Jesse Andrews v. Ron Davis ( 2019 )


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  •                  FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    JESSE JAMES ANDREWS,                   Nos. 09-99012
    Petitioner-Appellant/           09-99013
    Cross-Appellee,
    D.C. No.
    v.                    2:02-CV-08969-R
    RON DAVIS,
    Respondent-Appellee/         OPINION
    Cross-Appellant.
    Appeal from the United States District Court
    for the Central District of California
    Manuel L. Real, District Judge, Presiding
    Argued and Submitted En Banc September 25, 2018
    Pasadena, California
    Filed December 16, 2019
    Before: Sidney R. Thomas, Chief Judge, and Ronald M.
    Gould, Marsha S. Berzon, Johnnie B. Rawlinson, Jay S.
    Bybee, N. Randy Smith, Mary H. Murguia, Jacqueline H.
    Nguyen, Paul J. Watford, John B. Owens and Michelle T.
    Friedland, Circuit Judges.
    Opinion by Judge Murguia;
    Partial Concurrence and Partial Dissent by
    Judge N.R. Smith
    2                      ANDREWS V. DAVIS
    SUMMARY *
    Habeas Corpus/Death Penalty
    In an appeal and cross-appeal arising from Jesse
    Andrews’s habeas corpus petition challenging his California
    conviction and death sentence on three counts of murder, the
    en banc court affirmed the district court’s grant of sentencing
    relief based on ineffective assistance of counsel, dismissed
    as unripe Andrews’s Eighth Amendment claim challenging
    California’s lethal-injection protocol, and denied a request
    to certify for appeal Andrews’s uncertified claims.
    Regarding the performance prong in Strickland v.
    Washington, 
    466 U.S. 668
    (1984), the en banc court held that
    the California Supreme Court unreasonably applied clearly
    established federal law in concluding that Andrews received
    constitutionally adequate counsel at the penalty phase. The
    en banc court held that the only reasonable interpretation of
    Supreme Court precedent and the facts of this case lead to
    the following conclusions: (1) that Andrews’s attorneys
    failed in their duty to undertake a reasonable investigation at
    the penalty phase; (2) that their choices cannot be
    rationalized as “strategic” or “tactical;” and (3) that any
    reasonably competent attorney would have discovered and
    introduced substantial and compelling mitigating evidence
    that existed. The en banc court held that no fair-minded
    jurist would conclude otherwise.
    Regarding Strickland’s prejudice prong, the en banc
    court held that the California Supreme Court’s conclusion—
    *
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    ANDREWS V. DAVIS                       3
    that Andrews suffered no prejudice from the omission of the
    substantial and compelling evidence that his attorneys
    should have introduced but didn’t—was objectively
    unreasonable. The en banc court held that, without having
    heard the substantial and compelling mitigating evidence,
    the jury could not fairly gauge Andrews’s moral culpability
    at sentencing, and that no fair-minded jurist would disagree.
    Concurring in part and dissenting in part, Judge N.R.
    Smith, joined by Judges Rawlinson and Owens, wrote that
    the majority essentially evaluated the merits de novo rather
    than with the appropriate deference under the Antiterrorism
    and Effective Death Penalty Act; and that the California
    Supreme Court reasonably concluded that Andrews was not
    prejudiced by his counsel’s deficient performance during
    sentencing.
    COUNSEL
    Michael Burt (argued), Law Office of Michael Burt, San
    Francisco, California, for Petitioner-Appellant/Cross-
    Appellee.
    Xiomara Costello (argued), Keith H. Borjon, and James
    William Bilderback II, Supervising Deputy Attorneys
    General; A. Scott Hayward, Sarah J. Farhat, and Shira Siegle
    Markovich, Deputy Attorneys General; Michael J. Mongan,
    Deputy Solicitor General; Lance E. Winters and Ronald S.
    Matthias, Senior Assistant Attorneys General; Dane R.
    Gillette and Gerald A. Engler, Chief Assistant Attorneys
    General; Edward C. DuMont, Solicitor General; Xavier
    Becerra, Attorney General; Office of the Attorney General,
    Los Angeles, California; for Respondent-Appellee.
    4                   ANDREWS V. DAVIS
    OPINION
    MURGUIA, Circuit Judge:
    Jesse Andrews was sentenced to death by a jury that only
    knew the State’s view of him. He was, according to the
    prosecutor, a “vicious animal.” The jury, however, did not
    know—because it was never told—anything about
    Andrews’s upbringing in a segregated and impoverished
    area of Mobile, Alabama. Andrews’s counsel did not tell the
    jury that Andrews, as a child, had been confined at the
    Alabama Industrial School for Negro Children known as
    “Mt. Meigs”—a segregated, state-run institution that, in the
    words of one witness, was a “slave camp for children.” The
    jury was not told that, during these formative years, Andrews
    was repeatedly subject to brutal abuse at the hands of his
    state custodians. It was not told that, from the age of
    fourteen, Andrews was in the custody of Alabama state
    institutions so degrading that federal courts later found the
    conditions in those institutions violated the Eighth
    Amendment’s prohibition on cruel and unusual punishment.
    Nor was the jury told that, in the view of mental health
    experts, the severe abuse Andrews suffered made his
    subsequent criminal behavior understandable and
    predictable.
    In short, Andrews’s counsel did nothing to
    counterbalance the prosecutor’s view of their client or to
    portray Andrews as a human being, albeit one who had
    committed violent crimes. In fact, Andrews’s counsel
    introduced almost no evidence in mitigation at the penalty
    phase. Despite this record of deficient representation, the
    California Supreme Court concluded that, under Strickland
    v. Washington, 
    466 U.S. 668
    (1984), Andrews received
    constitutionally adequate representation at the penalty phase.
    ANDREWS V. DAVIS                         5
    That decision       is   fundamentally      and     objectively
    unreasonable.
    Indeed, it is unconscionable and unreasonable to uphold
    a sentence of death when the jury never heard readily
    available mitigating evidence of the magnitude present here.
    This is especially so when, as here, counsel failed to present
    any meaningful evidence in mitigation.               Counsel’s
    performance at the penalty phase of Andrews’s trial was so
    deficient that it failed to “fulfill the role in the adversary
    process that the [Sixth] Amendment envisions,”
    undermining all confidence in the sentence. 
    Id. at 688.
    To be sure, our deference to state court decisions is at its
    zenith on federal habeas review. See Harrington v. Richter,
    
    562 U.S. 86
    , 105 (2011). Indeed, federal courts are barred
    from granting habeas relief as to state court convictions if
    jurists of reason could debate the correctness of the state
    court’s decision, and a “state court must be granted a
    deference and latitude that are not in operation when the case
    involves review under the Strickland standard itself.” 
    Id. at 101.
    That deference, however, “does not by definition
    preclude relief.” Miller-El v. Cockrell, 
    537 U.S. 322
    , 340
    (2003).
    This case presents the type of “extreme malfunction[]”
    in the operation of a state’s criminal justice system that
    justifies the intervention of a federal habeas court. 
    Richter, 562 U.S. at 102
    (quoting Jackson v. Virginia, 
    443 U.S. 307
    ,
    332 n.5 (1979) (Stevens, J., concurring in judgment)). We
    therefore affirm the district court’s grant of sentencing relief
    based on Andrews’s ineffective assistance of counsel claim.
    The California Supreme Court unreasonably applied clearly
    established federal law when it concluded that Andrews
    received constitutionally adequate representation at the
    6                    ANDREWS V. DAVIS
    penalty phase of his trial. Unless the State elects to
    reprosecute the penalty phase, the writ will issue.
    I
    A
    The facts of Andrews’s crimes inspire little sympathy.
    In December 1979, police were called to a Los Angeles
    apartment, where officers located the bodies of three murder
    victims—Preston Wheeler, Patrice Brandon, and Ronald
    Chism. In re Andrews, 
    52 P.3d 656
    , 657 (Cal. 2002). Police
    later arrested Charles Sanders in connection with the crime.
    People v. Andrews, 
    776 P.2d 285
    , 288 (Cal. 1989). Sanders
    entered a plea agreement and gave a statement describing the
    murders and implicating Andrews. 
    Id. at 288–89.
    Andrews
    was arrested and charged in June 1982. 
    Id. at 295–96.
    The evidence presented at trial connecting Andrews to
    the murders primarily consisted of Sanders’s testimony, the
    testimony of another witness, and fingerprint and palm print
    evidence. In re 
    Andrews, 52 P.3d at 658
    . Sanders testified
    that he and Andrews devised a plan to rob Wheeler, a drug
    dealer. 
    Id. After entering
    Wheeler’s apartment and smoking
    marijuana with him, Sanders and Andrews drew their
    weapons, tied up Wheeler and Brandon, and began to search
    the apartment for drugs and money. 
    Id. When their
    search
    proved unfruitful, Andrews said that he would “make
    Brandon talk,” and he “dragged her into the kitchen and
    closed the door.” 
    Id. (quoting Andrews,
    776 P.2d at 288).
    Sanders testified that he heard Andrews “hitting Brandon
    and later heard sounds as though they were having sex.” 
    Id. After Andrews
    came out of the kitchen, Sanders began
    searching for drugs in the attic. 
    Id. Sanders testified
    that he
    then heard two shots and, when he came down from the attic,
    ANDREWS V. DAVIS                        7
    Andrews told him he had shot Wheeler, at close range,
    because Wheeler had tried to escape. 
    Id. Sanders also
    testified that Andrews told him he had killed Brandon before
    leaving the kitchen. 
    Id. While Sanders
    and Andrews were cleaning the
    apartment, Chism “knocked on the door and asked if
    everything was all right.” 
    Id. According to
    Sanders,
    Andrews “then hit Chism on the head, tied him up, and took
    him into the bathroom,” where Andrews strangled him. 
    Id. (internal quotation
    mark omitted). Sanders then saw
    Andrews reenter the kitchen and choke Brandon with a wire
    clothes hanger. 
    Id. The defense’s
    guilt-phase strategy consisted primarily of
    “attempts to undermine Sanders’s credibility.” 
    Andrews, 776 P.2d at 289
    . Two inmates who had been in jail with
    Sanders testified that he made statements suggesting that he
    planned to fabricate a story to shift the blame for the murders
    to someone else. 
    Id. Andrews did
    not testify. 
    Id. The jury
    deliberated for three days before finding
    Andrews guilty of the first-degree murders of Wheeler,
    Brandon, and Chism. Andrews was also convicted of rape,
    sodomy by a foreign object, and robbery. In re 
    Andrews, 52 P.3d at 658
    –59.         And the jury found four special
    circumstances to be true—prior murder, multiple murder,
    robbery-murder, and rape-murder—making Andrews
    eligible for the death penalty. 
    Id. at 659.
    The penalty-phase presentations for both the prosecution
    and the defense were limited. The prosecution’s evidence
    consisted of a stipulation and two exhibits. 
    Id. The exhibits
    were photographs of two of the victims that had been
    excluded from the guilt phase because they were unduly
    inflammatory. 
    Id. The stipulation
    established Andrews’s
    8                     ANDREWS V. DAVIS
    birthday (showing that Andrews was twenty-nine years old
    at the time of the murders), and that Andrews had pleaded
    guilty in Alabama to the crimes of armed robbery, escape,
    and robbery. 
    Andrews, 776 P.2d at 300
    . The prosecution
    gave a short closing presentation focused on the violent
    circumstances of the crimes that repeatedly mentioned
    Andrews’s prior convictions for violent offenses.
    The defense’s evidence, admitted by stipulation,
    consisted of two “sworn statements describing the
    circumstances surrounding [Andrews’s] prior Alabama
    murder conviction.” 
    Id. According to
    the statements,
    Andrews and his accomplice “entered a grocery store and
    announced a robbery. When the store clerk placed his hand
    down the front of his apron, [Andrews’s] companion fired
    three gunshots, killing” the store clerk. 
    Id. After calling
    no witnesses and introducing only a brief
    description of Andrews’s previous crimes into evidence,
    Andrews’s counsel gave a short, rambling closing
    statement—spanning just nine pages of trial transcript. 1
    Counsel’s statement overwhelmingly focused on Andrews’s
    age. In fact, counsel repeatedly suggested that the “fact
    alone that [Andrews was] only [twenty-nine] years old can
    be sufficient in mitigation for you to consider. That alone.”
    Counsel’s brief presentation also veered from topic to
    topic—from the security at Folsom prison, to Andrews’s
    secondary role in his prior murder conviction, to the fact that
    Sanders, as well as defendants in other high-profile murders,
    did not receive death sentences for their crimes.
    The jury returned a death verdict on each of the three
    murder counts. In re 
    Andrews, 52 P.3d at 658
    –59. The
    1
    A copy of this portion of the trial transcript is attached as
    Appendix A.
    ANDREWS V. DAVIS                                9
    California Supreme Court affirmed the conviction and
    sentence on direct appeal on August 3, 1989. 
    Andrews, 776 P.2d at 285
    , 288.
    B
    Andrews later filed petitions for state post-conviction
    relief before the California Supreme Court. One claim
    asserted that, at the penalty phase of his trial, Andrews
    received ineffective assistance from his counsel—Gerald
    Lenoir and Hal Miller—based on their failure to investigate
    avenues of mitigation and to present mitigation evidence. In
    re 
    Andrews, 52 P.3d at 659
    .
    1
    The California Supreme Court appointed a state superior
    court judge to conduct a reference hearing 2 and to take
    evidence and make findings of fact on a series of questions
    related to Andrews’s ineffective assistance of counsel claim.
    
    Id. The referee
    received testimony from more than fifty
    witnesses over multiple years. 
    Id. at 660
    & n.2.
    The referee determined that “[n]o character evidence and
    virtually no mitigation was presented at the penalty trial.”
    However, through the use of “standard investigative
    techniques” and “simple persistence,” Andrews’s counsel
    2
    Under California law, “[b]ecause appellate courts are ill-suited to
    conduct evidentiary hearings, it is customary for appellate courts to
    appoint a referee to take evidence and make recommendations as to the
    resolution of disputed factual issues.” People v. Romero, 
    883 P.2d 388
    ,
    393 (Cal. 1994). The referee acts as “an impartial fact finder for [a
    California appellate court].” In re Boyette, 
    301 P.3d 530
    , 546 (Cal. 2013)
    (internal quotation marks omitted). Although the referee’s factual
    findings are not binding on the court, the findings are “entitled to great
    weight where supported by substantial evidence.” 
    Id. (internal quotation
    mark omitted).
    10                  ANDREWS V. DAVIS
    could have identified and presented a “large number of
    witnesses” in mitigation, “painting an in-depth portrait” of
    Andrews.
    Based on the referee’s findings, that portrait would have
    revealed that Andrews was born and raised in a segregated
    and poor part of Mobile, Alabama in the 1960s. In re
    
    Andrews, 53 P.3d at 660
    . His parents were alcoholics who
    separated soon after his birth, leaving Andrews and his
    siblings in the care of his grandparents. 
    Id. When Andrews
    was approximately ten years old, his grandfather—described
    by the referee as a “pivotal figure” in his life—died. 
    Id. (internal quotation
    marks omitted). After his grandfather’s
    death, Andrews became “more withdrawn, [his] truancy
    increased significantly, and he started to get involved in
    minor legal scrapes.” At age fourteen, as a result of his
    involvement in a car theft, Andrews was committed to Mt.
    Meigs. In re 
    Andrews, 53 P.3d at 660
    .
    The conditions at Mt. Meigs were “appalling.” 
    Id. A federal
    district court judge—who had participated in
    litigation pertaining to the conditions at Mt. Meigs before
    joining the bench—testified at the reference hearing that “the
    institution was a penal colony for children.” 
    Id. at 677
    (Kennard, J., dissenting) (internal quotation mark omitted).
    Another witness, a former juvenile probation officer—who
    testified before Congress and state legislatures about
    juvenile facilities around the country—described Mt. Meigs
    as a “slave camp for children.” 
    Id. (internal quotation
    marks
    omitted). He testified that the children there were “beaten
    all the time with, among other things, broomsticks, mop
    handles, and fan belts” and that Mt. Meigs was “by far, by
    far . . . the worst facility” he had ever seen. 
    Id. (internal quotation
    marks omitted).
    ANDREWS V. DAVIS                        11
    The former probation officer added that the children
    committed to Mt. Meigs in the 1960s had “no chance of
    rehabilitation” and “came out much worse” than when they
    entered. Indeed, the institution was “not designed for
    rehabilitation.” There were “no vocational programs, no
    counseling, and virtually no education” available. In re
    
    Andrews, 53 P.3d at 677
    . Instead, children were “put to
    work in the fields, picking cotton and tending vegetables.”
    
    Id. At night,
    there was little supervision, leading to “a lot of
    sexual abuse of children.” 
    Id. (internal quotation
    marks
    omitted).
    Thirteen of the witnesses who testified at the reference
    hearing had been committed to Mt. Meigs, and seven were
    there at the same time as Andrews. 
    Id. Each testified
    to
    “horrific conditions,” describing beatings with “sticks
    (sometimes lead-filled), bullwhips, and fan belts, often for
    trivial matters.” 
    Id. These witnesses
    repeated one
    particularly cruel example of abuse: When a child was
    disobedient in the fields or failed to pick his quota of cotton,
    an overseer would “poke a hole in the ground and order him
    to lie down, to pull down his pants, and to stick his penis into
    the hole. The overseer would then beat the boy’s thighs with
    a stick, often until the skin burst open. One witness
    remembered seeing [Andrews] beaten in this manner.” 
    Id. In 1971,
    a federal district court in Alabama determined
    that “the frequent and indiscriminate use of corporal
    punishment” by school personnel at Mt. Meigs demonstrated
    a “callous indifference to children’s safety,” providing a
    basis for liability for cruel and unusual punishment under the
    Eighth Amendment. Stockton v. Ala. Indus. Sch. for Negro
    Child., No. 2834-N (M.D. Ala. July 23, 1971) (order
    adopting proposed findings of fact and conclusions of law
    dated July 19, 1971).
    12                  ANDREWS V. DAVIS
    As the referee concluded, once Andrews entered Mt.
    Meigs at age fourteen,
    [h]is academic schooling from that point was
    virtually nonexistent, and he was subjected to
    beatings, brutality, inadequate conditions and
    sexual predators . . . . He was rarely visited
    by family[, and his] passiveness and small
    physique caused him to be a target of older,
    tougher boys, from whom no protection or
    separation was provided.
    Because of his young age and slight build, that targeting
    included “substantial sexual pressure.” In re 
    Andrews, 52 P.3d at 677
    (Kennard, J., dissenting). And, according to
    Andrews’s mother, whatever “happened at that industrial
    school [] ruined [Andrews’s] life.”
    Following his release from Mt. Meigs, Andrews
    “became withdrawn and uncommunicative.” In re 
    Andrews, 53 P.3d at 661
    (majority opinion). “Over his family’s
    objections, he began to associate with older, streetwise boys,
    including Freddie Square, a more sophisticated young man
    with manipulative and criminal tendencies.” 
    Id. (internal quotation
    mark omitted). Just months after his release from
    Mt. Meigs, “at Square’s instigation,” Andrews and Square
    robbed a grocery store. 
    Id. During the
    robbery, Square shot
    and killed the store clerk. 
    Id. Shortly thereafter,
    Andrews
    was convicted of murder and robbery for his role in the
    crime. 
    Id. Andrews spent
    the next ten years in various jails and
    prisons throughout the state. 
    Id. The referee
    described the
    conditions in Alabama as
    ANDREWS V. DAVIS                       13
    abysmal,     characterized     by     severe
    overcrowding,        racial      segregation,
    substandard facilities, no separation of the
    tougher inmates from younger or smaller
    inmates, constant violence, the persistent
    threat of sexual assaults and the constant
    presence of sexual pressure, the availability
    and necessity of weapons by all inmates, and
    degrading conditions in disciplinary
    modules.
    
    Id. (internal quotation
    marks omitted).
    One expert witness described the Alabama prison system
    at the time as a “national disgrace” and as either “the worst”
    or “among a handful of the worst” prison systems in the
    United States. 
    Id. at 678
    (Kennard, J., dissenting) (internal
    quotation marks omitted). During the time Andrews was
    incarcerated in Alabama, the prison conditions there, like the
    conditions in Mt. Meigs, were found to violate the Eighth
    Amendment. 
    Id. at 676;
    see also Pugh v. Locke, 406 F.
    Supp. 318, 322–31 (M.D. Ala. 1976).
    According to the testimony of a former physician at one
    facility, the “conditions at the overcrowded and rat-infested
    prisons [were] ‘so debilitating’ that they deprived inmates of
    ‘any opportunity to rehabilitate themselves or even to
    maintain the skills already possessed.’” In re 
    Andrews, 52 P.3d at 678
    (Kennard, J., dissenting). When Andrews
    entered the prison system, “it was newly integrated and
    many of the [w]hite prison guards resented the [b]lack
    prisoners, whom they called ‘things’ and ‘niggers.’” 
    Id. Sexual assaults
    in the prisons were common and,
    according to one expert witness, “[t]he prevailing view
    among both staff and inmates was that an inmate who was
    14                   ANDREWS V. DAVIS
    raped ‘deserved’ it because he was ‘not man enough to
    fight.’” 
    Id. Although the
    precise details were unclear,
    Andrews’s post-conviction counsel presented evidence at
    the state court hearing that Andrews was “repeatedly raped
    in prison.” 
    Id. at 679–80
    (reviewing testimony describing
    four separate sexual assaults). Another witness, a former
    inmate in prison with Andrews, described him as a “little
    sheep among wolves, a baby among a bunch of grownups.”
    
    Id. at 679
    (internal quotation mark omitted).
    And yet, despite the violence surrounding Andrews, the
    referee found that
    it was undisputed that [Andrews] was rarely
    the instigator of violence. On the contrary,
    the evidence showed that he avoided violence
    and appeared to adjust well when the
    structure permitted and that he would
    continue to do so. His small stature made him
    the target of more violent inmates in virtually
    every institution in which he was housed.
    However, when circumstances permitted, he
    tended to hold positions of responsibility. To
    the extent that he was involved in prison
    violence personally, the evidence remains
    consistent that he was the prey rather than the
    predator.
    
    Id. (quoting referee’s
    findings).
    Finally, the referee received “[e]xtensive psychiatric
    testimony” from several expert witnesses who described
    Andrews as suffering from a range of mental disorders,
    including post-traumatic stress disorder and organic brain
    impairment. 
    Id. at 661–62
    (majority opinion) (internal
    quotation mark omitted). Those witnesses testified that the
    ANDREWS V. DAVIS                       15
    impact of Andrews’s experiences in Alabama’s correctional
    institutions “made his behavior understandable and his
    reincarceration predictable.” 
    Id. at 662
    (quoting referee’s
    findings).
    After hearing evidence about the investigative steps that
    were required to uncover this background information, the
    referee found none of it “called for any extraordinary efforts
    beyond simple persistence.” 
    Id. (internal quotation
    marks
    omitted). The referee categorized the available mitigation
    evidence into three “general and partially overlapping”
    areas: (1) “the circumstances of [Andrews’s] upbringing”;
    (2) “the impact of the correctional facilities in Alabama”;
    and (3) “the psychiatric aspects of [Andrews’s] history.” 
    Id. According to
    the referee, counsel “could readily have
    learned about [Andrews’s] upbringing from their contact
    with his mother” and other family members who were
    willing to provide information or to testify. 
    Id. “Several areas
    of inquiry were available relating to [Andrews’s]
    experiences in the correctional system in Alabama,”
    including review of court files of prior convictions, prison
    records, and juvenile records. 
    Id. (internal quotation
    mark
    omitted). Standard “[l]egal research would have produced
    information concerning lawsuits and prison conditions that
    were a matter of public record as to conditions in the penal
    system during that period of time.” As for the availability of
    Andrews’s mental health history, the “[r]outine appointment
    of psychiatric experts” would have provided information to
    dictate whether any additional steps were necessary. In re
    
    Andrews, 52 P.3d at 662
    (alteration in original) (quoting
    referee’s findings).
    The referee also described the insufficient investigative
    steps that counsel actually took. She explained that
    Andrews’s counsel “made only ‘limited’ efforts to gather
    16                    ANDREWS V. DAVIS
    penalty-phase evidence on [Andrews’s] behalf.” 
    Id. at 663.
    They did not use investigators at the penalty phase, nor did
    they have Andrews “examined by a psychologist,
    psychiatrist, or any other mental health expert.” 
    Id. The referee
    also found that they “were severely impeded” in their
    ability to represent Andrews “by their heavy caseloads,
    conducting back-to-back capital cases before and after”
    Andrews’s trial. 
    Id. at 664
    (quoting referee’s findings).
    Andrews’s counsel made two trips to Mobile as part of
    their penalty-phase investigation, each lasting a single day.
    On their first trip, counsel “spent time searching for records”
    relating to Andrews at the courthouse and “driving around []
    in taxis” looking for evidence of Andrews’s “good character
    and good deeds.” 
    Id. at 663.
    On their second trip, Miller
    and Lenoir again reviewed records from the Mobile County
    Courthouse. 
    Id. They then
    interviewed Andrews’s mother
    during a layover at the Pensacola airport. 
    Id. At the
    reference hearing, Miller initially testified that the
    first trip to Alabama included three days of investigation of
    Andrews’s background. He changed that account after being
    confronted with evidence that the lawyers were, in fact, in
    New Orleans for most of the trip. In reality, the lawyers
    spent a single day in Mobile, flying back to New Orleans that
    same day. The dates of the trip coincided with Mardi Gras.
    The second trip to Alabama also began with a stop in
    New Orleans. On the next day, counsel flew to Mobile to
    “check[] the court records,” then traveled to Pensacola to
    interview Andrews’s mother, then flew to Tampa—all in the
    same day. After a day in Tampa, the lawyers then spent five
    days in Miami. Neither New Orleans, Tampa, nor Miami
    have any connection whatsoever to Andrews’s case.
    ANDREWS V. DAVIS                             17
    The referee found that Miller and Lenoir’s investigation
    was limited in part by Andrews’s opposition to his family’s
    participation in the penalty phase. In re 
    Andrews, 52 P.3d at 664
    . Miller testified that he had concerns about introducing
    evidence of Andrews’s incarceration history, as he was “not
    generally impressed with prisoners and did not want to trade
    ‘good acts’ for ‘bad acts.’” 3 
    Id. There were
    no other
    constraints to developing witnesses or a mental health profile
    of Andrews. 
    Id. The referee
    also made findings relating to evidence the
    prosecution might have introduced in aggravation. She
    concluded that, had Andrews’s counsel attempted to
    introduce evidence in mitigation, the prosecution could have
    introduced additional facts about two of Andrews’s prior
    convictions. 
    Id. at 664
    –65. With respect to Andrews’s prior
    murder conviction, a taxi driver could have testified that
    after Andrews and Square escaped from the scene, they
    robbed the driver at gunpoint and Andrews fired at least two
    shots at the driver from thirty feet away. 
    Id. at 665.
    As for
    the robbery, a police officer could have testified that
    Andrews held a young woman hostage at the scene,
    threatening to shoot her and police officers. 
    Id. The referee
    also determined that the prosecution was likely to call its
    own mental health experts to rebut Andrews’s. 
    Id. at 670.
    However, the prosecutor from Andrews’s trial, who had
    become a state court judge in the interim, “testified that if
    the defense had presented evidence of the Alabama prison
    conditions he probably would not have called rebuttal
    witnesses to give details about petitioner’s Alabama crimes.”
    
    Id. at 682
    (Kennard, J., dissenting). The referee did not,
    3
    Andrews’s lead counsel, Lenoir, died before the referee conducted
    the hearing. In re 
    Andrews, 52 P.3d at 663
    n.7. Thus, the referee only
    received testimony from Miller.
    18                  ANDREWS V. DAVIS
    however, credit this testimony. 
    Id. at 665–66
    (majority
    opinion).
    2
    After reviewing these findings, the California Supreme
    Court turned to Andrews’s claim that Miller and Lenoir
    provided ineffective assistance of counsel at the penalty
    phase of his trial.
    First, the California Supreme Court held that Andrews’s
    counsel had not performed deficiently. See 
    id. at 667–70.
    The court acknowledged the referee’s findings that “simple
    persistence” would have yielded much of the mitigation
    evidence presented at the reference hearing and that Miller
    and Lenoir “could well have made a more thorough
    investigation than [they] did.” 
    Id. at 668–69
    (alteration in
    original). But, in the court’s view, Miller and Lenoir’s
    failure to exercise that persistence was excused by
    Andrews’s request that his family not be involved and his
    failure to volunteer information about the abuse he had
    endured. 
    Id. at 668.
    Having concluded that Miller and Lenoir’s preliminary
    investigation was reasonable, the California Supreme Court
    then looked to the reasonableness of the strategy Miller and
    Lenoir apparently adopted—portraying Andrews as a
    “follower” and comparing Andrews’s sentence to the
    sentences imposed in other recent murder cases. 
    Id. at 669.
    The California Supreme Court concluded this approach was
    reasonable. 
    Id. at 669–71.
    Although noting that the
    mitigating evidence Miller and Lenoir failed to present at the
    penalty phase “leaves no doubt [Andrews] endured
    horrifically demeaning and degrading circumstances” in
    Alabama, 
    id. at 671,
    the court ventured that the evidence
    could have backfired because it would have required counsel
    ANDREWS V. DAVIS                       19
    to call a series of inmates as witnesses, “including one death
    row inmate, with serious felony records for murder, rape,
    and armed robbery,” 
    id. at 670–71.
    Second, the California Supreme Court concluded that,
    “[f]or the same reasons” it found Miller and Lenoir had not
    performed deficiently, it also found Andrews had not been
    prejudiced by Miller and Lenoir’s performance. 
    Id. at 671.
    The court then denied Andrews’s habeas petition. 
    Id. at 676.
    Two justices of the California Supreme Court dissented,
    
    id. at 676,
    684, including Justice Kennard, who authored the
    California Supreme Court’s opinion affirming Andrews’s
    conviction and sentence on direct appeal, People v. Andrews,
    
    776 P.2d 285
    (Cal. 1989). After reviewing all the evidence
    adduced at the reference hearing, the dissent concluded that
    it could not “put confidence in the verdict of a jury that
    decided the case without hearing the substantial mitigating
    evidence that competent counsel could and should have
    presented.” In re 
    Andrews, 52 P.3d at 684
    (Kennard, J.,
    dissenting) (internal quotation mark omitted).
    C
    Following the California Supreme Court’s denial of
    Andrews’s state habeas petition, Andrews filed a habeas
    petition in federal district court. His amended petition
    included thirty-two claims. The district court denied relief
    on thirty-one of the thirty-two claims, but granted relief on
    Andrews’s penalty-phase ineffective assistance of counsel
    claim. The district court also granted a certificate of
    appealability for one claim: whether California’s lethal
    injection protocol violates the Eighth Amendment.
    Andrews filed a timely appeal, seeking reversal of the
    district court’s denial of his challenge to California’s lethal
    20                     ANDREWS V. DAVIS
    injection protocol in addition to several uncertified claims.
    The State cross-appealed the district court’s grant of relief
    on Andrews’s ineffective assistance of counsel claim.
    A divided panel of this Court reversed the district court’s
    grant of relief, dismissed Andrews’s challenge to the lethal
    injection protocol as unripe, and otherwise denied the
    petition. Andrews v. Davis, 
    866 F.3d 994
    (9th Cir. 2017).
    We ordered the case reheard en banc. Andrews v. Davis,
    
    888 F.3d 1020
    (9th Cir. 2018).
    II
    We review a district court’s grant or denial of habeas
    relief de novo. Sanders v. Cullen, 
    873 F.3d 778
    , 793 (9th
    Cir. 2017).
    The Antiterrorism and Effective Death Penalty Act of
    1996 (AEDPA), Pub. L. No. 104-132, 110 Stat. 1214,
    governs our review of Andrews’s petition. Under AEDPA,
    we look to the last reasoned state court decision—here, the
    California Supreme Court’s decision—to address the merits
    of Andrews’s claims. Wilson v. Sellers, 
    138 S. Ct. 1188
    ,
    1192 (2018).
    Under AEDPA, we must defer to that state court’s
    decision with respect to any claim adjudicated on the merits,
    see 28 U.S.C. § 2254(d), unless the adjudication of the claim
    involved an “unreasonable application” of clearly
    established federal law as determined by the Supreme Court
    of the United States, 
    id. § 2254(d)(1).
    4 A state court decision
    4
    Deference is also not required when a state court’s decision is
    “contrary to” clearly established federal law as determined by the
    Supreme Court of the United States. 28 U.S.C. § 2254(d)(1). But, as
    explained below, that situation is not present here.
    ANDREWS V. DAVIS                       21
    rests on an “unreasonable application” of federal law where
    a state court identifies the correct governing rule, but
    unreasonably applies that rule to the facts of the prisoner’s
    case. Williams v. Taylor, 
    529 U.S. 362
    , 407–08 (2000).
    An unreasonable application must be “‘objectively
    unreasonable,’ not merely wrong.” White v. Woodall, 
    572 U.S. 415
    , 419 (2014) (internal quotation marks omitted). It
    is not enough that a federal habeas court concludes “in its
    independent judgment that the relevant state-court decision
    applied clearly established federal law erroneously or
    incorrectly.” Lockyer v. Andrade, 
    538 U.S. 63
    , 76 (2003)
    (internal quotation mark omitted). Rather, the decision must
    be “so lacking in justification that there was an error well
    understood and comprehended in existing law beyond any
    possibility for fairminded disagreement.” 
    Richter, 562 U.S. at 103
    .
    Under 8 U.S.C. § 2254(d)(2), deference to a state court
    decision is also not required where the decision is “based on
    an unreasonable determination of the facts in light of the
    evidence presented in the State court proceeding.” A state
    court’s factual findings are “presumed to be correct,” 
    id. § 2254(e)(1),
    and the same standard of unreasonableness
    under § 2254(d)(1) applies under § 2254(d)(2), see Rice v.
    Collins, 
    546 U.S. 333
    , 339, 342 (2006). Unreasonable
    determinations of material facts can occur “where the state
    court[] plainly misapprehend[s] or misstate[s] the record in
    making [its] findings” or where the state court “has before it,
    yet apparently ignores, evidence that supports petitioner’s
    claim.” Taylor v. Maddox, 
    366 F.3d 992
    , 1001 (9th Cir.
    2004), cert. denied, 
    543 U.S. 1038
    (2004), overruled on
    other grounds by Murray v. Schriro, 
    745 F.3d 984
    , 999–
    1000 (9th Cir. 2014).
    22                  ANDREWS V. DAVIS
    Strickland v. Washington and its progeny constitute the
    clearly established federal law governing claims of
    ineffective assistance of counsel. Cullen v. Pinholster, 
    563 U.S. 170
    , 189 (2011) (citing 
    Strickland, 466 U.S. at 668
    ).
    Strickland recognizes that, under the Sixth Amendment, the
    accused has a constitutional right to the effective assistance
    of counsel at the guilt and penalty phases of a capital 
    trial. 466 U.S. at 684
    –87. To establish ineffective assistance
    under Strickland, a prisoner must demonstrate that:
    (1) counsel’s “performance was deficient”; and (2) counsel’s
    “deficient performance prejudiced the defense.” 
    Id. at 687.
    The “ultimate focus” of the Strickland standard is “the
    fundamental fairness of the proceeding whose result is being
    challenged.” 
    Id. at 696.
    To establish deficient performance, a petitioner must
    show that “counsel’s representation fell below an objective
    standard of reasonableness.” 
    Id. at 688.
    “A court
    considering a claim of ineffective assistance must apply a
    ‘strong presumption’ that counsel’s representation was
    within the ‘wide range’ of reasonable professional
    assistance.” 
    Richter, 562 U.S. at 104
    (quoting 
    Strickland, 44 U.S. at 689
    ). With respect to prejudice, a petitioner must
    demonstrate that, “but for counsel’s unprofessional errors,”
    there is a “reasonable probability” that the “result of the
    proceeding would have been different.” 
    Strickland, 466 U.S. at 694
    . In the context of the penalty phase of a capital case,
    it is enough to show “a reasonable probability that at least
    one juror” would have recommended a sentence of life
    instead of death. Wiggins v. Smith, 
    539 U.S. 510
    , 537
    (2003). The likelihood of that result must be “substantial,
    not just conceivable.” 
    Richter, 562 U.S. at 112
    .
    For purposes of our review, the “only question that
    matters” is whether the state court’s decision involved an
    ANDREWS V. DAVIS                            23
    unreasonable application of Strickland’s principles. See
    
    Andrade, 538 U.S. at 71
    . In any ineffectiveness case,
    Strickland sets a high bar for relief. 
    Richter, 562 U.S. at 105
    .
    And, under AEDPA’s deferential standard, that bar is doubly
    difficult to clear. 
    Id. 5 With
    this framework in mind, we turn to Andrews’s
    claim that he received ineffective assistance of counsel at the
    penalty phase of his trial.
    III
    With regard to Strickland’s performance prong, the
    California Supreme Court unreasonably applied clearly
    established federal law in concluding Andrews received
    constitutionally adequate counsel at the penalty phase of his
    trial.
    With their client’s life in the balance, Miller and Lenoir
    performed almost no investigation at the penalty phase.
    Compounding that error, they introduced almost no
    mitigating evidence during the penalty phase, despite the
    ready availability of “substantial and compelling” evidence.
    In re 
    Andrews, 52 P.3d at 680
    (Kennard, J., dissenting).
    The Supreme Court 6 has recognized that reasonable
    assistance will take a variety of forms. See 
    Strickland, 466 U.S. at 688
    –89. Even so, it has never held that counsel may
    forgo a thorough background investigation and wholly fail
    to present evidence in mitigation where readily available,
    5
    Though our dissenting colleague repeatedly accuses us of engaging
    in a de novo review of the California Supreme Court’s decision, we
    understand the appropriate standard of review and apply it here.
    6
    All references to “the Supreme Court” throughout this opinion are
    to the United States Supreme Court, not the California Supreme Court.
    24                   ANDREWS V. DAVIS
    compelling, and non-cumulative mitigating evidence exists.
    Reading Strickland and its progeny to support such a
    conclusion, as the California Supreme Court did here, was
    objectively unreasonable.
    A
    Clearly established federal law required Miller and
    Lenoir to undertake a “reasonable investigation[]” in
    preparation for the penalty phase. 
    Id. at 691.
    While the
    Court has made clear that the nature and scope of a given
    investigation will vary based on the circumstances of the
    case, 
    id. at 688–89,
    the “proper measure” of the adequacy of
    an attorney’s investigation is “reasonableness under
    prevailing professional norms,” 
    id. at 688.
    “American Bar
    Association [(ABA)] standards and the like” are evidence of
    those norms and “guides to determining what is
    reasonable[.]” Id.; see also Rompilla v. Beard, 
    545 U.S. 374
    ,
    387 (2005).
    According to the ABA standards in effect at the time of
    Andrews’s trial, defense counsel had a duty to conduct an
    investigation designed to “explore all avenues leading to
    facts relevant to the merits of the case and the penalty in the
    event of conviction.” Standards for Criminal Justice § 4-4.1
    (Am. Bar Ass’n 1980) (emphasis added). These standards
    recognize that “[i]nvestigation is essential” to fulfilling
    counsel’s “substantial and important” duty to raise
    mitigating factors at sentencing. Id.; see also 
    Wiggins, 539 U.S. at 524
    –25 (considering ABA standards).
    No fair-minded jurist would conclude that Miller and
    Lenoir conducted the requisite “thorough investigation” of
    Andrews’s background at the penalty phase. 
    Williams, 529 U.S. at 396
    .    Indeed, Andrews’s counsel conducted
    ANDREWS V. DAVIS                       25
    “virtually no penalty phase investigation.” In re 
    Andrews, 52 P.3d at 676
    (Kennard, J., dissenting).
    What little investigation did occur consisted of just three
    elements: (1) reviewing files at the courthouse in Mobile;
    (2) speaking with Andrews’s mother during a layover in an
    airport; and (3) driving around Mobile. See 
    id. at 663
    (majority opinion). Although Miller and Lenoir hired
    investigators to work on the guilt phase, neither investigator
    did any penalty-phase work. 
    Id. Nor were
    they asked to.
    Miller and Lenoir failed to conduct “standard legal research”
    concerning the Alabama institutions where Andrews was
    confined as a child. 
    Id. at 662
    . And Miller and Lenoir failed
    to take the “[r]outine” step of having Andrews examined by
    a psychologist, psychiatrist, or any other mental health
    professional. 
    Id. at 662
    –63 (alteration in original). As noted
    above, the referee found that Miller and Lenoir failed to
    exercise “simple persistence” and failed to use “standard
    investigative techniques” in preparing for the penalty phase.
    
    Id. at 662
    (internal quotation marks omitted).
    Each of these steps should have been a standard
    component of counsel’s penalty-phase investigation. And
    even the most basic of investigations would have uncovered
    evidence of the abuse Andrews suffered. See 
    Williams, 529 U.S. at 395
    –96. No fair-minded jurist would conclude that
    Miller and Lenoir’s penalty-phase investigation—one that
    lacked “simple persistence,” “standard investigative
    techniques,” “standard legal research,” and the “[r]outine”
    appointment of expert assistance, In re 
    Andrews, 52 P.3d at 662
    (alteration in original) (internal quotation marks
    omitted)—was reasonable. See 
    Strickland, 466 U.S. at 690
    –
    92; see also 
    Williams, 529 U.S. at 396
    ; 
    Wiggins, 539 U.S. at 524
    ; Porter v. McCollum, 
    558 U.S. 30
    , 39 (2009) (per
    curiam); 
    Rompilla, 545 U.S. at 381
    .
    26                   ANDREWS V. DAVIS
    The California Supreme Court unreasonably applied the
    Supreme Court’s decision in Williams to excuse Miller and
    Lenoir’s failure to undertake a reasonable background
    investigation. See In re 
    Andrews, 52 P.3d at 674
    –75. In
    Williams, counsel began preparing for sentencing one week
    before 
    trial. 529 U.S. at 395
    .        Due to counsel’s
    misunderstanding of state law concerning access to juvenile
    records, counsel failed to fully investigate his client’s early
    life and background. 
    Id. Had counsel
    performed the
    requisite investigation, it would have disclosed a wealth of
    potentially mitigating evidence—including evidence of
    Williams’s “nightmarish” childhood, one “filled with abuse
    and privation.” 
    Id. at 395,
    398. Counsel also failed to
    investigate other avenues for mitigation, such as evidence of
    Williams’s intellectual disability and his good behavior
    while incarcerated. 
    Id. at 396.
    The Supreme Court held that
    the failure to uncover this information “clearly
    demonstrate[d] that trial counsel did not fulfill their
    obligation to conduct a thorough investigation of the
    defendant’s background.” 
    Id. Therefore, the
    Supreme Court
    concluded, the state court was unreasonable to conclude that
    Williams’s counsel performed adequately under Strickland.
    
    Id. 397–98. In
    terms of Miller and Lenoir’s investigation, the most
    substantial distinction between the facts of this case and
    those of Williams is the reason counsel failed to uncover
    information about their clients’ backgrounds. In Williams,
    counsel misunderstood the law. 
    Id. at 395.
    Here, no legal
    misunderstanding stood in the way; Miller and Lenoir
    simply failed to exercise “simple persistence,” failed to use
    “standard investigatory techniques,” and failed to obtain the
    “[r]outine” appointment of mental health experts. In re
    
    Andrews, 52 P.3d at 662
    (alteration in original). Any fair-
    minded jurist would agree that counsel’s failures in Williams
    ANDREWS V. DAVIS                       27
    and here both reflect a failure to adhere to reasonable
    professional standards. No reasonable jurist would conclude
    that one is indicative of deficient performance and the other
    is not.
    B
    Rather than dispute the referee’s findings, the California
    Supreme Court instead unreasonably and remarkably
    excused Miller and Lenoir’s failure to perform an adequate
    penalty-phase     investigation.         Despite    expressly
    acknowledging that Miller and Lenoir could have performed
    a more thorough investigation at the penalty phase, 
    id. at 669,
    the court nonetheless determined that Miller and
    Lenoir’s decision to curtail their investigation was
    reasonable because: (1) Andrews did not want his family
    involved; (2) Andrews did not tell his counsel about the
    abuse he suffered in the past; and (3) the Mt. Meigs evidence
    would have required testimony from inmates, see 
    id. at 668–
    69.
    Each of these justifications turns on an unreasonable
    determination of the record before the California Supreme
    Court. See 28 U.S.C. § 2254(d)(2). These factual
    determinations are not just incorrect; they are directly
    contradicted by other evidence in the record. See 
    Taylor, 366 F.3d at 1001
    .
    (1) Andrews’s refusal to involve his family.
    The California Supreme Court unreasonably excused
    counsel’s failure to undertake a thorough penalty-phase
    investigation because Andrews asked that his family not be
    involved. See In re 
    Andrews, 52 P.3d at 668
    .
    28                   ANDREWS V. DAVIS
    This conclusion by the court is unreasonable for a simple
    reason: As the referee concluded, counsel did not need
    Andrews’s family to uncover evidence of the abuse he
    suffered in Alabama. See 
    id. at 663
    . As the referee found,
    evidence of the conditions at Mt. Meigs either “could have
    been developed by obtaining prison records and contacting
    inmates referenced in those records,” or by conducting
    “standard legal research of public records relating to
    lawsuits involving th[e] institution.” 
    Id. at 662
    (emphasis
    added). Other than not involving his family, Andrews
    imposed no limitation on counsel’s investigation, and the
    referee found no obstacles to obtaining witnesses who were
    not members of Andrews’s family. Id.; see 
    id. at 681
    (Kennard, J., dissenting).
    Moreover, notwithstanding Andrews’s request, counsel
    interviewed Andrews’s mother. 
    Id. at 663
    (majority
    opinion). She knew about Andrews’s history at Mt. Meigs
    and could have provided insight about the effect it had on
    him. 
    Id. But trial
    counsel failed to ask any questions that
    would have elicited this information. 
    Id. (2) Andrews’s
    failure to tell counsel about his past.
    The California Supreme Court also unreasonably
    excused Miller and Lenoir’s limited penalty-phase
    investigation based on Andrews’s failure to affirmatively
    volunteer information. See In re 
    Andrews, 52 P.3d at 668
    .
    Andrews never told his attorneys about his past—nor
    specifically about his time at Mt. Meigs. But nothing
    suggests that counsel ever asked Andrews basic questions
    designed to elicit their client’s life history. See 
    id. at 681
    (Kennard, J., dissenting) (“[Andrews] did not withhold that
    information. His attorneys never raised the subject.”).
    Regardless, as the referee explicitly found: “[A]ll of the
    ANDREWS V. DAVIS                       29
    information that was presented [at the reference hearing]
    could have been developed through outside sources in the
    absence of any cooperation from [Andrews].” 
    Id. at 663
    (majority opinion) (alteration added) (internal quotation
    mark omitted). The California Supreme Court did not
    dispute this finding; it simply ignored it. See 
    id. at 668.
    The California Supreme Court’s reliance on Strickland
    to excuse Miller and Lenoir’s failure to investigate their
    client’s life history, see 
    id., was itself
    unreasonable.
    Strickland recognizes that the reasonableness of counsel’s
    investigation can be “influenced by the defendant’s own
    statements or 
    actions.” 466 U.S. at 691
    . That is, counsel can
    reasonably make judgments based on what a defendant
    actually says. 
    Id. (defining reasonableness
    of investigation
    based on “what the defendant has said” and what “a
    defendant has given counsel reason to believe”). But neither
    Strickland nor its progeny suggest that a client’s failure to
    affirmatively volunteer information about his past relieves
    counsel of the independent duty to investigate it—especially
    when the record suggests counsel never bothered to ask. See
    In re 
    Andrews, 52 P.3d at 681
    (Kennard, J., dissenting). In
    fact, later Supreme Court decisions have explained that the
    opposite is true. A client may be “fatalistic or uncooperative,
    but that does not obviate the need for defense counsel to
    conduct some sort of mitigation investigation.” 
    Porter, 558 U.S. at 40
    .
    To read Strickland as requiring a defendant to, first,
    know what mitigating evidence is, and, second, affirmatively
    volunteer theories of mitigation, is objectively unreasonable.
    Indeed, under clearly established federal law at the time, the
    obligation to develop legal strategy was, and is, the
    responsibility of counsel. See Jones v. Barnes, 
    463 U.S. 745
    ,
    751 (1983). The California Supreme Court’s apparent
    30                  ANDREWS V. DAVIS
    assignment of that responsibility to Andrews was objectively
    unreasonable.
    (3) Reliance on the testimony of inmates.
    The California Supreme Court also unreasonably
    concluded that counsel were justified in curtailing their
    investigation into Andrews’s background because evidence
    of Andrews’s treatment in the Alabama correctional system
    would have required the use of testimony from inmates. See
    In re Andrews, 52 P.3d. at 668–69.
    Again, this conclusion was directly contradicted by the
    record. At the reference hearing, “a federal district judge, a
    priest, a college dean, a clinical psychologist, a longtime
    prison doctor, and the regional director for the Florida
    Bureau of Detention, all . . . gave powerfully effective
    testimony about the shocking conditions” Andrews endured
    at Mt. Meigs and other Alabama institutions. 
    Id. at 681
    (Kennard, J., dissenting). The California Supreme Court’s
    decision to ignore the compelling testimony these witnesses
    could have provided was objectively unreasonable. See 28
    U.S.C. § 2254(d)(2).
    Taken as a whole, the California Supreme Court’s
    reliance on a series of unsupported factual conclusions to
    excuse counsel’s unreasonably limited investigation
    amounts to the type of “‘post hoc rationalization’ for
    counsel’s decisionmaking” the Supreme Court has cautioned
    against. 
    Richter, 562 U.S. at 109
    (quoting 
    Wiggins, 539 U.S. at 526
    –27). Each of the California Supreme Court’s factual
    determinations, individually and collectively, further
    “highlights the unreasonableness of the state court’s
    decision.” 
    Wiggins, 539 U.S. at 528
    .
    ANDREWS V. DAVIS                      31
    C
    Having excused Miller and Lenoir’s investigation, the
    California Supreme Court determined that Miller and Lenoir
    chose their penalty-phase strategy “[i]nstead of a lengthy
    presentation of a broad range of witnesses” documenting
    Andrews’s background. In re 
    Andrews, 52 P.3d at 669
    (emphasis added). But choosing a strategy implies the
    weighing of competing approaches. Miller and Lenoir
    simply did not know about Andrews’s background, so they
    could not have intelligently chosen one strategy over
    another. See 
    id. at 676–77
    (Kennard, J., dissenting). Here,
    counsel failed at the outset to investigate thoroughly,
    rendering later penalty-phase decisions a product of
    “inattention, not reasoned strategic judgment.” 
    Wiggins, 539 U.S. at 526
    . Only by unreasonably applying Strickland
    and its progeny did the California Supreme Court conclude
    counsel’s performance was adequate.
    In Strickland, the Supreme Court held it was reasonable
    for counsel to fail to introduce evidence that would “barely
    have altered the sentencing profile” and would have opened
    the door to potentially damaging aggravating 
    evidence. 466 U.S. at 700
    . So too in Darden v. Wainwright, counsel’s
    decision to pursue an alternate strategy at sentencing was
    reasonable because evidence regarding defendant’s
    background could have opened the door to his prior
    convictions, which had not been admitted in evidence. See
    
    477 U.S. 168
    , 186 (1986).
    That was not the situation confronted by Andrews’s
    counsel. First, the evidence of Andrews’s “nightmarish
    childhood” would have altered Andrews’s sentencing profile
    substantially. As the Supreme Court has recognized,
    omission of this type of critical mitigating evidence can
    prejudice a capital defendant. See 
    Williams, 529 U.S. at 395
    .
    32                      ANDREWS V. DAVIS
    Second, the jury already knew about Andrews’s prior
    crimes. When a defendant’s prior criminal history is already
    known to the jury, counsel performs unreasonably in not
    presenting a range of persuasive mitigating evidence about
    the defendant’s background that “no other source had
    opened up.” See 
    Rompilla, 545 U.S. at 390
    (finding counsel
    deficient when counsel knew the prosecution would
    introduce at the penalty phase defendant’s “significant
    history” of prior violent crimes, but counsel nevertheless
    failed to review the readily available prior conviction file). 7
    No reasonable jurist would conclude otherwise. 8
    The California Supreme Court relied on the Supreme
    Court’s decision in Burger v. Kemp, 
    483 U.S. 776
    (1987), to
    conclude that counsel’s penalty-phase strategy—portraying
    Andrews as a “follower” and arguing that others, including
    Andrews’s co-defendant Sanders, had received lighter
    7
    Although the Supreme Court decided Rompilla after the California
    Supreme Court denied Andrews’s habeas petition, Rompilla is still
    relevant to assessing whether the court unreasonably applied Strickland
    for purposes of AEDPA deference. See 
    Wiggins, 539 U.S. at 522
    (approving reliance on Supreme Court opinions issued after state court’s
    decisions where the merits are governed by Strickland). Rompilla is
    particularly instructive in light of its application of AEDPA deference to
    the deficient-performance analysis. 
    See 545 U.S. at 380
    .
    8
    The fact that the jury did not hear details of Andrews’s prior
    offenses has no bearing on the reasonableness of counsel’s decision to
    forgo a case in mitigation. Had counsel’s choice “foreclosed the
    introduction” of this evidence, as the California Supreme Court found,
    In re 
    Andrews, 52 P.3d at 669
    , that of course could have affected our
    assessment of counsel’s strategy. But the California Supreme Court
    made clear that the evidence of Andrews’s prior crimes would have been
    admissible to rebut the defense case which was presented. 
    Id. at 666.
    The happenstance that the aggravating evidence was not presented is
    therefore not attributable to counsel’s strategy and, because we assess a
    lawyer’s choices “from counsel’s perspective at the time,” 
    Strickland, 466 U.S. at 689
    , it does not factor into our deficiency analysis.
    ANDREWS V. DAVIS                       33
    sentences—was a reasonable strategy. In re 
    Andrews, 52 P.3d at 669
    .
    But “[t]his case is not at all like Burger.” 
    Id. at 682
    (Kennard, J. dissenting). In Burger, the penalty-phase
    strategy that counsel ultimately adopted—attempting to
    minimize culpability by portraying his client as a follower—
    was reasonable because it was supported by the record
    before the jury. 
    See 483 U.S. at 779
    (noting evidence at trial
    showed Burger’s co-defendant was primarily responsible for
    the crime).
    Here, portraying Andrews as a follower was “a
    disastrous strategy, one no reasonably competent attorney
    would have used.” In re 
    Andrews, 52 P.3d at 682
    (Kennard,
    J., dissenting). With regard to his crimes of conviction, “the
    only evidence before the jury was that [Andrews] was the
    instigator rather than a follower.” 
    Id. Moreover, because
    the
    evidence showed Andrews was the instigator and “Sanders
    was the follower,” the “jurors were not likely to be troubled
    by Sanders’s lighter sentence.” 
    Id. It is
    objectively
    unreasonable to conclude, as the California Supreme Court
    did, that a penalty-phase strategy is reasonable when it is
    directly contradicted by the evidence in the record.
    Further, in Burger, defense counsel performed a
    reasonable initial mitigation investigation, speaking to a
    family member, a friend, and a psychologist to learn about
    his client’s background. 
    See 483 U.S. at 790
    –91. By
    contrast, counsel’s background investigation here only
    consisted of speaking to Andrews’s mother, pulling court
    files, and “driving around” Mobile looking for mitigating
    evidence. In re 
    Andrews, 52 P.3d at 663
    . Counsel failed to
    speak to any other friends or family, failed to conduct
    “standard legal research,” and failed to take the “[r]outine”
    34                   ANDREWS V. DAVIS
    step of having Andrews evaluated by a mental health
    professional. 
    Id. at 662
    (alteration in original).
    The California Supreme Court observed that the
    “defendant in Burger endured a worse childhood” than
    Andrews. 
    Id. at 673.
    But this conclusion, too, is
    unreasonable. While the defendant in Burger had an
    “exceptionally unhappy and unstable 
    childhood,” 483 U.S. at 789
    , nothing suggests Burger endured anything
    comparable to—let alone worse than—the violent beatings
    and degrading physical abuse Andrews suffered as a child at
    Mt. Meigs. Thus, contrary to the California Supreme
    Court’s conclusion, Burger does not present “comparable
    facts” to Andrews’s case. In re Andrews, 52 P.3d. at 673.
    The California Supreme Court also unreasonably applied
    Bell v. Cone, 
    535 U.S. 685
    (2002), to support its conclusion
    that Andrews’s counsel performed adequately. Though the
    court correctly noted that counsel in Cone “presented no
    penalty phase evidence and waived closing argument,” In re
    
    Andrews, 52 P.3d at 673
    (citing 
    Cone, 535 U.S. at 699
    –702),
    the court ignored the fact that, in Cone, defense counsel
    actually introduced substantial mitigating evidence at the
    guilt phase of the trial, see 
    Cone, 535 U.S. at 699
    . “Because
    the defense’s theory at the guilt phase was not guilty by
    reason of insanity, [Cone’s] counsel was able to put before
    the jury extensive testimony about what he believed to be the
    most compelling mitigating evidence in the case . . . .” 
    Id. (emphasis added).
    This included testimony from Cone’s
    mother about her son and the changes Cone underwent after
    serving in the Vietnam War, among other humanizing
    testimony. 
    Id. at 690.
    Thus, the question in Cone was whether counsel was
    deficient for failing to re-call those witnesses at the penalty
    phase. 
    Id. at 699–700.
    Because Cone’s jury heard this
    ANDREWS V. DAVIS                      35
    mitigating evidence at the guilt phase and was instructed to
    consider it at sentencing, the Supreme Court determined
    counsel’s decision not to reintroduce the mitigating evidence
    was reasonable. 
    Id. But Cone
    does not support the blanket
    proposition, as the California Supreme Court apparently
    concluded, that counsel can altogether forgo the introduction
    of substantial mitigating evidence where such evidence in
    fact exists. See In re 
    Andrews, 52 P.3d at 668
    , 673. That
    interpretation of Cone is objectively unreasonable.
    The California Supreme Court also cited Cone for the
    proposition that counsel may reasonably decide not to
    present background evidence when testimony about a
    defendant’s “normal youth” might, in the eyes of the jury, be
    perceived negatively and cut the other way. See 
    id. at 673
    (referring to counsel’s remark that Andrews’s childhood
    neighborhood was “comparable to his own”). However, all
    reasonable jurists would agree that the years Andrews spent
    at Mt. Meigs were the antithesis of a “normal youth.” The
    California Supreme Court’s reliance on Cone, while
    simultaneously ignoring the fact that Andrews’s youth
    included his experience at Mt. Meigs, was objectively
    unreasonable.
    If any doubt remained about the unreasonableness of the
    California Supreme Court’s application of Strickland’s
    deficiency prong, the court’s repeated, approving reliance on
    the Fourth Circuit’s decision in Wiggins—a decision the
    Supreme Court subsequently reversed—puts those doubts to
    rest. See 
    id. at 668,
    669, 671, 676 (citing Wiggins v.
    36                      ANDREWS V. DAVIS
    Corcoran, 
    288 F.3d 629
    (4th Cir. 2002), rev’d sub nom.
    Wiggins v. Smith, 
    539 U.S. 510
    (2003)). 9
    In Wiggins, counsel’s investigation was limited to three
    sources: (1) psychological testing; (2) a presentence report;
    (3) and records from the Baltimore City Department of
    Social 
    Services. 539 U.S. at 523
    . Although Wiggins’s
    attorneys had some cursory understanding of their client’s
    background, their investigation failed to fully uncover
    evidence of Wiggins’s “harsh childhood,” including
    physical and sexual abuse as a child, and “sub-average
    mental capacity.” Wiggins v. 
    Corcoran, 288 F.3d at 635
    ,
    640. Nevertheless, applying AEDPA deference, the Fourth
    Circuit determined the Maryland state court’s application of
    Strickland’s deficiency prong was not unreasonable
    notwithstanding counsel’s failure to uncover and present
    reasonably available and compelling mitigating evidence.
    See 
    id. at 639–43.
    The Supreme Court reversed. 
    Wiggins, 539 U.S. at 519
    .
    Just as it had in Williams, the Court in Wiggins
    recognized that counsel “abandon[ed] their investigation at
    an unreasonable juncture,” thereby failing to conduct the
    requisite, thorough background investigation Strickland
    generally requires. 
    Id. at 527–28.
    That failure, in turn, made
    it “impossible” to provide a “fully informed decision with
    respect to sentencing strategy.” 
    Id. Even under
    AEDPA’s
    deferential standard, the Supreme Court held that the
    Maryland state court had unreasonably applied Strickland by
    9
    Although the Supreme Court’s decision in Wiggins was issued
    after the California Supreme Court decided Andrews’s case, the
    Supreme Court “made no new law” in resolving Wiggins’s federal
    habeas petition. 
    Wiggins, 539 U.S. at 522
    (describing similar situation
    in Williams). Wiggins is thus “illustrative of the proper application” of
    the Strickland standard in a federal habeas case under AEDPA—an
    application the Fourth Circuit performed improperly. 
    Id. ANDREWS V.
    DAVIS                       37
    “deferring to counsel’s decision not to pursue a mitigation
    case despite their unreasonable investigation.” 
    Id. at 534.
    That the California Supreme Court saw the Fourth
    Circuit’s decision—one subsequently reversed by the
    Supreme Court for endorsing an improper application of
    AEDPA to a Strickland claim—as providing substantial
    support for its analysis should settle any doubt about the
    reasonableness of the California Supreme Court’s own
    application of the Strickland standard. Like the Maryland
    state court and the Fourth Circuit, the California Supreme
    Court unreasonably applied Strickland to excuse counsel’s
    failures at the penalty phase.
    The duty to conduct a thorough investigation of a capital
    defendant’s background is imposed on counsel to prevent
    this very circumstance: a man sentenced to death without
    consideration of non-cumulative, readily available evidence
    of compelling mitigating value. Here, the only reasonable
    interpretation of Supreme Court precedent and the facts of
    this case lead to the following conclusions: (1) that Miller
    and Lenoir failed in their duty to undertake a reasonable
    investigation at the penalty phase of Andrews’s trial; (2) that
    Miller and Lenoir’s choices cannot be rationalized as
    “strategic” or “tactical;” and (3) that any reasonably
    competent attorney would have discovered and introduced
    the substantial and compelling mitigating evidence that
    existed. No fair-minded jurist would conclude otherwise.
    IV
    Turning to Strickland’s prejudice prong, the California
    Supreme Court concluded that Andrews suffered no
    prejudice from the omission of the substantial and
    compelling mitigating evidence that Miller and Lenoir could
    have introduced, but did not. That conclusion, too, turns on
    38                       ANDREWS V. DAVIS
    an objectively unreasonable application of Strickland and its
    progeny.
    In fact, the California Supreme Court hardly engaged in
    the reweighing of evidence that Strickland’s prejudice
    analysis requires. The totality of the California Supreme
    Court’s prejudice analysis consisted of the following
    assertion:
    For the same reasons [Andrews’s counsel
    were not deficient], it is not “reasonabl[y]
    proba[ble]” petitioner was prejudiced by
    counsel’s rejection of a defense premised on
    evidence of petitioner’s upbringing, the
    Alabama prison conditions he experienced,
    and his mental health in light of the
    circumstances of the crimes, given the
    ambiguous nature of some mitigating
    evidence and the substantial potential for
    damaging rebuttal.
    In re 
    Andrews, 52 P.3d at 671
    (alterations in original)
    (citation omitted). With the exception of a later aside about
    the jury’s apparent unwillingness to entertain a life sentence,
    
    id. at 675–76,
    10 the court said nothing more about prejudice.
    Strickland’s two prongs serve separate purposes. The
    deficiency analysis looks to counsel’s adherence to
    reasonable professional standards, 
    see 466 U.S. at 689
    –91,
    10
    The California Supreme Court noted: “[T]he record here contains
    no indication the jury was inclined to sentence petitioner to life
    imprisonment and might have been persuaded by additional or alternate
    mitigation evidence.” In re 
    Andrews, 52 P.3d at 675
    –76. This approach,
    however, is flatly contradicted by Strickland itself, which insists that the
    prejudice determination should be unaffected by “evidence about the
    [jury’s] actual process of 
    decision.” 466 U.S. at 695
    .
    ANDREWS V. DAVIS                       39
    while prejudice looks to the weight of the available evidence
    and its effect on the case, see 
    id. at 693–95.
    Though the
    deficiency analysis may shed light on the prejudice analysis,
    it is improper to simply conflate the two, as the California
    Supreme Court largely did here. See Sears v. Upton, 
    561 U.S. 945
    , 954 n.10, 955 (2010) (per curiam). Our dissenting
    colleague’s insistence that the California Supreme Court
    “rigorously” and “carefully” applied Strickland’s prejudice
    analysis is especially odd given that the court dispensed with
    its analysis in two sentences. See Dissent at 60, 76.
    Nevertheless, we assume the California Supreme Court’s
    failure to actually engage in the prejudice inquiry, alone, is
    insufficient to justify granting the writ. AEDPA demands
    that “state-court decisions be given the benefit of the doubt,”
    Cullen v. Pinholster, 
    563 U.S. 170
    , 181 (2011) (internal
    quotation marks omitted), and a state court’s decision need
    not cite or even be aware of controlling Supreme Court
    precedent, so long as it does not contravene those
    precedents, Early v. Packer, 
    537 U.S. 3
    , 8 (2002) (per
    curiam).
    Even so, giving the California Supreme Court’s decision
    all the deference it is due along with every benefit of the
    doubt, only an unreasonable application of Strickland’s
    principles could lead to the conclusion that Andrews was not
    prejudiced by counsel’s deficient representation at the
    penalty phase.
    The jurors who sentenced Andrews to death did so
    “knowing hardly anything about him.” 
    Porter, 558 U.S. at 33
    . Had the jury heard that Andrews—at an “extremely
    vulnerable and sensitive age”—was subjected to brutal,
    inhumane, and degrading abuse by his state custodians at a
    segregated “penal colony” for African American children in
    Alabama in the 1960s, In re 
    Andrews, 52 P.3d at 662
    , 684,
    40                   ANDREWS V. DAVIS
    there is a reasonable probability that at least one juror would
    have been swayed to exercise mercy and spare Andrews’s
    life, see 
    Wiggins, 539 U.S. at 537
    .
    Without having heard this substantial and compelling
    mitigating evidence, the jury could not fairly gauge
    Andrews’s moral culpability at sentencing. See 
    Porter, 558 U.S. at 41
    . No fair-minded jurist would disagree.
    A
    Under clearly established federal law, consideration of
    the defendant’s life history is a “constitutionally
    indispensable part of the process of inflicting the penalty of
    death.” Eddings v. Oklahoma, 
    455 U.S. 104
    , 112 (1982)
    (internal quotation marks omitted).
    Though mitigating life history evidence does not excuse
    heinous crimes, it places a defendant’s crimes in context,
    allowing jurors to impose a sentence reflecting a “reasoned
    moral response to the defendant’s background, character,
    and crime.” Penry v. Lynaugh, 
    492 U.S. 302
    , 319 (1989)
    (internal quotation marks omitted), abrogated on other
    grounds by Atkins v. Virginia, 
    536 U.S. 304
    (2002).
    Evidence of abuse inflicted as a child is especially
    mitigating, and its omission is thus particularly prejudicial.
    “[Y]outh is more than a chronological fact. It is a time and
    condition of life” that indelibly shapes a person. 
    Eddings, 455 U.S. at 115
    . A jury’s consideration of abuse and
    disadvantage suffered during this formative time is
    especially critical, given our society’s “long held” belief that
    “defendants who commit criminal acts that are attributable
    to a disadvantaged background . . . may be less culpable than
    defendants who have no such excuse.” Boyde v. California,
    ANDREWS V. DAVIS                      41
    
    494 U.S. 370
    , 382 (1990) (emphasis omitted) (internal
    quotation marks omitted).
    At sentencing, Miller and Lenoir presented almost no
    evidence in mitigation. “The only evidence before the jury”
    was that Andrews “had killed three people” and that he “had
    four prior felony convictions.” In re 
    Andrews, 52 P.3d at 684
    (Kennard, J., dissenting). The jury knew nothing about
    Andrews’s background—not the “inhumane conditions” he
    endured as a child at Mt. Meigs; not the “abysmal”
    conditions in Alabama’s correctional system; not the views
    of mental health experts, that these degrading experiences in
    state institutions rendered Andrews’s later criminal behavior
    understandable and predictable. 
    Id. Indeed, this
    type of life history evidence—a background
    of severe abuse, neglect, and disadvantage—is important to
    a sentencer’s accurate determination of the defendant’s
    moral culpability. See 
    Wiggins, 539 U.S. at 534
    –35; 
    Porter, 558 U.S. at 41
    . Under clearly established law at the time,
    the degrading abuse Andrews suffered at Mt. Meigs is
    precisely the sort of “troubled history” the Supreme Court
    has recognized as relevant in aiding the jury’s evaluation of
    the defendant. 
    Wiggins, 539 U.S. at 535
    (citing 
    Penry, 492 U.S. at 319
    ).
    The California Supreme Court—to the extent it engaged
    with any governing Supreme Court precedent in conducting
    its prejudice analysis—did so in an objectively unreasonable
    way. For example, in Williams, the Supreme Court held
    there was a reasonable probability of a different result at
    sentencing if counsel had presented evidence of defendant’s
    “nightmarish childhood” or his intellectual disability. 
    See 529 U.S. at 395
    , 398. But the California Supreme Court’s
    conclusion that Williams was “plainly distinguishable” from
    Andrews’s case turned on at least two objectively
    42                      ANDREWS V. DAVIS
    unreasonable analytical flaws. In re 
    Andrews, 52 P.3d at 674
    .
    First, the California Supreme Court failed to
    acknowledge the substantial aggravating evidence that
    existed in Williams. The court suggested the aggravating
    facts of Andrews’s “brutal triple murder” paled in
    comparison to Williams, where “Williams turned himself in,
    alert[ed] police to a crime they otherwise would never have
    discovered, express[ed] remorse for his actions, and
    cooperat[ed] with the police after that.” 
    Id. at 675
    (alterations in original) (quoting 
    Williams, 529 U.S. at 398
    ).
    But distinguishing the two cases—by comparing the
    aggravating facts of Andrews’s case to mitigating facts in
    Williams—is objectively unreasonable. Indeed, comparison
    of the actual aggravating facts in Williams shows that both
    cases involved severe aggravation. In Williams, the jury
    heard evidence that, in the months after the capital murder,
    “Williams savagely beat an elderly woman, stole two cars,
    set fire to a home, stabbed a man during a robbery, set fire to
    the city jail, and confessed to having strong urges to choke
    other inmates and to break a fellow prisoner’s 
    jaw.” 529 U.S. at 418
    (Rehnquist, C.J., concurring in part and
    dissenting in part) (internal quotation marks omitted). 11 One
    of Williams’s elderly victims was left in a vegetative state.
    
    Id. at 368
    (majority opinion) (internal quotation marks
    omitted). And two expert witnesses testified for the
    prosecution at sentencing “that there was a ‘high probability’
    that Williams would pose a serious continuing threat to
    society.” 
    Id. at 368
    –69. Although the aggravating facts in
    this case are undeniably severe, they are largely similar to
    11
    We cite to Chief Justice Rehnquist’s concurring opinion in
    Williams for its vivid recitation of facts—not, as the dissent complains,
    see Dissent at 88 n.9, for conclusions of law.
    ANDREWS V. DAVIS                            43
    those in Williams, not “plainly distinguishable,” as the
    California Supreme Court unreasonably concluded. In re
    
    Andrews, 52 P.3d at 674
    .
    The California Supreme Court also unreasonably
    compared the mitigating facts of Williams to Andrews’s
    case. According to the court, Williams had an “extremely
    harsh family life, qualitatively worse than [Andrews’s]”
    family life. 
    Id. The court
    was correct that Williams’ family
    life was far more abusive than Andrews’s was. However,
    the court again ignored that Andrews’s childhood—in
    particular, the years he spent at Mt. Meigs—was marked by
    “inhumane” treatment and abuse, at least equal in magnitude
    to that suffered by Williams. 12 
    Id. at 684
    (Kennard, J.,
    dissenting). Additionally, the court ignored the fact that,
    unlike in this case, Williams’s counsel actually presented
    mitigating evidence, including testimony from Williams’s
    mother, two neighbors, and a psychiatrist. 
    Williams, 529 U.S. at 369
    .
    Under Williams, the California Supreme Court’s
    prejudice analysis was unreasonable. Here, the total
    evidence in aggravation—that which was admitted and that
    which may have come in as rebuttal evidence concerning
    Andrews’s prior violent crimes—is significant, just as in
    Williams. And, as in Williams, the undiscovered and
    unadmitted mitigating evidence in Andrews’s case includes
    severe and sustained physical, sexual, and psychological
    abuse during childhood—precisely the type of evidence the
    12
    The dissent emphasizes that Williams’s early childhood was more
    difficult than Andrews’s, Dissent at 86—a point we acknowledge. That
    concession, however, does not alter the fact that both Williams and
    Andrews endured substantial abuse as children. It is that fact—abuse
    during the “formative years of childhood and adolescence,” 
    Eddings, 455 U.S. at 115
    –16—that matters for mitigation purposes, not the precise age
    when the abuse occurred.
    44                     ANDREWS V. DAVIS
    Supreme Court has recognized is essential to a jury’s
    informed appraisal of moral culpability at sentencing. See
    
    Williams, 529 U.S. at 395
    –98; see also 
    id. at 415–16
    (O’Connor, J., concurring).
    Although decided after the California Supreme Court
    rendered its decision in Andrews, the Supreme Court’s
    decision     in    Porter    further    demonstrates      the
    unreasonableness of the California Supreme Court’s
    conclusion. 13 There, due to counsel’s failure to adequately
    investigate Porter’s background, the jury that sentenced him
    to death never knew that he had been abused as a child or
    that he was a decorated Korean War veteran suffering from
    post-traumatic stress disorder. See 
    Porter, 558 U.S. at 40
    –
    44. Even under AEDPA deference, the Supreme Court
    concluded that the state court’s determination—that Porter
    had not been prejudiced at sentencing by the omission of this
    key life-history evidence—was unreasonable. See 
    id. at 42.
    The Supreme Court held that, without considering critical
    mitigating evidence of the defendant’s background, the
    sentencer was unable to accurately gauge the defendant’s
    moral culpability. 
    Id. at 41,
    44. Habeas relief was thus
    warranted because confidence in the sentence had been
    undermined. 
    Id. at 44;
    see also 
    Rompilla, 545 U.S. at 393
    .
    As in Williams, the Supreme Court in Porter affirmed
    that a strong case in aggravation does not preclude a finding
    that a state court was unreasonable in denying habeas relief.
    Porter stood convicted of two murders and faced
    13
    Porter, like Rompilla, was decided after the California Supreme
    Court denied Andrews’s habeas petition. But for the reasons described
    above, see supra note 7, the decision is nonetheless instructive,
    especially in light of Porter’s application of AEDPA deference to the
    prejudice 
    question. 558 U.S. at 41
    .
    ANDREWS V. DAVIS                             45
    considerable evidence of premeditation, but the Supreme
    Court nonetheless held the state court’s application of
    Strickland was objectively unreasonable. 
    Porter, 558 U.S. at 31
    . 14
    Thus, in Porter and in Williams, there was simply “too
    much mitigating evidence that was not presented to now be
    ignored.” 
    Id. at 44
    (internal quotation marks omitted). The
    same is true here.
    The California Supreme Court’s conclusion to the
    contrary—that Andrews was not prejudiced by the omission
    of substantial and compelling mitigation evidence at
    sentencing—was objectively unreasonable.
    B
    Had Miller and Lenoir performed competently, the
    evidence counsel could have presented to the jury in
    mitigation—particularly the evidence of Andrews’s abusive
    and degrading treatment at Mt. Meigs—was “substantial and
    compelling.” In re 
    Andrews, 52 P.3d at 680
    (Kennard, J.,
    dissenting).
    Any reasonably competent attorney would have
    presented the Mt. Meigs evidence to the jury. Mt. Meigs was
    a “slave camp for children.” 
    Id. at 677
    (emphasis added)
    (internal quotation marks omitted). There, at an “extremely
    vulnerable and sensitive age,” Andrews was subjected to
    “appalling” treatment, including “beatings, brutality,
    inadequate conditions and sexual predators.” 
    Id. at 660
    –62
    (majority opinion). As the California Supreme Court
    14
    The dissent repeatedly attempts to paint the crimes at issue in
    Porter as crimes of passion. Dissent at 89. In doing so, it overlooks the
    jury’s finding that Porter’s two murders were “committed in a cold,
    calculated, and premeditated 
    manner.” 558 U.S. at 32
    .
    46                     ANDREWS V. DAVIS
    acknowledged, all the available evidence leaves “no doubt”
    that, as a child, Andrews “endured horrifically demeaning
    and degrading circumstances.” 
    Id. at 670.
    Other mitigating evidence, though it did not rise to the
    level of the Mt. Meigs evidence, nonetheless offered
    additional mitigating value. Andrews’s later conditions of
    confinement were “abysmal,” and witnesses testified that
    Andrews was “personally subjected to sexual assaults” in
    these institutions. 
    Id. at 661
    (internal quotation marks
    omitted). Mental health experts could have provided
    testimony explaining the relationship between the degrading
    abuse suffered by Andrews in the state institutions and the
    crimes he ultimately committed. 
    Id. at 661–62
    . And
    evidence of Andrews’s family background and the poor,
    segregated circumstances of his youth could have helped
    jurors understand the factors that might have contributed to
    Andrews’s institutionalization at a young age. 
    Id. at 660
    . 15
    Every jurist to review the facts of this case has
    recognized the extraordinary nature of the mitigating
    evidence that Andrews could have presented. The referee
    described the mitigation evidence as “compelling.” 
    Id. at 662
    . The California Supreme Court majority described the
    conditions Andrews was subjected to in Alabama as
    “horrifically demeaning and degrading.” 
    Id. at 670.
    The two
    dissenting justices described the mitigating evidence as
    “substantial and compelling.” 
    Id. at 680
    (Kennard, J.,
    dissenting). And the federal district court likewise observed
    that the evidence of “the horrendous conditions at Mt.
    Meigs, the abysmal conditions in the Alabama prisons, and
    the violence and sexual privations inflicted upon” Andrews
    15
    Contrary to the dissent’s suggestion, see Dissent at 81 n.6, we
    need not and do not rely on Andrews’s argument that the jury would have
    viewed his behavior in prison as a mitigating factor.
    ANDREWS V. DAVIS                       47
    was “compelling.” Andrews v. Wong, No. 02-CV-8969-R,
    slip. op. at 31 (C.D. Cal. July 27, 2009) (order granting in
    part petition for writ of habeas corpus). We agree, and we
    hold that the California Supreme Court was “unreasonable
    to discount to irrelevance” mitigating evidence of the kind
    present here. 
    Porter, 558 U.S. at 43
    .
    Contrary to the state court’s reasoning, see In re
    
    Andrews, 52 P.3d at 670
    –71, with which the dissent is in
    apparent agreement, see Dissent at 77–82, concerns about
    the possible double-edged nature of some of the mitigating
    evidence or about possible rebuttal evidence do not diminish
    the significance of the available evidence. As described
    above, counsel could have presented the most substantial
    mitigating evidence—the Mt. Meigs evidence—without the
    testimony of inmates and without going into detail about
    Andrews’s incarceration history, thus avoiding any concerns
    about its “double-edged” nature. Additionally, aggravating
    evidence about the specific details of Andrews’s past crimes
    was of limited concern because the jury already knew, from
    Andrews’s heinous crimes of conviction and from the
    stipulated prior convictions, that Andrews was antisocial and
    “had become desensitized and inured to violence and
    disrespect for the law.” 
    Id. at 671.
    The aggravating factors
    in this case are, undoubtedly, substantial; no person
    considering Andrews’s crimes of conviction would conclude
    otherwise. The California Supreme Court accurately
    observed that the “crimes evinced a callous disregard for
    human life.” 
    Id. But again,
    that is all the jurors knew about
    Andrews. See 
    Porter, 558 U.S. at 33
    . His counsel presented
    next to nothing to counter the prosecution’s portrayal of their
    client. Counsel called no witnesses and offered no
    statements from family or friends. In short, counsel offered
    no reason for the jury to exercise mercy.
    48                    ANDREWS V. DAVIS
    Moreover, this is decidedly not a case where the new
    mitigating evidence “would barely have altered the
    sentencing profile,” 
    Strickland, 466 U.S. at 700
    , or where the
    new evidence “largely duplicated the mitigation evidence”
    that had already been admitted, 
    Pinholster, 563 U.S. at 200
    .
    Here, nothing was done in mitigation—despite the existence
    of a substantial and compelling mitigating case. Strickland
    recognizes that some errors by counsel will have “pervasive
    effect[,] . . . altering the entire evidentiary 
    picture.” 466 U.S. at 695
    –96. Counsel’s errors had such a pervasive effect here,
    skewing the evidence at the penalty phase and depriving the
    jury that sentenced Andrews to death from hearing critical
    mitigating evidence. See 
    id. at 696.
    Our conclusion—that
    there is a reasonable probability that at least one juror would
    have been swayed by this mitigating evidence,
    notwithstanding possible rebuttal evidence—does not
    overstep or neglect the limitations of our role as a federal
    habeas court, as our dissenting colleague repeatedly insists.
    Instead, our opinion recognizes only that Andrews’s
    counsel’s failure to put on any case in mitigation at the
    penalty phase of his capital trial—despite the ready
    availability of substantial and compelling mitigating
    evidence—represents the type of extreme malfunction in a
    state’s criminal justice system that justifies federal court
    intervention. We have an unflinching obligation to correct
    constitutional errors of the magnitude present here. Under
    clearly established Supreme Court precedent, trial counsel’s
    failure deprived Andrews of a fair sentencing proceeding,
    rendering Andrews’s death sentence “unreliable.” 
    Id. Accordingly, the
    California Supreme Court was
    objectively unreasonable in concluding there was no
    reasonable probability that at least one juror in Andrews’s
    trial—in Los Angeles, in 1984—would have been persuaded
    that the violent and degrading abuse Andrews suffered as a
    ANDREWS V. DAVIS                             49
    child at the hands of his state custodians—in segregated
    institutions in Alabama, in the mid-1960s—compelled some
    measure of mercy and a sentence of life without the
    possibility of parole, rather than death.
    V
    We therefore AFFIRM the district court’s grant of
    sentencing relief, DISMISS the Eighth Amendment lethal
    injection claim as unripe, 16 and DENY the request for a
    COA of Andrews’s uncertified claims.
    16
    Because California’s lethal injection protocol was not in place at
    the time the district court ruled, the claim was unripe and the district
    court erred in entertaining it. See Payton v. Cullen, 
    658 F.3d 890
    , 893
    (9th Cir. 2011).
    50   ANDREWS V. DAVIS
    APPENDIX A
    ANDREWS V. DAVIS                                  51
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    52                       ANDREWS V. DAVIS
    1991
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    ER000413
    ANDREWS V. DAVIS                                 53
    1992
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    54                       ANDREWS V. DAVIS
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    ANDREWS V. DAVIS                                  55
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    56                       ANDREWS V. DAVIS
    1995
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    ANDREWS V. DAVIS                                  57
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    ER000419
    ANDREWS V. DAVIS                                  59
    1998
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    ER000420
    60                      ANDREWS V. DAVIS
    N.R. SMITH, Circuit Judge, concurring in part and
    dissenting in part, with whom RAWLINSON and OWENS,
    Circuit Judges, join:
    When will my colleagues quit ignoring the Supreme
    Court’s repeated reminders to us that “[t]he role of a federal
    habeas court is to ‘guard against extreme malfunctions in the
    state criminal justice systems’”? Davis v. Ayala, 
    135 S. Ct. 2187
    , 2202 (2015) (quoting Harrington v. Richter, 
    562 U.S. 86
    , 102–03 (2011)). That, under the Antiterrorism and
    Effective Death Penalty Act of 1996 (“AEDPA”), our role
    on habeas review is a limited one?
    The California Supreme Court rigorously applied the test
    for evaluating prejudice in this context and reasonably
    concluded that Andrews was not prejudiced by his counsel’s
    deficient performance during sentencing. 1 Because the
    California Supreme Court’s conclusions regarding prejudice
    were not “beyond any possibility for fairminded
    disagreement,” 
    Richter, 562 U.S. at 103
    , Andrews cannot
    establish prejudice under Strickland v. Washington, 
    466 U.S. 668
    (1984). As the California Supreme Court did not
    unreasonably apply Strickland or any other decision of the
    United States Supreme Court, no “extreme malfunction”
    occurred here. The majority errs in affirming the district
    court’s grant of habeas relief.
    In granting this relief, the majority repeats the same
    “fundamental errors that [the Supreme Court] has repeatedly
    admonished [us] to avoid.” Sexton v. Beaudreaux, 
    138 S. Ct. 1
           In dissenting, I assume without deciding that Andrews’s attorney
    was deficient during the penalty phase of his trial. Therefore, I limit my
    discussion to the other essential element of Andrews’s ineffective
    assistance of counsel claim: prejudice. Further, the majority correctly
    determined that Andrews’s Eighth Amendment claim is not properly
    before us, and that we need not reach Andrews’s uncertified claims.
    ANDREWS V. DAVIS                             61
    2555, 2560 (2018) (per curiam); see also 
    id. (“[T]he Ninth
    Circuit failed to assess Beaudreaux’s ineffectiveness claim
    with the appropriate amount of deference. The Ninth Circuit
    essentially evaluated the merits de novo, only tacking on a
    perfunctory statement at the end of its analysis asserting that
    the state court’s decision was unreasonable.”(emphasis in
    original)). Because “there is at least one theory that could
    have led a fairminded jurist to conclude” that Andrews was
    not prejudiced by his counsel’s deficiencies, 
    id. at 2259,
    the
    California Supreme Court did not unreasonably apply
    Strickland or any other clearly established federal law when
    it denied Andrews’s ineffective assistance claim. 2
    I.
    A jury convicted Andrews of the murder of Preston
    Wheeler, Patrice Brandon, and Ronald Chism. In re
    Andrews, 
    52 P.3d 656
    , 657 (Cal. 2002). After hearing the
    stipulated facts regarding Andrews’s criminal history during
    the penalty phase, the jury also found three special
    circumstances to be true. Two special circumstances related
    to the offense conduct: (1) multiple murder and robbery
    murder, based on the murders of Wheeler, Brandon, and
    Chism, and the robbery of Wheeler, and (2) rape murder,
    based on the rape and murder of Brandon. 
    Id. at 658–59.
    The third special circumstance was Andrews’s conviction
    for the murder of a grocery store clerk in 1967. 
    Id. at 659.
    2
    This dissent incorporates much of Judge Ikuta’s well-reasoned
    panel majority decision, which I wholeheartedly joined. In particular,
    Section I & II largely repeats the relevant portions of the factual and
    procedural background section that Judge Ikuta authored for the panel
    majority. Likewise, Section III repeats many of the same arguments laid
    out by Judge Ikuta in the panel majority’s decision. I am indebted to
    Judge Ikuta’s hard work at the earlier stages of this appeal.
    62                  ANDREWS V. DAVIS
    The penalty-phase presentations were brief. The
    prosecution presented evidence through a joint stipulation.
    
    Id. at 659–60.
    The stipulation provided that Andrews had
    previously been convicted of: (a) murder in 1967; (b) armed
    robbery in 1968; (c) escape in 1969; and (d) robbery in 1977.
    
    Id. at 659.
    The stipulation did not describe the facts of the
    offenses underlying these prior convictions.             The
    prosecution also submitted photographs of Patrice Brandon
    and Ronald Chism as they were found by the police in the
    apartment; the photos “had been excluded from the guilt
    phase on the ground that they were unduly inflammatory.”
    
    Id. The defense
    evidence consisted of two sworn statements
    that were read to the jury. 
    Id. The statements
    described facts
    underlying Andrews’s 1967 conviction for murder.
    According to the statements, Andrews and a 17-year-old
    companion, both of whom were armed, attempted to rob a
    grocery store, and the companion fired three shots, which
    killed the grocery store clerk. 
    Id. In his
    closing argument, defense counsel focused on
    mitigating circumstances. He argued that Andrews’s
    previous crimes were unsophisticated, occurred years apart,
    and all involved the unexpected escalation of a planned
    robbery. 
    Id. He pointed
    out that Andrews was only 16 years
    old at the time of the murder of the grocery store clerk and
    was not the shooter. 
    Id. He portrayed
    Andrews’s conduct in
    the instant case as less blameworthy, because the murders
    occurred while Andrews, Andrews’s co-defendant Charles
    Sanders, Wheeler, and Brandon were under the influence of
    illegal drugs. 
    Id. at 659–60.
    Finally, he emphasized that
    murderers had received life without the possibility of parole
    in other cases despite a jury’s finding of special
    circumstances and despite more blameworthy conduct. 
    Id. ANDREWS V.
    DAVIS                       63
    at 659. He also pointed out that, in this very case, Andrews’s
    co-defendant Sanders received a sentence of only 17 years
    to life. 
    Id. at 660
    . The prosecution offered no rebuttal.
    After one day of deliberation, the jury returned a verdict
    and imposed the death penalty for each of the three murder
    counts. The California Supreme Court affirmed Andrews’s
    conviction and his death sentences. See People v. Andrews,
    
    776 P.2d 285
    (Cal. 1989).
    Andrews filed petitions for state post-conviction relief,
    claiming, among other things, that his counsel’s assistance
    was ineffective at the penalty phase, because counsel did not
    adequately investigate and present mitigating evidence. The
    California Supreme Court denied all of Andrews’s claims,
    except for his penalty phase ineffective assistance of counsel
    claim. In re 
    Andrews, 52 P.3d at 659
    . Then, the California
    Supreme Court appointed a referee to take evidence and
    make factual findings on six questions related to that claim.
    Those questions are:
    1. What      mitigating      character     and
    background evidence could have been,
    but was not, presented by petitioner’s trial
    attorneys at his penalty trial?
    2. What investigative steps by trial counsel,
    if any, would have led to each such item
    of information?
    3. What investigative steps, if any, did trial
    counsel take in an effort to gather
    mitigating evidence to be presented at the
    penalty phase?
    64                   ANDREWS V. DAVIS
    4. What tactical or financial constraints, if
    any, weighed against the investigation or
    presentation of mitigating character and
    background evidence at the penalty
    phase?
    5. What evidence, damaging to petitioner,
    but not presented by the prosecution at
    the guilt or penalty trials, would likely
    have been presented in rebuttal, if
    petitioner had introduced any such
    mitigating character and background
    evidence?
    6. Did petitioner himself request that either
    the investigation or the presentation of
    mitigating evidence at the penalty phase
    be curtailed in any manner? If so, what
    specifically did petitioner request?
    
    Id. The referee
    received the testimony of more than 50
    witnesses over the span of six years. 
    Id. at 660
    . In her report,
    the referee provided one-paragraph summaries and detailed
    factual findings in response to each question. The California
    Supreme Court both summarized the referee’s findings and
    explained the weight it gave to these findings. 
    Id. at 660
    –
    65.
    A.
    In response to the first question, the referee identified
    three broad categories of mitigating character and
    background evidence that was available but not presented to
    the jury: (1) Andrews’s family background; (2) the
    ANDREWS V. DAVIS                      65
    conditions of his confinement in a juvenile reform school
    and in the Alabama prison system; and (3) his mental health.
    
    Id. at 660
    –62.
    1.
    As for Andrews’s family background, the referee’s
    report found that, when Andrews was very young, his
    alcoholic parents separated and his mother left him to be
    raised by his grandparents and aunt in a large family home
    with his siblings and cousins. That family home was located
    in a poor, segregated neighborhood of Mobile, Alabama. 
    Id. at 660
    . The referee described Andrews’s grandfather as
    “loving, benevolent, and responsible.” 
    Id. The court
    added
    that Andrews’s mother regularly sent money and clothing to
    her children, and that Andrews’s upbringing and early
    family life were “relatively stable and without serious
    privation or abuse.” 
    Id. at 670.
    When Andrews was around
    nine or ten, his mother returned home with children from
    another marriage, making Andrews jealous. 
    Id. at 660
    .
    Around that time Andrews’s grandfather, a “pivotal figure”
    in his life, died. 
    Id. Andrews became
    withdrawn, skipped
    school, and committed car theft at age 14. For that crime, he
    was sent to a reform school known as Mt. Meigs, formally
    the Alabama Industrial School for Negro Children. 
    Id. 2. As
    for the second category (the conditions at Mt. Meigs
    and in the Alabama prison system), the California Supreme
    Court recognized that “[a]t Mt. Meigs, [Andrews]
    encountered appalling conditions.” 
    Id. According to
    the
    referee’s report, one witness described it as a farming
    operation and “a penal colony for children,” while others
    described inhumane conditions, and severe beatings with,
    “among other things, broomsticks, mop handles, and fan
    66                  ANDREWS V. DAVIS
    belts.” 
    Id. at 677
    (Kennard, J., dissenting). The California
    Supreme Court also noted that the referee found that
    Andrews “was subjected to beatings, brutality, inadequate
    conditions and sexual predators.” 
    Id. at 660
    –61.
    After his release from Mt. Meigs, Andrews began to
    associate with Freddie Square, an older boy with
    “manipulative and criminal tendencies.” 
    Id. at 661
    . In
    September 1966, three months after Andrews’s release,
    Andrews and Square entered a grocery store, drew guns, and
    announced that they were conducting a robbery. 
    Id. When “the
    store clerk placed his hand down the front of his apron,”
    Square shot the clerk, killing him. 
    Id. Andrews “acted
    as a
    lookout in the robbery, but played a more active role when
    he and Square robbed a taxi driver during their getaway” and
    used the taxi as a getaway car. 
    Id. Andrews was
    convicted
    of murder (based on the grocery store incident) and later of
    armed robbery (of the taxi driver). 
    Id. at 661
    n.4. Andrews
    began serving his sentence in Alabama state prison just
    before he turned 18. 
    Id. at 661
    . He escaped from prison and
    was convicted for that offense in 1969. 
    Id. at 659.
    He
    remained in prison until 1976.
    Summarizing the referee’s findings about the prison
    conditions, the California Supreme Court stated:
    [The referee] described conditions in these
    institutions as abysmal, characterized by
    severe overcrowding, racial segregation,
    substandard facilities, no separation of the
    tougher inmates from younger or smaller
    inmates, constant violence, the persistent
    threat of sexual assaults and the constant
    presence of sexual pressure, the availability
    and necessity of weapons by all inmates, and
    degrading conditions in disciplinary
    ANDREWS V. DAVIS                     67
    modules. [Andrews] not only received
    beatings but was also personally subjected to
    sexual assaults.
    
    Id. at 661
    (internal quotation marks omitted). The referee
    stated that Andrews “was rarely the instigator of violence,”
    
    id. at 662,
    but had been “personally involved in violence
    including the stabbings of two inmates who had been
    threatening him.” 
    Id. at 661
    (internal quotation marks and
    alterations omitted).
    Shortly after his release from prison in 1976, Andrews
    engaged in an attempted robbery of a laundry. 
    Id. The California
    Supreme Court noted the following testimony
    concerning the incident:
    Mobile Police Officer Pettis testified that on
    March 23, 1977, he responded to a robbery
    call. Entering the store from which the call
    came, he and other officers saw [Andrews]
    holding a crying young woman hostage with
    a cocked gun at her head. He told the officers
    to leave and “continued to repeat,
    ‘Someone’s going to get shot, I’m going to
    shoot.’” The officers withdrew. Ultimately,
    [Andrews] surrendered to the officers after
    releasing the young woman and another
    woman whom he had also held hostage.
    
    Id. at 665.
    Andrews was arrested and held in Mobile County
    Jail. 
    Id. at 661
    . After a failed attempt to escape from the
    jail, he succeeded in escaping on his second try and fled to
    California. 
    Id. at 661
    n.5.
    In California, Andrews met Debra Pickett, with whom
    he had a stable relationship. 
    Id. at 661
    . The couple had a
    68                      ANDREWS V. DAVIS
    child, and Andrews held a job during this time. 
    Id. However, by
    late 1979, Andrews had resumed using cocaine
    and left his job and family. 
    Id. Soon after,
    he committed the
    three murders at issue here. 
    Id. 3. Summarizing
    the third category of potentially mitigating
    evidence not presented to the jury, the California Supreme
    Court noted that defense experts had diagnosed Andrews
    with a range of mental disorders, including attention deficit
    disorder, post traumatic stress disorder (PTSD), and mild to
    moderate organic brain impairment, in part due to drug use
    and possibly due to a head injury in prison. 
    Id. The defense
    experts opined that Andrews’s learning disability, the
    adverse circumstances of his childhood, the impact of the
    correctional systems, and the PTSD made his commission of
    the murders and sexual assault more understandable and less
    morally culpable. 
    Id. at 661–62
    . The experts gave several
    specific examples of how Andrews’s impairments and the
    brutal conditions of incarceration made it difficult for him to
    avoid getting into trouble with the law, and one concluded
    that Andrews was “affected by serious emotional
    disturbance when he committed the murders.” 
    Id. at 680
    .
    B.
    In addressing question five 3 (“What evidence, damaging
    to petitioner, but not presented by the prosecution at the guilt
    3
    The California Supreme Court also recounted the referee’s
    findings on questions two, three, and four. These questions addressed
    the investigative steps trial counsel could have and actually did take to
    gather mitigating evidence for the penalty phase, and the constraints that
    weighed against the trial counsel investigating or presenting mitigating
    character and background evidence at the penalty phase. Because I do
    ANDREWS V. DAVIS                           69
    or penalty trials, would likely have been presented in
    rebuttal, if petitioner had introduced any such mitigating
    character and background evidence?”), the referee found that
    the prosecution’s rebuttal presentation could have included
    evidence about two of Andrews’s prior convictions. 
    Id. at 664
    –65.
    First, the prosecution could have presented testimony
    from the taxi driver in the 1968 robbery, who would have
    testified he heard Andrews say “[l]et’s shoot him,” after
    which Andrews fired at least two shots at the driver. 
    Id. at 665.
    Second, the prosecution could have informed the jury
    about Andrews’s attempt to rob a laundry business following
    his release from prison in 1976—a crime that involved
    holding two women hostage, one with a gun to her head. 
    Id. The jury
    had heard that Andrews was convicted of these
    offenses, but it did not hear the facts on which the
    convictions were based; the prosecutor could have
    introduced a complete description of the underlying events
    as aggravating evidence to show Andrews’s greater moral
    culpability for the rape and triple-murder.
    Further, if Andrews’s counsel had presented the expert
    opinions regarding Andrews’s mental disorders, the referee
    determined that the prosecution could have called its own
    mental health experts to rebut Andrews’s evidence. 
    Id. The state
    could have presented expert testimony that Andrews
    did not suffer from PTSD, but rather suffered from antisocial
    personality disorder, that he resented authority, and had a
    normal-range IQ of 93. 
    Id. A second
    state expert would
    have testified that Andrews’s ability to hold a job and
    maintain a stable relationship with Debra Pickett before he
    committed the murders strongly indicated that he had not
    not address the issue of deficient performance here, I largely do not
    address or discuss those findings.
    70                   ANDREWS V. DAVIS
    suffered brain damage. 
    Id. In addition,
    a prosecution expert
    would have testified that Andrews’s “behavior on the night
    of the murders showed planning and thought, and it was
    therefore unlikely that [Andrews] was under the influence of
    PCP when he committed the murders.” 
    Id. C. Regarding
    question six (“Did petitioner himself request
    that either the investigation or the presentation of mitigating
    evidence at the penalty phase be curtailed in any manner[,
    and,] [i]f so, what specifically did petitioner request?”), the
    California Supreme Court noted that the referee had
    concluded that there was no doubt that Andrews
    “adamantly” refused to allow counsel to approach his mother
    and family or to have them testify. 
    Id. This conclusion
    was
    based on the trial records and the consistent testimony of
    witnesses at the reference hearing. 
    Id. In response
    to
    specific questioning from the trial court “regarding his
    reluctance to have his mother called,” and in the face of the
    trial court’s advice that his mother’s testimony would be
    valuable, Andrews “was very precise in his response, telling
    the judge that he fully understood and that this was his
    choice and no one else’s.” 
    Id. (emphasis omitted).
    The
    referee further noted that the lead counsel, Gerald Lenoir,
    “represented on the record at trial that [Andrews] refused to
    have his mother called and that ‘he “had his reasons,” which
    Mr. Lenoir did not wish to disclose to the court.’” 
    Id. The referee
    also found that “[Andrews] went so far as to threaten
    to disrupt the trial if his mother were called.” 
    Id. Andrews’s opposition
    to having counsel involve his family was
    corroborated by his older sister and uncontradicted by his
    mother. 
    Id. ANDREWS V.
    DAVIS                              71
    II.
    As noted above, before ruling on Andrews’s ineffective
    assistance claim, the California Supreme appointed a
    referee, a retired judge, who conducted an extensive
    investigative proceeding over the course of more than six
    years, during which time she took testimony from more than
    50 witnesses. At the conclusion of that proceeding, the
    referee prepared and delivered to the California Supreme
    Court a lengthy report that both summarized the evidence it
    had taken and made factual findings concerning each of the
    issues identified by the California Supreme Court’s
    reference order.
    Andrews raised objections to many of the referee’s
    findings. The court specifically addressed only two of
    them, 4 namely the referee’s finding that: (1) the prosecutor
    would have introduced rebuttal evidence if the defense had
    offered the potentially mitigating evidence identified during
    the course of the reference hearing; and (2) Andrews did not
    want his family to testify during the penalty phase of his trial.
    
    Id. at 665–67.
    The California Supreme Court overruled both
    objections, finding them to be supported by both substantial
    evidence and the credibility determinations drawn by the
    referee based on the voluminous testimony the referee had
    heard during the reference proceeding. 
    Id. at 666–67.
    With
    the objections addressed, the court recited and expressly
    adopted many of the referee’s findings.
    After considering “the record of the hearing, the
    referee’s factual findings, and petitioner’s original trial,” the
    4
    The California Supreme Court declined to rule on the remainder of
    Andrews’s objections (or the objections to the referee’s findings raised
    by the State), finding that the issues addressed by those other objections
    were “not material to [its] resolution of the petition.” 
    Id. at 665.
    72                  ANDREWS V. DAVIS
    California Supreme Court concluded that “[Andrews]
    received constitutionally adequate representation, and any
    inadequacy did not result in prejudice.” 
    Id. at 659.
    Regarding prejudice, the California Supreme Court
    determined that, based on its review of the evidence adduced
    at the reference hearing and the rebuttal evidence that could
    have been introduced during the penalty phase, “it is not
    ‘reasonably probable’ [Andrews] was prejudiced by
    counsel’s rejection of a defense premised on evidence of
    [Andrews]’s upbringing, the Alabama prison conditions he
    experienced, and his mental health in light of the
    circumstances of the crimes, given the ambiguous nature of
    some mitigating evidence and the substantial potential for
    damaging rebuttal.” 
    Id. at 671
    (alterations and citation
    omitted) (quoting 
    Strickland, 466 U.S. at 694
    ).
    In particular, the court concluded that much of the
    evidence identified by Andrews as mitigating “was not
    conclusively and unambiguously mitigating,” and it
    evaluated the possibility that the evidence could be rebutted
    or used to Andrews’s disadvantage, or that cross
    examination might “deflate the mitigating impact” of the
    evidence. 
    Id. at 670
    n.9. For example, the court observed
    that a jury could have determined that Andrews’s family
    background did not reduce his moral culpability, given that
    Andrews was raised in a non-abusive, stable family
    situation. 
    Id. at 670.
    The court therefore concluded that
    “[Andrews] did not suffer a home environment that would
    place his crimes in any understandable context or explain his
    resorting to crime every time he was released or escaped
    from prison.” 
    Id. In addition,
    the California Supreme Court determined
    that the evidence regarding the prison conditions was
    essentially a double-edged sword. On the one hand, the
    ANDREWS V. DAVIS                     73
    prison conditions evidence left “no doubt [that Andrews]
    endured      horrifically    demeaning    and     degrading
    circumstances.” 
    Id. at 670
    –71. On the other hand, the
    evidence would be presented primarily through the
    testimony of Andrews’s former fellow inmates, who had
    serious criminal records that could “draw[] an unfavorable
    comparison” with Andrews. 
    Id. at 671.
    “Many had
    themselves engaged in brutality while in prison and escaped
    with some frequency,” similar to Andrews. 
    Id. Moreover, no
    matter how the prison conditions evidence was presented,
    “[r]ather than engendering sympathy, the evidence could
    well have reinforced an impression of him as a person who
    had become desensitized and inured to violence and
    disrespect for the law.” 
    Id. The California
    Supreme Court concluded that, based on
    the foregoing, any inadequacies in counsel’s performance
    “did not result in prejudice.” 
    Id. at 659.
    Accordingly, the
    California Supreme Court denied Andrews’s state habeas
    petition. 
    Id. at 676.
    A federal habeas petition followed,
    which was granted by the district court. It found that the
    California Supreme Court had unreasonably applied existing
    United States Supreme Court precedent concerning
    ineffective assistance of counsel claims. This appeal
    followed.
    III.
    Under AEDPA, an application for a writ of habeas
    corpus may not be granted:
    with respect to any claim that was
    adjudicated on the merits in State court
    proceedings unless the adjudication of the
    claim—(1) resulted in a decision that was
    contrary to, or involved an unreasonable
    74                   ANDREWS V. DAVIS
    application of, clearly established Federal
    law, as determined by the Supreme Court of
    the United States; or (2) resulted in a decision
    that was based on an unreasonable
    determination of the facts in light of the
    evidence presented in the State court
    proceeding.
    28 U.S.C. § 2254(d).
    This case involves the application of § 2254(d)(1) and
    asks whether the state court’s decision was an unreasonable
    application of Strickland. This is a highly deferential
    standard. See 
    Richter, 562 U.S. at 105
    (“The standards
    created by Strickland and § 2254(d) are both ‘highly
    deferential,’ and when the two apply in tandem, review is
    ‘doubly’ so.”(citations omitted)); see also Cullen v.
    Pinholster, 
    563 U.S. 170
    , 181 (2011) (noting that AEDPA
    sets forth a “highly deferential standard . . . , which demands
    that state-court decisions be given the benefit of the
    doubt”(quoting Woodford v. Visciotti, 
    537 U.S. 19
    , 24
    (2002) (per curiam))). “As amended by AEDPA, § 2254(d)
    stops short of imposing a complete bar on federal-court
    relitigation of claims already rejected in state proceedings,”
    and instead only “preserves authority to issue the writ in
    cases where there is no possibility fairminded jurists could
    disagree that the state court’s decision conflicts with [the
    Supreme] Court’s precedents.” 
    Richter, 562 U.S. at 102
    .
    “The pivotal question is whether the state court’s
    application of the [relevant Supreme Court precedent] was
    unreasonable.” 
    Id. at 101.
    The Supreme Court has told us
    “time and again that ‘an unreasonable application of federal
    law is different from an incorrect application of federal
    law.’” 
    Pinholster, 563 U.S. at 202
    (quoting Richter, 562
    ANDREWS V. 
    DAVIS 75 U.S. at 101
    ); see also 
    Richter, 562 U.S. at 102
    (“[E]ven a
    strong case for relief does not mean the state court’s contrary
    conclusion was unreasonable.”).                Moreover, an
    “unreasonable application” of Supreme Court precedent is
    not one that is merely “incorrect or erroneous.” Lockyer v.
    Andrade, 
    538 U.S. 63
    , 75 (2003); see also Williams v.
    Taylor, 
    529 U.S. 362
    , 410 (2000). “Under § 2254(d), a
    habeas court must determine what arguments or theories
    supported” the state court’s decision, 
    Richter, 562 U.S. at 102
    , and if “‘fairminded jurists could disagree’ on the
    correctness of the state court’s decision,” that decision is not
    unreasonable. 
    Id. at 101
    (quoting Yarborough v. Alvarado,
    
    541 U.S. 652
    , 664 (2004)); see also 
    Beaudreaux, 138 S. Ct. at 2559
    –60.
    Therefore, it does not matter whether we would have
    reached a different result here than the California Supreme
    Court. Rather, “a state prisoner must show that the state
    court’s ruling on the claim being presented in federal court
    was so lacking in justification that there was an error well
    understood and comprehended in existing law beyond any
    possibility for fairminded disagreement.” 
    Richter, 562 U.S. at 103
    . “If this standard is difficult to meet, that is because
    it was meant to be.” 
    Id. at 102.
    The clearly established federal law for ineffective
    assistance of counsel claims, as determined by the Supreme
    Court, is Strickland and its progeny. See 
    Pinholster, 563 U.S. at 189
    ; see also 
    Richter, 562 U.S. at 102
    . Strickland
    concluded that, under the Sixth Amendment, the accused has
    the right to the effective assistance of counsel at trial and
    during capital sentencing 
    proceedings. 466 U.S. at 684
    –87.
    A petitioner claiming ineffective assistance of counsel must
    prove that: (1) “counsel’s performance was deficient,” and
    (2) “the deficient performance prejudiced the defense.” 
    Id. 76 ANDREWS
    V. DAVIS
    at 687. However, when a Strickland claim is considered
    through AEDPA’s deferential lens, “[t]he likelihood of a
    different result must be substantial, not just conceivable,” to
    establish prejudice. 
    Richter, 562 U.S. at 112
    (citing
    
    Strickland, 466 U.S. at 693
    ).
    As previously indicated, I limit this analysis to the
    second essential element of Andrews’s ineffective assistance
    claim: prejudice. Determining whether counsel’s deficient
    performance prejudiced the defense at the penalty phase of a
    capital case generally proceeds through three steps. First,
    the court must evaluate and weigh the totality of the
    available mitigation evidence. See 
    Williams, 529 U.S. at 397
    –98; 
    Pinholster, 563 U.S. at 197
    –202. Second, the court
    must evaluate and weigh the aggravating evidence and any
    rebuttal evidence that could have been adduced by the
    government had the mitigating evidence been introduced.
    See 
    Williams, 529 U.S. at 397
    –98; 
    Pinholster, 563 U.S. at 197
    –202. Third, the court must re-weigh the evidence in
    aggravation against the totality of available mitigating
    evidence to determine “whether there is a reasonable
    probability that, absent the errors, the sentencer . . . would
    have concluded that the balance of aggravating and
    mitigating circumstances did not warrant death.” 
    Strickland, 466 U.S. at 695
    ; see also Sears v. Upton, 
    561 U.S. 945
    , 955–
    56 (2010) (per curiam); Wiggins v. Smith, 
    539 U.S. 510
    , 534
    (2003). The California Supreme Court carefully applied this
    framework and drew conclusions that are supported by the
    evidence. 5 Let me explain.
    5
    The majority states that the California Supreme Court “dispensed
    with its [prejudice] analysis in two sentences.” Maj. Op. at 39. The
    majority also charges that court with “improper[ly] conflat[ing]” the
    deficiency and prejudice analyses. 
    Id. However, these
    statements
    ANDREWS V. DAVIS                               77
    A.
    The California Supreme Court considered the totality of
    the mitigating evidence presented at trial, as well as what
    mitigating evidence could have been presented by a
    competent attorney, based on the factual findings made by
    the referee at the conclusion of the referee’s six-year
    investigation. See 
    Williams, 529 U.S. at 397
    –98. The court
    reviewed all of the mitigating evidence that Andrews
    presented, including: Andrews’s family background,
    incarceration in Mt. Meigs and in Alabama prisons, and
    mental health evidence. See In re 
    Andrews, 52 P.3d at 670
    –
    71.
    The California Supreme Court then evaluated the
    strength of this mitigating evidence by considering, among
    other things, whether it might be viewed by a jury as
    aggravating. See Burger v. Kemp, 
    483 U.S. 776
    , 793 (1987);
    
    Pinholster, 563 U.S. at 201
    –02. As noted previously, the
    court concluded that much of the evidence identified as
    mitigating was not unambiguously mitigating, and the court
    simply misrepresent the California Supreme Court’s analysis. For
    example, the California Supreme Court spent page upon page discussing
    the double-edged nature of the mitigating evidence defense counsel
    could have introduced. See In re 
    Andrews, 52 P.3d at 668
    –72. That the
    California Supreme Court relied on this evidence in analyzing whether
    defense counsel was deficient does not preclude the court from then
    relying on that same evidence in its prejudice analysis; nor does it mean
    that the court somehow conflated the two analyses merely because the
    same evidence goes to each prong. Instead, Sears v. Upton—the case
    the majority relies upon in making its assertion in this regard—simply
    stands for the proposition that courts should not foreclose that a
    potentially mitigating factor might satisfy one prong of the analysis just
    because it fails to satisfy the other. 
    See 561 U.S. at 954
    n.10. Sears thus
    in no way bars courts from relying on the same facts in conducting its
    analysis of each prong of the ineffective assistance test, as the California
    Supreme Court did in this case.
    78                   ANDREWS V. DAVIS
    also noted the possibility that the evidence could have been
    rebutted or used to Andrews’s disadvantage. See In re
    
    Andrews, 52 P.3d at 670
    n.9.
    The California Supreme Court observed that a jury could
    have determined that Andrews’s family background did not
    reduce his moral culpability, given that Andrews was raised
    in a non-abusive, stable family situation. 
    Id. at 670.
    Based
    on that observation, the court concluded that “[Andrews] did
    not suffer a home environment that would place his crimes
    in any understandable context or explain his resorting to
    crime every time he was released or escaped from prison.”
    
    Id. This conclusion
    was not unreasonable. Evidence of a
    difficult upbringing can be useful in mitigation, but the
    opposite is also true. See Bell v. Cone, 
    535 U.S. 685
    , 701–
    02 (2002) (observing that evidence of a normal youth might
    “cut the other way”). At the very least, this determination
    was not so lacking in justification that it was an error beyond
    any fairminded disagreement. See 
    Richter, 562 U.S. at 103
    .
    In addition, the California Supreme Court determined
    that the evidence regarding the prison conditions was
    double-edged. On the one hand, the prison conditions
    evidence left “no doubt [that Andrews] endured horrifically
    demeaning and degrading circumstances.” In re 
    Andrews, 52 P.3d at 670
    . On the other hand, the evidence would be
    presented primarily through the testimony of Andrews’s
    former fellow inmates, who had serious criminal records that
    could “draw[] an unfavorable comparison” with Andrews.
    
    Id. at 671.
    “Many had themselves engaged in brutality while
    in prison and escaped with some frequency,” similar to
    Andrews. 
    Id. Though the
    majority notes that this
    information could have been discovered through “standard
    legal research” and a review of then existing lawsuits, Maj.
    Op. at 25, it does not explain how this information, once
    ANDREWS V. DAVIS                       79
    discovered, could have been introduced without offering
    similar unfavorable comparisons for the jury to draw. Even
    if this evidence could be introduced through some means
    other than inmate testimony, no matter how this evidence
    was presented, “[r]ather than engendering sympathy, the
    evidence could well have reinforced an impression of
    [Andrews] as a person who had become desensitized and
    inured to violence and disrespect for the law.” In re
    
    Andrews, 52 P.3d at 671
    ; cf. 
    Pinholster, 563 U.S. at 201
    –02.
    The majority also claims that the California Supreme
    Court was unreasonable in concluding that the Mt. Meigs
    evidence could have cut both ways, because “[t]he jury
    already knew, from Andrews’s heinous crimes of conviction
    and from the stipulated prior convictions, that Andrews was
    antisocial and ‘had become desensitized and inured to
    violence and disrespect for the law.’” Maj. Op. at 47
    (quoting In re 
    Andrews, 52 P.3d at 671
    ). However, the
    majority mischaracterizes the evidence before the jury in this
    proceeding. The stipulation presented to the jury did not
    describe the facts of each of the offenses underlying
    Andrews’s prior convictions. As a result, the jury did not
    hear that Andrews held a woman hostage with a gun to her
    head when robbing a laundry business. In re 
    Andrews, 52 P.3d at 665
    . Nor did it hear that the taxi driver in the 1968
    robbery heard Andrews say “[l]et’s shoot him,” after which
    Andrews fired at least two shots at the driver. 
    Id. These details,
    had they been introduced during the
    sentencing proceeding to rebut testimony concerning the
    conditions of Andrews’s confinement, could have further
    underscored that Andrews was a repeat violent offender who
    had long ago lost any respect for the law. The California
    Supreme Court’s determination that evidence relating to Mt.
    Meigs and the other facilities in which Andrews was
    80                   ANDREWS V. DAVIS
    incarcerated was not conclusively and unambiguously
    mitigating and could cut both ways was thus not an
    unreasonable determination, nor is it beyond the scope of
    fairminded disagreement.
    B.
    The California Supreme Court also evaluated the weight
    of the aggravating evidence at trial, as well as any additional
    rebuttal evidence that could have been introduced. See
    
    Williams, 529 U.S. at 397
    –98; Wong v. Belmontes, 
    558 U.S. 15
    , 20, 24–28 (2009) (per curiam). Based on that
    assessment, the California Supreme Court determined that
    the aggravating evidence introduced against Andrews was
    overwhelming, even without considering the rebuttal
    evidence that the prosecutor could have (but did not)
    introduce during the sentencing proceeding.
    Turning to the circumstances of Andrews’s crimes, the
    California Supreme Court stated that the murders showed a
    “callous disregard for human life.” In re 
    Andrews, 52 P.3d at 671
    . Andrews did not impulsively react to a situation that
    got out of hand; rather, he interacted with the victims in a
    calm and normal manner before torturing and killing them.
    
    Id. He also
    did more than simply kill the victims. He raped
    and sodomized Brandon before killing her, and he killed
    Wheeler and Chism with “considerable violence and evident
    sangfroid.” 
    Id. The California
    Supreme Court also noted that, as rebuttal
    evidence, the prosecution could have presented the details of
    Andrews’s criminal history, cf. 
    Cone, 535 U.S. at 700
    n.5;
    
    Burger, 483 U.S. at 793
    , from which the jury might conclude
    Andrews was “aggressive and desensitized to violence,” In
    re 
    Andrews, 52 P.3d at 669
    . The court also determined that
    a jury may have concluded that this “pattern of criminality”
    ANDREWS V. DAVIS                             81
    showed Andrews “would pose a danger to others if he were
    sentenced to life imprisonment.” 6 
    Id. In light
    of these facts,
    the California Supreme Court reasonably determined that the
    government had produced significant evidence of numerous
    extremely serious aggravating circumstances.
    The California Supreme Court further noted that, had
    Andrews offered expert testimony suggesting that his prison
    experience caused him to react with rage to perceived
    insults, the prosecutor could have quite conceivably used
    that same mental health evidence to Andrews’s disadvantage
    on cross examination. 
    Id. at 670.
    That is, such testimony
    could have also plausibly convinced the jury that Andrews
    “was unable to control lethal impulses on the slightest
    provocation.” Id.; cf. 
    Pinholster, 563 U.S. at 201
    –02.
    Moreover, the presentation of the mental health evidence
    would also have given the prosecutor additional
    opportunities to repeat the circumstances of these crimes as
    well as Andrews’s past criminality. In re Andrews, 
    52 P.3d 6
           Andrews argues that the California Supreme Court’s conclusion
    that the evidence gave rise to the inference of future dangerousness was
    an unreasonable determination of the facts. He argues that the prison
    stabbings, laundry robbery, and conditioning to violence during his
    prison experiences do not support such an inference, pointing to
    mitigating facts found by the referee, including that (in some incidents)
    Andrews was defending himself against inmates who had been
    threatening him. I disagree. The California Supreme Court considered
    these mitigating facts, such as evidence that in prison Andrews was “the
    prey rather than the predator” and acted in self defense, see 
    id. at 679,
    and reasonably concluded that evidence showing that Andrews was
    conditioned to violence during his prison experiences was an
    aggravating, not mitigating, circumstance. See 
    Burger, 483 U.S. at 793
    (noting that evidence of a petitioner’s troubled family background could
    also “suggest violent tendencies” that could affect the jury adversely).
    Because the state court reasonably concluded that the jury could have
    found future dangerousness even had the mitigating evidence been
    introduced, the state court did not unreasonably apply Supreme Court
    precedent in weighing how this evidence might impact a jury.
    82                  ANDREWS V. DAVIS
    at 670. Finally, the court also pointed out, based on the
    referee’s findings, that prosecution experts could have
    testified that Andrews had normal intelligence and did not
    suffer brain damage, but had antisocial personality traits.
    Id.; cf. 
    Pinholster, 563 U.S. at 201
    .
    These findings are supported by the California Supreme
    Court record. The California Supreme Court did not
    unreasonably determine that the state was poised to
    introduce rebuttal testimony that, if anything, could have
    provided further evidence of aggravating circumstances or
    considerations.
    C.
    After evaluating the mitigating and aggravating
    evidence, the California Supreme Court re-weighed and
    assessed whether it was reasonably probable that, in the
    absence of any deficient performance by counsel, the
    sentencer “would have concluded that the balance of
    aggravating and mitigating circumstances did not warrant
    death.” 
    Strickland, 466 U.S. at 695
    ; see also In re 
    Andrews, 52 P.3d at 671
    –76. The state court applied the relevant
    Supreme Court precedent and concluded it was not
    reasonably probable that Andrews was “prejudiced by
    counsel’s rejection of a defense premised on evidence of
    [Andrews]’s upbringing, the Alabama prison conditions he
    experienced, and his mental health in light of the
    circumstances of the crimes, given the ambiguous nature of
    some mitigating evidence and the substantial potential for
    damaging rebuttal.” 
    Id. at 671.
    Accordingly, the California
    Supreme Court concluded that, even if counsel were
    deficient, Andrews’s defense was not prejudiced by any such
    deficiency. 
    Id. ANDREWS V.
    DAVIS                       83
    The majority finds that this was an unreasonable
    application of Strickland; the majority errs. Much as was the
    case in Richter, the majority has “treated the
    unreasonableness question as a test of its confidence in the
    result it would reach under de novo review: Because the
    Court of Appeals had little doubt that [Andrews’s]
    Strickland claim had merit, the Court of Appeals concluded
    the state court must have been unreasonable in rejecting 
    it.” 562 U.S. at 102
    (emphasis in original). This is not the
    appropriate test under AEDPA, a fact of which the Supreme
    Court has reminded the Ninth Circuit on numerous
    occasions. See, e.g., 
    Beaudreaux, 138 S. Ct. at 2559
    –60;
    
    Ayala, 135 S. Ct. at 2202
    (“[T]he members of the panel
    majority misunderstood the role of a federal court in a habeas
    case.”); Nevada v. Jackson, 
    569 U.S. 505
    , 512 (2013) (per
    curiam) (“In thus collapsing the distinction between ‘an
    unreasonable application of federal law’ and what a lower
    court believes to be ‘an incorrect or erroneous application
    of federal law,’ the Ninth Circuit’s approach would defeat
    the substantial deference that AEDPA requires.” (citation
    omitted)); Cavazos v. Smith, 
    565 U.S. 1
    , 8 (2011) (per
    curiam) (same); 
    Pinholster, 563 U.S. at 202
    –03 (“Even if the
    Court of Appeals might have reached a different conclusion
    as an initial matter, it was not an unreasonable application of
    our precedent for the California Supreme Court to conclude
    that Pinholster did not establish prejudice.”); Felkner v.
    Jackson, 
    562 U.S. 594
    , 598 (2011) (per curiam) (same);
    Premo v. Moore, 
    562 U.S. 115
    , 123 (2011) (same). Rather,
    the majority should have applied this standard: Where, after
    determining “what arguments or theories supported” the
    state court’s decision, 
    Richter, 562 U.S. at 102
    , “‘fairminded
    jurists could disagree’ on the correctness of the state court’s
    decision,” that decision is not objectively unreasonable, 
    id. at 101
    (quoting 
    Yarborough, 541 U.S. at 664
    ).
    84                   ANDREWS V. DAVIS
    And in this case, reasonable jurists could disagree on the
    correctness of the conclusion drawn by the California
    Supreme Court. The evidence that Andrews argues should
    have been introduced at sentencing could have conceivably
    persuaded the jury to impose a sentence other than death.
    However, a mere possibility of a different outcome is not
    enough. See 
    Richter, 562 U.S. at 111
    –12. Rather than apply
    the appropriate level of deference required under AEDPA,
    the majority steps into the shoes of the dissenting justice of
    the California Supreme Court in this case and essentially
    applies Strickland de novo. Indeed, the majority even makes
    its own factual findings when it determines that the
    prosecution would not have introduced rebuttal witnesses
    had the defense presented evidence of Andrews’s prison
    conditions. Yet this finding discounts the substantial
    rebuttal evidence that the California Supreme Court and the
    referee found could have been introduced. See In re
    
    Andrews, 52 P.3d at 665
    –66. Under AEDPA, such review
    is erroneous. In taking this approach, the majority has
    ignored “the only question that matters under § 2254(d)(1),”
    
    Lockyer, 538 U.S. at 71
    , namely, whether the state court’s
    application of the clearly established Supreme Court
    precedent was objectively unreasonable.
    To make matters worse, the ink is barely dry on a
    Supreme Court decision reminding our circuit that habeas
    relief is not appropriate under AEDPA when a single theory
    exists that supports the result adopted by the state court. See
    
    Beaudreaux, 138 S. Ct. at 2559
    –60. Such a theory exists
    here, and it was articulated by the California Supreme Court:
    If introduced, the potentially mitigating evidence at issue
    could quite possibly have had the opposite of the intended
    effect, both because it paled in comparison to the nearly
    overwhelming aggravating evidence adduced by the state
    both during trial and at sentencing, and because its
    ANDREWS V. DAVIS                             85
    introduction would have offered the prosecutor an
    opportunity to re-visit the gruesome nature of Andrews’s
    crimes on cross-examination, and to introduce in rebuttal
    some or all of the additional aggravating evidence it had in
    its possession. As a result, the California Supreme Court
    determined that it was not reasonably probable that a
    different outcome would have occurred, but for counsel’s
    errors.
    The majority purports to recognize AEDPA’s highly
    deferential standard, but fails to apply it. Just because we
    may have concluded otherwise had we been sitting on the
    California Supreme Court, we do not have license to second
    guess that court’s well-reasoned decision. Instead, because
    fairminded jurists can disagree regarding the correctness of
    the state court’s application of Strickland to Andrews’s
    penalty phase ineffective assistance claim, we are bound by
    AEDPA and binding Supreme Court precedent to conclude
    that Andrews is not entitled to habeas relief on that issue.
    D.
    Andrews also argues that the California Supreme Court’s
    decision unreasonably applies not only Strickland, but two
    other Supreme Court decisions as well: Williams and Porter
    v. McCollum, 
    558 U.S. 30
    (2009) (per curiam). 7
    Unfortunately, the majority accepts this argument.
    7
    The majority also argues that the California Supreme Court
    erroneously relied on the Supreme Court’s decision in Burger, though it
    does so in the context of its discussion of counsel’s deficient
    performance, not its discussion of prejudice. See Maj. Op. at 32–34.
    Burger supports the California Supreme Court’s finding of no prejudice.
    In Burger, the Supreme Court found that counsel was not deficient for
    failing to present double-edged mitigating evidence that would have
    86                      ANDREWS V. DAVIS
    The California Supreme Court discussed Williams at
    length and distinguished it as having “substantially
    dissimilar facts.” In re 
    Andrews, 52 P.3d at 674
    –75. The
    California Supreme Court correctly determined that
    Andrews’s case and Williams are distinguishable.
    The majority suggests that Andrews’s childhood was
    comparable to the “nightmarish childhood” described in
    
    Williams, 529 U.S. at 395
    , largely due to Andrews’s
    experiences at Mt. Meigs, Maj. Op. at 31, 43. The record
    before us does not support such a conclusion. Had counsel
    adequately investigated Williams’s background, he would
    have discovered documents that “dramatically described
    mistreatment, abuse, and neglect during [Williams’s] early
    childhood,” 
    id. at 370
    (emphasis added), before Williams
    was removed (at least temporarily) from his abusive home at
    age 11, 
    Id. at 370,
    395. Andrews’s early childhood, in
    contrast, was spent in a relatively stable and non-abusive
    household, see In re 
    Andrews, 52 P.3d at 670
    , a fact that the
    majority has not even attempted to challenge or dispute.
    Despite that stable upbringing, Andrews dropped out of
    school and stole a car at the age of 14, after which he was
    removed from home and placed in Mt. Meigs. Andrews
    experienced appalling conditions and treatment at Mt.
    Meigs, but his experiences at Mt. Meigs while a teen are
    simply not the same as the abuse that Williams suffered at
    so young an age at the hands of his parents. Thus, the
    introduced damaging facts to the jury and suggested “violent
    
    tendencies.” 483 U.S. at 793
    –95. The California Supreme Court reached
    the same conclusion as Burger, i.e., that Andrews’s mitigating evidence
    would negatively affect a jury because it would have allowed “the
    introduction of substantial aggravating evidence . . . that could have
    undermined the defense by depicting [Andrews] as aggressive and
    desensitized to violence.” In re 
    Andrews, 52 P.3d at 669
    (citing 
    Burger, 483 U.S. at 794
    –95). This conclusion was neither erroneous, nor was it
    an unreasonable application of Burger.
    ANDREWS V. DAVIS                           87
    California Supreme Court reasonably determined that the
    abuse described here is not comparable to the abuse and
    “nightmarish childhood” described in Williams.
    Moreover, even assuming that the California Supreme
    Court was essentially bound to conclude that the
    mistreatment described here is the same as the mistreatment
    described in Williams, there are a number of other reasons
    why Williams and this case are distinguishable. First, in
    Williams, defense counsel could have introduced strong
    character evidence regarding his exemplary conduct in
    
    prison, 529 U.S. at 398
    , but no comparable evidence of good
    character was present in Andrews’s case. The defendant in
    Williams was “borderline mentally retarded,” 
    Id. at 396,
    398, while the prosecution could have presented evidence
    that Andrews had an average IQ and antisocial personality
    traits. In re 
    Andrews, 52 P.3d at 670
    . Although the
    prosecutor in Williams could have introduced rebuttal
    evidence that the defendant “had been thrice committed to
    the juvenile system—for aiding and abetting larceny when
    he was 11 years old, for pulling a false fire alarm when he
    was 12, and for breaking and entering when he was 
    15,” 529 U.S. at 396
    —such evidence has much less weight compared
    to Andrews’s robbery-murder, hostage taking, and history of
    escapes from prison, In re 
    Andrews, 52 P.3d at 675
    . Finally,
    the circumstances of the crime in Williams, where the
    defendant admitted that he had killed a man by striking him
    in the chest and back after an argument, were far less brutal
    than Andrews’s rape and triple murder. 
    Id. 8 8
           The majority suggests that the California Supreme Court
    unreasonably compared the aggravating facts of Andrews’s case to
    mitigating facts in Williams. Maj. Op. at 42. However, AEDPA requires
    that, whenever possible, we must “read [the state court] decision to
    88                       ANDREWS V. DAVIS
    The majority fails to engage with these distinctions and
    the evidence at issue. Instead, the majority reviews this issue
    de novo and concludes that the aggravating evidence
    admitted at trial and the evidence that could have been
    offered in rebuttal against Andrews was no greater than the
    aggravating evidence in Williams. Maj. Op. at 42–44. Once
    again, the majority misapprehends our role under AEDPA.
    We must determine whether the California Supreme Court’s
    application of Williams was objectively unreasonable under
    28 U.S.C. § 2254(d)(1), not whether we would have reached
    a different result if we were in the California Supreme
    Court’s position. “In order for a state court’s decision to be
    an unreasonable application of [the Supreme] Court’s case
    law, the ruling must be ‘objectively unreasonable, not
    merely wrong; even clear error will not suffice.’” Virginia
    v. LeBlanc, 
    137 S. Ct. 1726
    , 1728 (2017) (per curiam)
    (quoting Woods v. Donald, 
    135 S. Ct. 1372
    , 1376 (2015) (per
    curiam)). 9 Because the facts of Williams are dissimilar, the
    comport with clearly established federal law.” Mann v. Ryan, 
    828 F.3d 1143
    , 1158 (9th Cir. 2016) (en banc). That can easily be done here. The
    California Supreme Court drew this particular comparison to illustrate
    why the facts at issue in Williams and the facts at issue here are distinct,
    and thereby illustrate why these cases are distinguishable. As the
    discussion above demonstrates, this determination is amply supported by
    a careful reading of Williams and the facts of the case before us. The
    majority errs when deciding that the California Supreme Court
    unreasonably applied Williams on this basis.
    9
    The majority also relies on Justice Rehnquist’s opinion in
    Williams, which described additional aggravating factors beyond the
    crime itself. See Maj Op. at 42 (citing 
    Williams, 529 U.S. at 418
    (Rehnquist, C.J., concurring in part and dissenting in part)). But under
    AEDPA, neither concurring nor dissenting opinions, nor circuit court
    decisions, constitute clearly established Supreme Court precedent. See
    
    Williams, 529 U.S. at 412
    (majority opinion) (stating that only the
    Supreme Court’s “holdings, as opposed to the dicta” constitute clearly
    ANDREWS V. DAVIS                             89
    Supreme Court’s determination in Williams that counsel’s
    ineffective assistance was prejudicial does not make the state
    court’s contrary conclusion here unreasonable. See 
    Richter, 562 U.S. at 101
    –02; see also 
    Pinholster, 563 U.S. at 202
    –03.
    Andrews also argues that the California Supreme Court’s
    decision was unreasonable in light of Porter. The majority
    appears to agree, finding that (as in Porter) habeas relief is
    appropriate here even though in both cases the prosecutor
    presented “a strong case in aggravation.” Maj. Op. at 44.
    These cases are not remotely comparable. For one thing, the
    aggravating evidence in this case is considerably stronger
    than the aggravating evidence that was at issue in Porter. A
    jury convicted Porter of two murders and, following a
    penalty phase trial, recommended a sentence of death for
    each murder. 
    Porter, 558 U.S. at 31
    –32. The Florida
    Supreme Court affirmed, but also noted that the evidence
    was “consistent with the hypothesis that Porter’s was a crime
    of passion, not a crime that was meant to be deliberately and
    extraordinarily painful,” 
    id. at 33,
    and also that Porter had
    been “drinking heavily just hours before the murders,” 
    id. at 38.
    Here, by contrast, there is no evidence showing that
    Andrews’s crimes were committed in the heat of passion. To
    the contrary, the California Supreme Court found that
    Andrews did not impulsively react to a situation that got out
    of hand; instead, he interacted with the victims in a calm and
    normal manner before torturing them, raping Brandon, and
    ultimately killing each of them in cold blood. See In re
    
    Andrews, 52 P.3d at 671
    .
    established Federal law); cf. Glebe v. Frost, 
    574 U.S. 21
    , 24 (2014) (per
    curiam) (“As we have repeatedly emphasized, however, circuit
    precedent does not constitute ‘clearly established Federal law, as
    determined by the Supreme Court.’” (quoting 28 U.S.C. § 2254(d)(1))).
    90                      ANDREWS V. DAVIS
    Porter also strongly criticized the Florida Supreme
    Court’s consideration of the potentially mitigating evidence
    that was produced during the post-conviction relief
    proceeding conducted 
    there. 558 U.S. at 43
    (observing that
    the Florida Supreme Court had “discount[ed] to irrelevance
    the evidence of Porter’s abusive childhood”). The California
    Supreme Court did not repeat that same mistake here.
    Further, the mitigation evidence produced here is not similar
    to the evidence considered in Porter. The most important
    mitigation evidence in Porter, that the defendant served in
    “two of the most critical—and horrific—battles of the
    Korean War,” see 
    id. at 41,
    is far stronger than the mitigation
    evidence at issue here. And Andrews did not have an
    abusive home life, while Porter had a childhood history of
    physical abuse, during which he was subjected to routine
    beatings and regularly watched his father beating his mother.
    
    Id. at 33.
    Moreover, there is no evidence that the murders
    Andrews committed were crimes of passion for which
    childhood abuse would have “particular salience for a jury”
    in evaluating his behavior. See 
    id. at 43.
    Because Porter is
    factually distinct from this case, the majority errs in
    determining that the state court unreasonably applied it in
    connection with its determination that Andrews could not
    establish prejudice under Strickland. 10
    10
    It is worth noting that the majority has overlooked a Supreme
    Court decision that is a closer fit to the facts considered here by the
    California Supreme Court: Woodford v. Visciotti, 
    537 U.S. 19
    (2002)
    (per curiam). In Visciotti, the Supreme Court explained that “under
    § 2254(d)(1), it is not enough to convince a federal habeas court that, in
    its independent judgment, the state-court decision applied Strickland
    incorrectly.” 
    Id. at 27
    (internal quotation marks omitted). Rather, “[t]he
    federal habeas scheme leaves primary responsibility with the state courts
    for these judgments, and authorizes federal-court intervention only when
    a state-court decision is objectively unreasonable.” 
    Id. In sum,
    the Court
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    The majority purports to recognize that “our deference
    to state court decisions is at its zenith on federal habeas
    review,” Maj. Op. at 5, but fails to apply this standard. Here,
    the California Supreme Court determined that it was not
    reasonably probable that the outcome would have been
    different in this case had the evidence adduced at the
    reference hearing (along with the rebuttal evidence) been
    presented to the jury. In re 
    Andrews, 52 P.3d at 675
    –76.
    Because the state court’s rejection of Andrews’s penalty
    phase ineffective assistance of counsel claim was not
    contrary to or an unreasonable application of Supreme Court
    precedent, AEDPA bars relief on that claim.
    IV.
    The majority frames its conclusions in the terms required
    by AEDPA and declares that its prejudice findings are
    beyond any fairminded disagreement. It simply never
    explains why no reasonable jurist could come out the other
    way. The majority yet again makes the same error that the
    Supreme Court has repeatedly corrected in Ninth Circuit
    jurisprudence. It essentially reviews the California Supreme
    Court’s decision de novo and grants relief that is barred
    under AEDPA. Applying the proper measure of deference,
    held that “[w]hether or not we would reach the same conclusion as the
    California Supreme Court, we think at the very least that the state court’s
    contrary assessment was not ‘unreasonable.’” 
    Id. (quoting Cone,
    535
    U.S. at 701). Here, as in Visciotti, the state court re-weighed Andrews’s
    mitigating evidence against the brutal circumstances of the crime and
    Andrews’s prior criminal history, and determined there was no
    reasonable probability that the sentencer would determine that “the
    balance of aggravating and mitigating factors did not warrant imposition
    of the death penalty.” 
    Id. at 22
    (internal quotation marks omitted). This
    decision was not objectively unreasonable. We must then conclude that
    “[w]hether or not we would reach the same conclusion,” we simply
    cannot say the California Supreme Court’s conclusion was an
    unreasonable application of Strickland. See 
    id. at 27.
    92                 ANDREWS V. DAVIS
    we can only conclude that the California Supreme Court did
    not unreasonably apply Strickland when it rejected
    Andrews’s penalty phase ineffective assistance of counsel
    claims. We should reverse the district court’s grant of
    habeas relief on Andrews’s penalty phase Strickland claim.