United States v. Riley Briones, Jr. ( 2022 )


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  •                        FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    UNITED STATES OF AMERICA,                      No. 16-10150
    Plaintiff-Appellee,
    D.C. No.
    v.                       2:96-cr-00464-DLR-4
    RILEY BRIONES, JR., AKA
    Unknown Spitz,                             ORDER AND
    Defendant-Appellant.             AMENDED OPINION
    On Remand from the United States Supreme Court
    Argued and Submitted September 22, 2021
    Pasadena, California
    Filed December 6, 2021
    Amended June 1, 2022
    Before: Diarmuid F. O’Scannlain and Johnnie B.
    Rawlinson, Circuit Judges, and David A. Ezra, * District
    Judge.
    Order;
    Opinion by Judge O’Scannlain
    *
    The Honorable David A. Ezra, United States District Judge for the
    District of Hawaii, sitting by designation.
    2                  UNITED STATES V. BRIONES
    SUMMARY **
    Criminal
    The panel filed (1) an order amending its opinion,
    denying a petition for panel rehearing, and denying on behalf
    of the court a petition for rehearing en banc and (2) an
    amended opinion in which, on remand from the United
    States Supreme Court, and further remand from the en banc
    court, the three-judge panel affirmed the district court’s
    imposition of a sentence of life without possibility of parole
    (LWOP) for crimes committed by Riley Briones, Jr., while
    a juvenile.
    This court affirmed Briones’s original life sentence in
    1998. Following the Supreme Court’s decisions in Miller v.
    Alabama, 
    567 U.S. 460
     (2012) (holding that the Eighth
    Amendment forbids a sentencing scheme that mandates life
    in prison without possibility of parole for juvenile
    offenders), and Montgomery v. Louisiana, 
    577 U.S. 190
    (2016) (holding that Miller’s rule applied retroactively on
    collateral review), Briones was resentenced to LWOP in
    2016. The three-judge panel affirmed the sentence in United
    States v. Briones, 
    890 F.3d 811
     (9th Cir. 2018). The en banc
    court subsequently vacated the sentence and remanded in
    United States v. Briones, 
    929 F.3d 1057
     (9th Cir. 2019)
    (Briones II). The Supreme Court remanded for further
    consideration in light of Jones v. Mississippi, 
    141 S. Ct. 1307
    (2021).
    **
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    UNITED STATES V. BRIONES                      3
    In Jones, a case the Supreme Court took for the express
    purpose of clarifying how to interpret Miller and
    Montgomery, the Supreme Court held that in cases involving
    LWOP defendants, a discretionary system—where a
    sentencer has considered the defendant’s youth and has
    discretion to impose a lesser sentence than LWOP—is
    constitutionally sufficient.     Jones likewise held that
    permanent incorrigibility is not an eligibility criterion for the
    imposition of juvenile LWOP sentences, and rejected the
    argument that a sentencer must at least provide an on-the-
    record sentencing explanation with an implicit finding of
    permanent incorrigibility.
    Briones argued—relying on the now-vacated en banc
    decision in Briones II—that the resentencing record does not
    reflect that the district court meaningfully engaged in
    Miller’s central inquiry, namely, identifying those whose
    crimes reflect permanent incorrigibility. The panel wrote
    that Jones made altogether clear that—irrespective of any
    seemingly contrary language in Miller or Montgomery—
    permanent incorrigibility is not an eligibility criterion for
    juvenile LWOP.
    The panel held that Briones waived his argument that a
    requirement of meaningful engagement with Miller’s central
    inquiry comes from this court’s cases interpreting the federal
    sentencing statute, 
    18 U.S.C. § 3553
    , as to which Jones is
    irrelevant. The panel wrote that Briones’s statutory
    argument would in any event fail on the merits.
    The panel rejected Briones’s argument that Briones II
    vacated his LWOP sentence for a second, independent
    reason—namely, that the district court may not have
    understood it was allowed to meaningfully consider
    evidence of his post-conviction rehabilitation. The panel
    wrote that the district court did consider Briones’s post-
    4               UNITED STATES V. BRIONES
    incarceration rehabilitation, and explained that there is no
    independent statutory requirement that a court imposing
    juvenile LWOP “meaningfully engage” in a permanent-
    incorrigibility analysis.
    The panel held that Briones waived his as-applied
    challenge to the substantive proportionality of his sentence,
    and wrote that all relevant factors militate against exercising
    discretion to consider the merits of Briones’s otherwise-
    waived substantive disproportionality arguments.
    Reviewing for plain error, the panel rejected Briones’s
    wholly speculative arguments advocating for categorical
    bans on juvenile LWOP.
    COUNSEL
    Easha Anand (argued) and Damilola Arowolaju, The
    Roderick & Solange MacArthur Justice Center, San
    Francisco, California; Katherine Cion, The Roderick &
    Solange MacArthur Justice Center, Washington, D.C.; Vikki
    M. Liles, The Law Office of Vikki M. Liles P.L.C., Phoenix,
    Arizona; Melanie L. Bostwick and Sheila Baynes, Orrick
    Herrington & Sutcliffe LLP, Washington, D.C.; for
    Defendant-Appellant.
    Krissa M. Lanham (argued), Assistant United States
    Attorney; Gary M. Restaino, United States Attorney;
    Elizabeth A. Strange, Former First Assistant United States
    Attorney; United States Attorney’s Office, Phoenix,
    Arizona; Patrick J. Schneider, United States Attorney’s
    Office, Flagstaff, Arizona; for Plaintiff-Appellee.
    UNITED STATES V. BRIONES                  5
    Jon M. Sands, Federal Public Defender; Keith J.
    Hilzendeger, Assistant Federal Public Defender; Office of
    the Federal Public Defender, Phoenix, Arizona; for Amicus
    Curiae Federal Public Defender for the District of Arizona.
    John R. Mills, Phillips Black Inc., Oakland, California;
    Rebecca Turner, Campaign for Fair Sentencing of Youth,
    Washington, D.C.; for Amici Curiae Campaign for Fair
    Sentencing of Youth, and Phillips Black Inc.
    ORDER
    The opinion filed on December 6, 2021, and reported at
    
    18 F.4th 1170
     is amended as follows:
    At page 1175, delete the following sentence: [In Jones,
    the Court held that in cases involving juvenile LWOP
    defendants, a “discretionary sentencing system”—where a
    sentencer can consider the defendant’s youth and has
    discretion to impose a lesser sentence than LWOP—is
    “constitutionally sufficient.”]
    Replace the deleted sentence on page 1175 with the
    following sentence: [In Jones, the Court held that in cases
    involving juvenile LWOP defendants, a “discretionary
    sentencing system”—where a sentencer has considered the
    defendant’s youth and has discretion to impose a lesser
    sentence than LWOP—is “constitutionally sufficient.”]
    With the opinion thus amended, the panel unanimously
    votes to deny the petition for panel rehearing. Judge
    Rawlinson votes to deny the petition for rehearing en banc,
    and Judges O’Scannlain and Ezra so recommend.
    6               UNITED STATES V. BRIONES
    The full court has been advised of the petition for
    rehearing en banc, and no active judge has requested a vote
    on whether to rehear the matter en banc. Fed. R.App. P. 35.
    The petition for panel rehearing is DENIED.          The
    petition for rehearing en banc is DENIED.
    No further petitions for panel rehearing or rehearing en
    banc will be entertained.
    OPINION
    O’SCANNLAIN, Circuit Judge:
    We must decide whether a sentence of life imprisonment
    without possibility of parole imposed on a juvenile is valid
    after the Supreme Court’s recent decision in Jones v.
    Mississippi, 
    141 S. Ct. 1307
     (2021).
    I
    A
    Riley Briones, Jr., a Salt River Pima-Maricopa Indian,
    was a founder and leader of the “Eastside Crips Rolling
    30’s,” a “violent and cold-blooded” gang which, as
    described by the resentencing judge in this case, “terrorized
    the Salt River Reservation community and surrounding area
    for several years.” In this role, Briones participated in and
    helped to plan a series of violent crimes on and around the
    Salt River Reservation.
    The most serious of these crimes was a murder
    committed on May 15, 1994, when Briones was seventeen
    UNITED STATES V. BRIONES                     7
    years, eleven months, and eight days old. According to
    evidence presented at trial, Briones and fellow gang
    members planned to rob a Subway restaurant, knowing that
    there would be only one employee present. Briones drove
    four gang members to the restaurant and parked his car
    outside while the other four—one of whom was armed with
    a gun—went in to rob the store. They ordered sandwiches
    from the lone employee, Brian Patrick Lindsay. While
    Lindsay was preparing the order, the gunman returned to the
    car to speak with Briones. Following his conversation with
    Briones, the gunman went back into the restaurant, shot
    Lindsay in the face, then shot him several more times as he
    lay on the floor. With the cash register locked, the gang
    members were able to steal only the food they had ordered
    and a bank bag containing $100. After his fellow gang
    members got back in the car, Briones looked for a
    maintenance man whom he thought had seen the robbery.
    Briones instructed the other gang members to shoot the
    maintenance man on sight, but they never found him.
    Three weeks later, Briones helped plan the firebombing
    of a rival gang member’s home and prepared the Molotov
    cocktails to be used. Briones’s fellow gang member then
    used the Molotov cocktails to set fire to a house with a family
    (including an eleven-year-old girl) inside. Several months
    later, the gang decided to try firebombing the same home
    again. Briones once again provided Molotov cocktails and
    drove fellow gang members to a kindergarten and an
    abandoned trailer home to set diversionary fires. Briones
    then drove them to the rival gang member’s home, which
    they firebombed. Another month later, Briones helped plan
    a drive-by shooting of the same home, although he was
    neither the driver nor the shooter.
    8                   UNITED STATES V. BRIONES
    Over the next year, Briones continued to participate in
    gang-related crimes, stopping only when he eventually was
    arrested (at age 19 ½). 1 For instance, when one fellow gang
    member revealed that he knew about the Subway robbery
    and Lindsay murder, Briones pistol-whipped him. After
    other gang members committed another drive-by shooting of
    a home with a mother and child inside, Briones made sure
    the culprits disposed of their clothes and accounted for the
    shell casings. At trial, the Government also presented
    evidence that Briones had discussed plans to blow up the Salt
    River Police Department and to kill a tribal judge, federal
    prosecutors, and Salt River Police investigators.
    B
    1
    As a result of these crimes, Briones was arrested in 1995.
    In 1996, he and four other members of the Eastside Crips
    Rolling 30’s were indicted on a total of 17 federal charges.
    Briones, specifically, was indicted for the following: one
    count of First-Degree Felony Murder on an Indian
    Reservation (
    18 U.S.C. §§ 1153
    , 1111, 2111); four counts of
    Arson on an Indian Reservation (
    18 U.S.C. §§ 1153
    , 81);
    two counts of Conspiracy to Commit Arson on an Indian
    Reservation (
    18 U.S.C. §§ 1153
    , 371, 81); one count of
    Possession of an Unregistered Destructive Device
    (
    26 U.S.C. §§ 5861
    (d), 5841, 5871); one count of Assault
    with a Dangerous Weapon on an Indian Reservation
    (
    18 U.S.C. §§ 1153
    , 113(a)(3)); and one count of Tampering
    1
    In fact, it appears that Briones continued to participate in gang-
    related activity, such as carving gang symbols into his jail cell door, even
    after his arrest.
    UNITED STATES V. BRIONES                     9
    with a Witness (
    18 U.S.C. § 1512
    (b)(3)). After a jury trial,
    Briones was convicted of all such offenses.
    At his original sentencing hearing in 1997, Briones
    continued to deny responsibility for his crimes. The district
    court found that Briones was the leader of the gang and, on
    the felony murder count, imposed the then-mandatory
    Guidelines sentence of life imprisonment without parole
    (“LWOP”). On the remaining non-homicide counts, Briones
    was sentenced to a total of twenty years’ imprisonment
    (which he has since served), to run concurrently with his life
    sentence.
    On direct appeal, we affirmed Briones’s conviction and
    sentence. United States v. Briones, 
    165 F.3d 918
     (9th Cir.
    1998) (unpublished table decision).
    2
    Fifteen years after Briones’s original sentencing, the
    Supreme Court held in Miller v. Alabama that “the Eighth
    Amendment forbids a sentencing scheme that mandates life
    in prison without possibility of parole for juvenile offenders”
    and instead requires that sentencing judges “take into
    account how children are different, and how those
    differences counsel against irrevocably sentencing them to a
    lifetime in prison.” 
    567 U.S. 460
    , 479–80 (2012) (emphasis
    added).
    After Miller, Briones filed a 
    28 U.S.C. § 2255
     motion to
    vacate his original LWOP sentence and to have it
    reconsidered at a resentencing hearing where the district
    court would have discretion—as required under Miller—to
    impose a lesser sentence if deemed appropriate in light of
    Briones’s “youth and attendant characteristics.” Miller,
    10              UNITED STATES V. BRIONES
    
    567 U.S. at 483
    . The district court granted such motion in
    2014 and ultimately set a resentencing hearing for 2016.
    Several months before Briones’s resentencing, the
    Supreme Court handed down Montgomery v. Louisiana,
    which held that Miller’s rule applied retroactively on
    collateral review. 
    577 U.S. 190
    , 206, 212 (2016). In dicta,
    Montgomery also appeared to extend Miller’s rule,
    suggesting that LWOP is “an unconstitutional penalty for . .
    . juvenile offenders whose crimes reflect the transient
    immaturity of youth,” i.e., “for all but . . . those whose
    crimes reflect permanent incorrigibility.” 
    Id.
     at 208–09.
    At the 2016 resentencing hearing, Briones’s counsel
    requested a sentence of 360 months’ imprisonment, rather
    than the Guidelines sentence of life imprisonment, for
    Briones’s first-degree felony murder conviction. Invoking
    the “hallmark[s] of youth” identified by Miller, counsel
    argued that a life sentence was inappropriate in Briones’s
    case, because his gang activity had been a product of
    youthful immaturity and a desire for the “feeling of banding
    together.” Counsel pointed to a dysfunctional childhood
    environment, including parental drug and alcohol abuse, a
    history of family criminality, Briones’s dropping out of
    school in the tenth grade, and his difficulties as a Native
    American attending school off the reservation where he
    lived. To mitigate Briones’s culpability in the crime, counsel
    averred that the Subway robbery scheme was not Briones’s
    idea and noted that he was not the shooter. Briones himself
    told the court that he “want[ed] to express remorse” and “to
    express grief,” although he never actually took responsibility
    for any of the crimes of which he was convicted. Finally, his
    counsel pointed to evidence of rehabilitation, including that,
    in all Briones’s time in prison, he never had been written up
    for a disciplinary infraction, that he had no gang involvement
    UNITED STATES V. BRIONES                    11
    while in prison, that he had been working continuously, that
    he had married his girlfriend (with whom he has a now-adult
    child) after his incarceration, and that he sees his wife
    regularly.
    The Government’s counsel countered that Briones still
    deserved a life sentence. The Government acknowledged
    that, under Miller, “a life sentence for a juvenile is
    inappropriate in all but the most egregious cases,” but argued
    that Briones’s indeed “is the most egregious case.” While
    recognizing that Briones was “really doing well in prison,”
    the Government noted that Briones—even as he expressed
    remorse—had failed to accept responsibility and had
    continued to minimize his role in the murder and in the gang.
    Specifically, the Government contended that it was not
    credible that Briones was unaware of his fellow gang
    members’ intention to murder Lindsay, and that—on the
    contrary—circumstantial evidence suggested Briones
    himself may have ordered the murder (insofar as the gunman
    reentered the restaurant to shoot Lindsay immediately after
    speaking with Briones outside). The prosecutor described
    Briones’s gang as “the most violent gang that I have ever
    been involved in prosecuting,” including the Hell’s Angels.
    Finally, the Government pointed out that although Briones
    was a juvenile when the murder occurred, he was only barely
    so—he was over seventeen years and eleven months old at
    the time—and that he had continued to commit violent
    crimes for another year and a half after turning eighteen,
    stopping only after he was arrested.
    After hearing from the parties and “[u]sing the
    [G]uidelines as a starting point,” the district court calculated
    a sentencing range of life imprisonment for Briones’s felony
    murder conviction, with no objection from counsel. The
    resentencing judge noted that, “[i]n addition to the
    12                 UNITED STATES V. BRIONES
    presentence report, I’ve considered the Government’s
    sentencing memorandum, the defendant’s sentencing
    memorandum[,] . . . the transcript of the [original]
    sentencing[,] . . . the victim questionnaire and the letters on
    behalf of [the] defendant.” He then found that “[a]ll
    indications are that [Briones] was bright and articulate, he
    has improved himself while he’s been in prison, but he was
    the leader of a gang that terrorized the Salt River Reservation
    community and surrounding area for several years. The gang
    was violent and cold-blooded.” Briones “appeared to be the
    pillar of strength for the people involved to make sure they
    executed the plan [to murder Lindsay],” and he “was
    involved in the final decision to kill the young clerk.” The
    judge explained that “in mitigation I do consider the history
    of the abusive father, the defendant’s youth, immaturity, his
    adolescent brain at the time, and the fact that it was impacted
    by regular and constant abuse of alcohol and other drugs, and
    he’s been a model inmate up to now. However, some
    decisions have lifelong consequences.”
    Ultimately, the district court announced that, “[h]aving
    considered those things and all the evidence I’ve heard today
    and everything I’ve read[,] . . . it’s the judgment of the Court
    that Riley Briones, Jr.[,] is hereby committed to the Bureau
    of Prisons for a sentence of life.” 2
    Briones timely appealed to this court.
    2
    Because the federal system does not permit parole or early release
    from life sentences, see 
    18 U.S.C. § 3624
    (b)(1), Briones’s sentence is
    effectively for life without the possibility of parole.
    UNITED STATES V. BRIONES                            13
    3
    Briones filed an Opening Brief raising as his only non-
    foreclosed argument that “[t]he district court did not
    properly analyze whether [he] is one of the rare person[s]
    whose juvenile crimes rendered him ‘incorrigible.’” In a
    published opinion, this three-judge panel affirmed Briones’s
    life sentence. United States v. Briones, 
    890 F.3d 811
     (9th
    Cir. 2018) (“Briones I”). 3
    After Briones filed a petition for rehearing en banc, this
    court ordered en banc rehearing and vacated the original
    three-judge panel’s decision. United States v. Briones,
    
    915 F.3d 591
     (9th Cir. 2019). The en banc panel
    subsequently vacated Briones’s sentence and remanded.
    United States v. Briones, 
    929 F.3d 1057
     (9th Cir. 2019) (en
    banc) (“Briones II”).
    4
    Following the en banc panel’s decision in Briones II, the
    Government timely petitioned for certiorari.
    During the pendency of such petition, the Supreme Court
    issued its decision in Jones v. Mississippi, a case it had taken
    for the express purpose of clarifying “how to interpret Miller
    and Montgomery.” 141 S. Ct. at 1313. In Jones, the Court
    held that in cases involving juvenile LWOP defendants, a
    “discretionary sentencing system”—where a sentencer has
    3
    I authored a separate opinion partially concurring in and partially
    dissenting from the majority opinion in Briones I. See 890 F.3d at 822–
    28 (O’Scannlain, J., concurring in part and dissenting in part). However,
    for the reasons discussed in Parts II and III, infra, the concerns expressed
    in my partial dissent have been mooted by Jones’s clarification of Miller
    and Montgomery.
    14              UNITED STATES V. BRIONES
    considered the defendant’s youth and has discretion to
    impose a lesser sentence than LWOP—is “constitutionally
    sufficient.” Id. Likewise, the Court held that “permanent
    incorrigibility is not an eligibility criterion” for the
    imposition of juvenile LWOP sentences, id. at 1315, and
    rejected the argument that “a sentencer must at least provide
    an on-the-record sentencing explanation with an ‘implicit
    finding’ of permanent incorrigibility,” id. at 1319.
    Subsequently, the Supreme Court issued an order
    granting the Government’s petition for certiorari in this case,
    vacating the en banc decision in Briones II, and remanding
    to this court for further consideration in light of Jones.
    United States v. Briones, 
    141 S. Ct. 2589
     (2021).
    5
    On remand from the Supreme Court, the en banc panel
    from Briones II further remanded the case to this three-judge
    panel. United States v. Briones, 
    1 F.4th 1204
     (9th Cir. 2021)
    (en banc).
    II
    A
    Briones first argues—relying on the now-vacated en
    banc decision in Briones II—that the resentencing record
    below does not “reflect that the [district] court meaningfully
    engaged in Miller’s central inquiry,” namely, identifying
    “those whose ‘crimes reflect permanent incorrigibility.’”
    Briones II, 929 F.3d at 1061, 1067 (quoting Montgomery,
    577 U.S. at 209).
    Jones, however, made clear that the Eighth Amendment
    requires neither an explicit nor even an implicit finding of
    UNITED STATES V. BRIONES                    15
    permanent incorrigibility. See 141 S. Ct. at 1313 (“[A]
    separate factual finding of permanent incorrigibility is not
    required.”); id. at 1319 (“[A]n on-the-record sentencing
    explanation with an implicit finding of permanent
    incorrigibility (i) is not necessary to ensure that a sentencer
    considers a defendant’s youth, [and] (ii) is not required by or
    consistent with Miller . . . .”). Rather, Jones seized upon
    Miller’s language purporting to “mandate[] ‘only that a
    sentencer follow a certain process—considering an
    offender’s youth and attendant characteristics—before
    imposing’ a life-without-parole sentence.” Id. at 1311
    (quoting Miller, 
    567 U.S. at 483
    ). To that end, Jones
    clarified that a “discretionary sentencing system is both
    constitutionally necessary and constitutionally sufficient,”
    because such discretion “suffices to ensure individualized
    consideration of a defendant’s youth.” Id. at 1313, 1321
    (emphasis added).
    Here, the district court plainly considered “youth and its
    attendant characteristics,” id. at 1317 (quoting Montgomery,
    577 U.S. at 210), at Briones’s resentencing. Indeed, the
    resentencing judge explained, on the record, that “in
    mitigation I do consider the history of the abusive father, the
    defendant’s youth, immaturity, his adolescent brain at the
    time, and the fact that it was impacted by regular and
    constant abuse of alcohol and other drugs.” And as the
    Government aptly notes, “Jones makes clear that in
    explicitly addressing these items, the district court did more
    than was required, not less.” That is because a sentencer with
    discretion to consider youth “necessarily will consider” it,
    “especially if”—as here—“defense counsel advance[d] an
    argument based on the defendant’s youth.” Id. at 1319
    (emphasis in original).
    16              UNITED STATES V. BRIONES
    Nevertheless, Briones now argues that “Jones did not
    purport to change” what he characterizes as Miller’s and
    Montgomery’s “central inquiry” into permanent
    incorrigibility. In support of this contention, he points to
    Jones’s assurance that “[t]he Court’s decision today
    carefully follows both Miller and Montgomery.” Id. at 1321.
    Such language, Briones urges, must mean that Jones left in
    place Montgomery’s dictum that LWOP is “an
    unconstitutional penalty for . . . juvenile offenders whose
    crimes reflect the transient immaturity of youth,” i.e., “for
    all but . . . those whose crimes reflect permanent
    incorrigibility.” Montgomery, 577 U.S. at 208–09.
    Yet when the Jones Court stated that it was “carefully
    follow[ing] both Miller and Montgomery,” 141 S. Ct. at
    1321, it made clear that it read those cases for far narrower
    propositions than Briones would have us read them here. See
    id. (“Miller held that a State may not impose a mandatory
    life-without-parole sentence on a murderer under 18.
    Today’s decision does not disturb that holding. Montgomery
    later held that Miller applies retroactively on collateral
    review. Today’s decision likewise does not disturb that
    holding.”). Indeed, Jones made altogether clear that—
    irrespective of any seemingly contrary language in Miller or
    Montgomery—“permanent incorrigibility is not an
    eligibility criterion” for juvenile LWOP. Id. at 1315.
    B
    Perhaps anticipating Jones’s foreclosure of his
    constitutional claim, Briones now argues that “the
    requirement of ‘meaningful engagement’” with what
    Briones II characterized as Miller’s central inquiry “comes
    from this Court’s cases interpreting the federal sentencing
    statute, as to which, of course, Jones is irrelevant.” Cf.
    Briones II, 929 F.3d at 1067 (citing United States v. Carty,
    UNITED STATES V. BRIONES                    17
    
    520 F.3d 984
    , 992 (9th Cir. 2008) (en banc) (applying
    
    18 U.S.C. § 3553
    )).
    As a threshold matter, Briones’s statutory argument
    appears to have been waived twice over. He has waived such
    argument by failing to raise it in his Opening Brief, see
    Devereaux v. Abbey, 
    263 F.3d 1070
    , 1079 (9th Cir. 2001)
    (en banc), and by affirmatively stating at oral argument in
    Briones I that his claim was constitutional rather than
    statutory, cf. Hilao v. Estate of Marcos, 
    393 F.3d 987
    , 993
    (9th Cir. 2004).
    And in any event, Briones’s statutory argument would
    fail on the merits after Jones. Briones II relied on Carty for
    its holding that “[w]hen a district court sentences a juvenile
    offender in a case in which an LWOP sentence is possible,
    the record must reflect that the court meaningfully engaged
    in Miller’s central inquiry.” Briones II, 929 F.3d at 1067
    (citing Carty, 
    520 F.3d at 992
    ). But Carty stated only the
    general proposition that “[o]nce the sentence is selected, the
    district court must explain it sufficiently to permit
    meaningful appellate review.” 
    520 F.3d at 992
    . Carty does
    not specifically require—or even refer to—the permanent-
    incorrigibility analysis that Briones charges the district court
    with failing to perform. Indeed, Carty recognized that
    “[w]hat constitutes a sufficient explanation will necessarily
    vary depending upon the complexity of the particular case.”
    
    Id.
    Here, then, Briones II’s application of Carty and § 3553
    depended on the premise that such an incorrigibility analysis
    was necessary “to permit meaningful appellate review” of
    the district court’s chosen sentence under then-controlling
    Eighth Amendment precedents. Briones II, 929 F.3d at 1067
    (quoting Carty, 
    520 F.3d at 992
    ). But once again, Jones
    rendered such premise untenable when it held that
    18                 UNITED STATES V. BRIONES
    “permanent incorrigibility is not an eligibility criterion.”
    141 S. Ct. at 1315.
    III
    Next, Briones characterizes Briones II as having
    “vacated [his LWOP] sentence for a second, independent
    reason” 4—namely, that “the district court may not have
    understood it was allowed to meaningfully consider
    evidence of [his] post-conviction rehabilitation.” See
    929 F.3d at 1066–67. Briones argues that “[b]ecause Jones
    had no effect on that portion of [the Briones II] opinion, it
    should be reinstated.”
    First, Briones’s factual premise is simply false. The
    district court did consider Briones’s post-incarceration
    rehabilitation—and explicitly stated as much, noting in its
    on-the-record resentencing explanation that Briones had
    “been a model inmate” and “improved himself while . . . in
    prison.”
    Moreover, Briones is mistaken to suggest that the
    Briones II majority’s treatment of the rehabilitation-
    evidence issue was “independent” of its view that the district
    court failed to perform an adequate permanent-
    incorrigibility analysis—or that “Jones had no effect on that
    portion of [the Briones II] opinion.” The Briones II majority
    explicitly reasoned that the district court’s putative failure to
    consider Briones’s rehabilitation evidence “require[d]
    remand” because that “is precisely the sort of evidence of
    capacity for change that is key to determining whether a
    defendant is permanently incorrigible.” 929 F.3d at 1067
    4
    That is, “independent” of the district court’s putative failure to
    engage meaningfully in a permanent-incorrigibility analysis.
    UNITED STATES V. BRIONES                           19
    (emphasis in original). But in light of Jones’s clarification
    that “permanent incorrigibility is not an eligibility criterion”
    for juvenile LWOP, 141 S. Ct. at 1315, the Briones II
    majority’s chain of reasoning falls apart. 5 In sum, we
    conclude that there is no independent statutory requirement
    that a court imposing juvenile LWOP “meaningfully
    engage” in a permanent-incorrigibility analysis.
    IV
    Next, and for the first time in his Supplemental Brief on
    remand, Briones raises two distinct arguments, each based
    on a separate line of caselaw, in support of a novel as-applied
    Eighth Amendment challenge to the substantive
    proportionality of his sentence. 6
    5
    Put slightly differently, Briones II appeared to reason that the
    district court erred by imposing LWOP without making a finding on
    whether Briones’s rehabilitation evidence demonstrated the sort of
    “capacity for change” that would rule out permanent incorrigibility.
    929 F.3d at 1066–67. But of course, the import of such a finding could
    be only that it might constitute (or at least contribute to) “an ‘implicit
    finding’ of permanent incorrigibility.” Jones, 141 S. Ct. at 1319. And
    Jones flatly “reject[ed]” the argument “that a sentencer must . . . provide
    an on-the-record sentencing explanation with an ‘implicit finding’ of
    permanent incorrigibility.” Id.
    6
    First, Briones makes what is essentially a substantive version of
    the procedural argument he has been pressing all along: He relies on
    Montgomery to argue that, insofar as his “crime reflect[ed] transient
    immaturity” rather than “permanent incorrigibility,” his juvenile LWOP
    sentence is “disproportionate under the Eighth Amendment.” 577 U.S.
    at 209, 211.
    Second, Briones argues that his sentence also is substantively
    disproportionate under the framework set forth in Chief Justice Roberts’s
    concurring opinion in Graham v. Florida. See 
    560 U.S. 48
    , 86–96 (2010)
    20                UNITED STATES V. BRIONES
    “As a general matter, ‘[w]e review only issues which are
    argued specifically and distinctly in a party’s opening
    brief,’” Devereaux, 
    263 F.3d at 1079
     (quoting Greenwood v.
    FAA, 
    28 F.3d 971
    , 977 (9th Cir. 1994)), and as a corollary,
    “an issue will . . . be deemed waived if it is raised for the first
    time in a supplemental brief,” 
    id.
     (citing Kreisner v. City of
    San Diego, 
    1 F.3d 775
    , 778 n.2 (9th Cir. 1993)). Nowhere in
    his Opening Brief did Briones challenge—or even
    mention—the substantive proportionality of his sentence.
    Rather, his only argument (other than those arguments he
    expressly conceded were “foreclosed,” see infra Part V) was
    that the district court committed procedural error “by
    sentencing [him] . . . without assessing whether he is one of
    the rare juveniles who is permanently incorrigible.”
    Accordingly, Briones’s as-applied challenge to the
    substantive proportionality of his sentence is waived.
    Moreover, all relevant factors militate against exercising
    our discretion to consider the merits of Briones’s otherwise-
    waived substantive-disproportionality arguments. Briones
    has made no attempt to establish “good cause” for his failure
    to raise such arguments in his Opening Brief, and the
    Government did not sua sponte raise the issue of substantive
    proportionality in its Answering Brief. Cf. United States v.
    Ullah, 
    976 F.2d 509
    , 514 (9th Cir. 1992). Most dispositively,
    because Briones raises these arguments for the first time in
    the Supplemental Brief he submitted in response to an order
    (Roberts, C.J., concurring). Specifically, Briones argues that an
    examination of his crime of conviction, his sentence, and his
    characteristics should give rise to “an inference of gross
    disproportionality,”     which      would      be     “confirm[ed]” by
    “intrajurisdictional and interjurisdictional comparisons” between his
    sentence and other “sentences imposed for the same crime” in the same
    jurisdiction and other jurisdictions, respectively. Id. at 88, 93.
    UNITED STATES V. BRIONES                         21
    for simultaneous briefing, the Government has not had an
    opportunity to respond to them. As such, the Government
    surely would be “prejudice[d],” id., if we were to consider
    either of Briones’s novel arguments that his sentence was
    substantively disproportionate. We therefore decline to
    reach such arguments.
    V
    Finally, Briones argues that LWOP is categorically
    unconstitutional for any juvenile offender, or, at least,
    categorically unconstitutional for juvenile homicide
    offenders who were not the direct cause of a victim’s death. 7
    Because Briones expressly concedes that he “did not
    specifically object to the imposition of a life sentence” on
    either of these grounds in the district court, we review for
    plain error. See United States v. Ameline, 
    409 F.3d 1073
    ,
    1078 (9th Cir. 2005) (en banc). “An error is plain if it is
    ‘contrary to the law at the time of the appeal.’” 
    Id.
     (quoting
    Johnson v. United States, 
    520 U.S. 461
    , 468 (1997)). And
    here, Briones also expressly concedes that existing law
    imposes no categorical ban on LWOP either for juveniles,
    generally, or for juvenile homicide offenders who did not
    pull the trigger, more specifically. Effectively, then, Briones
    has conceded that the district court committed no plain error.
    We therefore reject his wholly speculative arguments
    advocating for categorical bans on juvenile LWOP.
    7
    In his Opening Brief, Briones acknowledged that both of these
    arguments were “foreclosed” under existing law and that he was raising
    them only “to preserve [them] for future litigation.”
    22             UNITED STATES V. BRIONES
    VI
    The district court’s imposition of a new LWOP sentence
    at Briones’s 2016 resentencing hearing is AFFIRMED.