, defendant’s proffered mitigating evidence
    was explicitly rejected by both the Arizona trial court and the
    Arizona Supreme Court: “A difficult family background,
    including childhood abuse, does not necessarily have
    substantial mitigating weight absent a showing that it
    significantly affected or impacted the defendant's ability to
    perceive, comprehend, or control his actions.” State v.
    McKinney, 
    917 P.2d 1214
    , 1227 (Ariz. 1996). The Arizona
    Supreme Court cited Ross, 
    886 P.2d at 1363
    , to support its
    disregard of the mitigating evidence. 
    Id.
    In Apelt, we identified the critical factors that indicated
    whether the Arizona courts during the pertinent time period
    did not apply the unconstitutional causal nexus requirement
    by disregarding mitigating evidence otherwise generally used
    during that period. 878 F.3d at 839–40. In Apelt, we noted
    the following factors: (1) the trial court did not state a factual
    conclusion regarding a causal nexus between the mitigation
    evidence and the defendant’s conduct; (2) the Arizona
    Supreme Court did not state a factual conclusion that any
    proffered mitigation would have “influenced [the defendant]
    not to commit the crime;” and (3) the Arizona Supreme Court
    did not cite either Ross or Wallace when reviewing the
    mitigating evidence. Id.
    Though the Arizona Supreme Court reviewed Ramirez’s
    convictions in 1994, during the period that the Arizona
    Supreme Court was applying a causal nexus requirement, the
    record here indicates that mitigating evidence was not
    rejected as a matter of law. In fact, the record compels the
    opposite conclusion. Importantly, the trial court found non-
    statutory mitigating factors including: “his unstable family
    background,” “his poor educational experience,” “that he was
    a victim of sexual abuse while he was young,” “his chronic
    RAMIREZ V. RYAN                         39
    substance abuse,” “his psychological history,” and “his love
    of family.” At a hearing before Ramirez was sentenced, the
    judge stated, “I have difficulty placing substantial
    significance on the lifestyle that this Defendant experienced,
    although I, obviously, am giving it some weight.”
    The Arizona Supreme Court affirmed all of the mitigating
    circumstances found by the trial court, and neither of the state
    courts excluded any mitigating evidence because it was not
    causally connected to the crime. Ramirez argues that had the
    judge truly considered the mitigating factors, he would not
    have been sentenced to death. What the trial court would
    have decided had it considered all the mitigating evidence
    actually presented at trial–as opposed to the evidence that
    could have been presented had trial counsel not been
    ineffective–is not at all self-evident; it is certainly not proof
    that, despite express attestation to the contrary, no weight was
    given to the mitigating evidence in question.
    Here, as in Apelt, there is no statement from either state
    court that indicates that the state courts refused to consider
    mitigating evidence as a matter of law because it was
    unrelated to the crime. Additionally, the sentencing judge
    expressly indicated that he would give some weight to the
    relevant mitigating factors. Further, neither of the state courts
    cited to Ross or Wallace in reviewing Ramirez’s mitigating
    evidence. We are not prepared to find error where the
    Arizona courts did not articulate an unconstitutional causal
    nexus test to mitigating evidence, did not cite Ross or
    Wallace, found several non-statutory mitigating factors, and
    stated that the non-statutory factors would be given some
    weight.
    40                       RAMIREZ V. RYAN
    VI
    In sum, we reverse the judgment of district court as to the
    procedural default of the ineffective assistance of counsel
    claim, and remand for an evidentiary hearing on that issue.
    We affirm the district court’s denial of Ramirez’s Ake claim
    and reject Ramirez’s McKinney claim. We do not reach the
    remaining uncertified issues.11 See 
    28 U.S.C. § 2253
    (c)(2).
    AFFIRMED in part, REVERSED in part, and
    REMANDED.
    BERZON, Circuit Judge, dissenting in part:
    I concur in the opinion except in one respect: I would
    grant a certificate of appealability with regard to Ramirez’s
    claim under Atkins v. Virginia, 
    536 U.S. 304
     (2002)
    (prohibiting the execution of intellectually disabled persons),
    see Opinion at 40 n.11, hold that the claim does relate back to
    Ramirez’s ineffective assistance of counsel claim, and
    remand to the district court for further proceedings.
    We may grant a certificate of appealability if the
    petitioner makes “a substantial showing of the denial of a
    constitutional right.” 
    28 U.S.C. § 2253
    (c)(2). A petitioner
    makes this substantial showing “by demonstrating that jurists
    11
    One of these uncertified issues that we decline to address is
    Ramirez’s claim under Atkins v. Virginia, 
    536 U.S. 304
    . Ramirez is, of
    course, not precluded from asserting an independent Atkins claim when an
    execution date is set based on his alleged intellectual disability at that
    time.
    RAMIREZ V. RYAN                        41
    of reason could disagree with the district court’s resolution of
    his constitutional claims.” Cain v. Chappell, 
    870 F.3d 1003
    ,
    1015 (9th Cir. 2017). But the district court did not consider
    the merits of Ramirez’s Atkins constitutional claim because
    it concluded that the claim was not timely filed and did not
    relate back to a timely filed habeas claim under Federal Rule
    of Civil Procedure 15. In this circumstance, our inquiry has
    two parts:
    When the district court denies a habeas
    petition on procedural grounds without
    reaching the prisoner’s underlying
    constitutional claim, a [certificate of
    appealability] should issue when the prisoner
    shows, at least, [1] that jurists of reason would
    find it debatable whether the petition states a
    valid claim of the denial of a constitutional
    right and [2] that jurists of reason would find
    it debatable whether the district court was
    correct in its procedural ruling.
    Slack v. McDaniel, 
    529 U.S. 473
    , 484 (2000). Applying this
    standard, a certificate of appealability should issue on the
    relation back issue.
    First, jurists of reason would find it debatable whether
    Ramirez has a valid claim under Atkins. Ramirez is likely not
    entitled to relief under 
    28 U.S.C. § 2254
    (d)(1), as the state
    court decision is probably not contrary to federal law clearly
    established at the time. See Shoop v. Hill, 
    139 S. Ct. 504
    (2019). But Ramirez could possibly prevail on his claim
    under section 2254(d)(2) that the state court unreasonably
    determined the facts in concluding that Ramirez was not
    intellectually disabled. Cf. Brumsfeld v. Cain, 
    135 S. Ct. 42
                           RAMIREZ V. RYAN
    2269, 2278 (2015) (concluding that under section 2254(d)(2)
    the state court unreasonably determined the facts regarding
    petitioner’s Atkins claim).
    Ramirez contends that the state court unreasonably
    determined the facts by, inter alia, relying on certain experts
    it acknowledged did not have the requisite credentials and did
    not administer the proper tests; refusing to take the Flynn
    effect1 into account; and refusing to follow community
    intelligence standards by placing significant weight on
    Ramirez’s adaptive strengths while in prison rather than
    outside a structured environment. Ramirez has raised a
    colorable argument that, by failing to follow the established
    science on intellectual disability, the state court unreasonably
    determined that he was not intellectually disabled.
    Second, I believe it more than debatable that the district
    court erred in its procedural ruling, and that Ramirez’s Atkins
    claim does relate back to his timely filed ineffective
    assistance of counsel claim. A claim relates back under Rule
    15(c) if there is “a common core of operative facts uniting the
    original and newly asserted claims.” Mayle v. Felix, 
    545 U.S. 644
    , 659 (2005). A claim will not relate back “when the new
    claims depend upon events separate in ‘both time and type’”
    from the original relief requested. 
    Id. at 657
    . This “time and
    type” language “refers not to the claims, or grounds for relief.
    Rather, it refers to the facts that support those grounds.” Ha
    Van Nguyen v. Curry, 
    736 F.3d 1287
    , 1297 (9th Cir. 2013)
    1
    “The basic premise of the Flynn effect is that because average IQ
    scores increase over time, a person who takes an IQ test that has not
    recently been normed against a representative sample of the population
    will receive an artificially inflated IQ score.” Smith, 813 F.3d at 1184.
    RAMIREZ V. RYAN                        43
    abrogated on other grounds by Davila v. Davis, 
    137 S. Ct. 2058
     (2017).
    The Atkins claim and the ineffective assistance of trial
    counsel claim we are remanding for consideration on the
    merits share a “common core of operative facts” similar in
    “time and type.” See Mayle, 
    545 U.S. 657
    , 59. The core of
    Ramirez’s ineffective assistance claim is the failure of his
    attorney and the psychological expert to investigate and
    appreciate the facts indicating the severity of Ramirez’s
    mental impairments, principally his intellectual disability.
    Litigating the ineffective assistance of trial counsel claim on
    its merits requires presenting the evidence trial counsel
    should have introduced regarding Ramirez’s mental
    disability. Ramirez’s Atkins claim depends on the same
    facts—what a properly developed record shows concerning
    Ramirez’s cognitive abilities and adaptive behavior.
    The district court held that “[w]hile proof that Petitioner
    is mentally retarded could have been offered as mitigation at
    sentencing and, therefore, is reasonably part of his IAC-at-
    sentencing claim, the Atkins claim is not based on attorney
    error.” This difference indicates that the two are different
    types of claims. But as Ha Van Nyguen clarified, that is not
    the relevant inquiry under Mayle. See 736 F.3d at 1297. (The
    district court’s decision in 2008 was made without the benefit
    of Ha Van Nyguen, a decision published in 2013.) “[F]acts
    that support those grounds” for relief in each claim—
    Ramirez’s actual intellectual disability—are similar—indeed,
    largely identical—in time and type. See id.
    Respondents rely on Schneider v. McDaniel, 
    674 F.3d 1144
     (9th Cir. 2012), to argue that Ramirez’s Atkins claim
    does not relate back. Schneider is inapposite. In Schneider,
    44                    RAMIREZ V. RYAN
    the petitioner argued that his new ineffective assistance of
    counsel claim related back to a previous, different ineffective
    assistance claim because of the common fact of counsel’s
    ineffectiveness. 
    Id. at 1151
    . The substantive part of the two
    claims—that is, what counsel did not do and so was
    ineffective—was entirely different. See 
    id.
     It was this kind of
    partial overlap that Schneider rejected, because it “would
    stand the Supreme Court’s decision in Mayle on its head.” 
    Id.
    Here, in contrast, the new claim that relates back is a merits
    claim, not one of ineffective assistance of counsel. As to that
    merits claim, the overlap with the merits aspect of the
    Ramirez’s ineffective assistance of counsel claim is near
    complete.
    This case is also distinct from one arguing that an
    ineffective assistance of counsel claim relates back to a
    connected merits claim. In United States v. Ciampi, 
    419 F.3d 20
     (1st Cir.2005), for example, petitioner’s ineffective
    assistance of counsel claim was based on his counsel’s failure
    to inform petitioner of his rights before the plea. Ciampi held
    that ineffective assistance claim did not relate back to his
    initial petition alleging a due process violation based on the
    court’s failure to advise the petitioner of the same
    consequences. 
    Id. at 24
    . As the facts of Ciampi illustrate,
    ineffective assistance claims often incorporate both facts
    contained in the trial record and supplemental facts regarding
    the actions (and inactions) of counsel. An ineffective
    assistance claim will factually overlap in some respects with
    a related merits claim, but, as in Ciampi, critical facts outside
    the trial record may not overlap. If those supplemental facts
    are core operative facts of an ineffective assistance claim, the
    claim may not relate back to the underlying merits claim. I
    note that some ineffective assistance claims do relate back to
    the incorporated merits issue. Ha Van Nyguen, 736 F.3d at
    RAMIREZ V. RYAN                        45
    1297, so held, concluding that an ineffective assistance of
    appellate counsel claim for failing to raise a double jeopardy
    claim did relate back because it shared a common core of
    facts with petitioner’s timely filed cruel and unusual
    punishment claim.
    What we have here is the reverse situation from Nyguen:
    the ineffective assistance of trial counsel claim required
    establishing what an effective trial counsel would have done
    regarding the underlying claim—here the penalty phase
    mitigation presentation as it related to Ramirez’s mental
    disability—and whether it was likely to have succeeded; the
    merits claim that is sought to be added to the habeas
    petition—the Atkins claim—concerns the same issue—
    Ramirez’s mental disability. In that circumstance, the relevant
    core facts of the merits claim are necessarily incorporated in
    the ineffective assistance claim, so relation back is
    appropriate. That is the scenario currently before us.
    The central concern of the relation back doctrine as
    applied in Mayle and Nyguen is whether the newly articulated
    claim will require substantial additional factual development.
    Now that the merits portions of the ineffective assistance of
    trial counsel claim concerning the failure to present available
    evidence of Ramirez’s mental disability at the penalty phase
    is going forward, the Aktins claim will not require
    substantially different factual development. Both claims turn
    essentially on whether Ramirez was intellectually disabled at
    the time of trial, and if so, to what degree. The district court
    on remand already must allow evidentiary development
    regarding the merits of Ramirez’s ineffective assistance of
    trial counsel claim with regard to penalty phase mitigating
    evidence for purposes of determining whether trial counsel
    was ineffective. In all likelihood, the evidence presented to
    46                    RAMIREZ V. RYAN
    show what trial counsel should have presented but did not
    will include the very same expert evidence introduced in state
    court in support of the Atkins claim.
    In sum, Ramirez has shown “at least, that jurists of reason
    would find it debatable whether the petition states a valid
    claim of the denial of a constitutional right” under Atkins. See
    Slack, 
    529 U.S. at 484
    . Because jurists of reason would also
    disagree with the district court’s relation back holding,
    Ramirez is entitled to a certificate of appealability on his
    Atkins claim. See 
    id.
    Once a certificate of appealability is granted, we review
    the district court’s denial of Ramirez’s proposed amendment
    for abuse of discretion. Hebner v. McGrath, 
    543 F.3d 1133
    ,
    1136 (9th Cir. 2008). Because the Atkins claim does share a
    “common core of operative facts” with his ineffective
    assistance claim as discussed above, and because the district
    court misapplied the “time and type” language in Mayle, see
    Ha Van Nguyen, 736 F.3d at 1297, I would conclude that
    Ramirez’s Atkins claim does relate back to the timely filed
    habeas petition, and that the district court abused its
    discretion in holding otherwise.