Washington v. David Shinn ( 2021 )


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  •                FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    THEODORE WASHINGTON,                  No. 05-99009
    Petitioner-Appellant,
    D.C. No.
    v.                    CV-95-02460-JAT
    DAVID SHINN, Director,
    Respondent-Appellee.           OPINION
    Appeal from the United States District Court
    for the District of Arizona
    James A. Teilborg, District Judge, Presiding
    Argued and Submitted September 8, 2021
    San Francisco, California
    Filed December 20, 2021
    Before: Ronald M. Gould, Consuelo M. Callahan, and
    Lawrence VanDyke, Circuit Judges.
    Opinion by Judge Callahan
    2                    WASHINGTON V. SHINN
    SUMMARY *
    Habeas Corpus/Death Penalty
    The panel affirmed the district court’s denial of
    Theodore Washington’s habeas corpus petition challenging
    his Arizona conviction and death sentence for first-degree
    murder.
    Washington asserted that he is entitled to relief on
    several grounds, the majority of which the panel addressed
    in a memorandum disposition filed on January 15, 2021. In
    this opinion, the panel addressed Washington’s certified
    claim for ineffective assistance of trial counsel—that
    counsel did not investigate and present mitigating evidence
    at the penalty phase, including evidence of diffuse brain
    damage, childhood abuse, and substance abuse.
    Because Washington filed his habeas petition before the
    enactment of the Antiterrorism and Effective Death Penalty
    Act of 1996 (AEDPA), the panel reviewed the claim under
    the standard set out in Strickland v. Washington, 
    466 U.S. 668
     (1984), and its progeny, without the added deference
    required under AEDPA.
    The panel held that Washington did not meet his burden
    under the first Strickland prong of showing constitutionally
    deficient performance by failing to obtain and review
    Washington’s education and incarceration records, where
    there was no showing that those records contained
    meaningful mitigation evidence. The panel held that
    *
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    WASHINGTON V. SHINN                       3
    Washington did not meet his burden of showing that trial
    counsel erred by not further investigating Washington’s
    childhood abuse, to the extent that he could have, or by not
    presenting the information he did not have regarding abuse
    at sentencing hearing. The panel held that Washington’s
    allegation that trial counsel erred by not investigating and
    presenting evidence of his substance abuse fails because
    counsel was not timely informed of Washington’s substance
    abuse. The panel held that Washington also did not show
    that trial counsel erred by not seeking a psychological
    evaluation, where (1) counsel testified that nothing in his
    extensive interviews with Washington’s family and friends
    triggered any red flags signaling that further investigation of
    Washington’s mental condition would have been fruitful;
    (2) counsel for the most part knew neither of later assertions
    of diffuse brain damage, a dysfunctional family background,
    and alcohol and cocaine addiction, nor of evidence
    supporting the assertions; and (3) the record of post-
    conviction review (PCR) proceedings does not contain any
    medical records substantiating Washington’s claims of head
    injuries. The panel concluded that under the deferential
    standard required by Strickland and its progeny, counsel’s
    investigation was more than adequate, and his performance
    was reasonable.
    The panel held that even if trial counsel’s performance
    had been deficient, Washington would not be entitled to
    relief because he cannot show prejudice, where the
    sentencing judge said that Washington’s new evidence in the
    PCR hearing would not have made a difference, and a fair
    evaluation of the evidence in light of Supreme Court
    precedent confirms the soundness of the sentencing judge’s
    finding of no prejudice.
    4                  WASHINGTON V. SHINN
    The panel wrote that it is not insensitive to the fact that
    Washington is the only one of the three perpetrators who
    continues to face the death penalty. The panel emphasized,
    however, that the critical questions—whether counsel’s
    performance was constitutionally deficient and whether any
    deficiency resulted in prejudice—must be individually
    considered and separately considered in each case.
    The panel rejected Washington’s argument that trial
    counsel was ineffective because he allowed the state court to
    require a nexus between his proffered mitigating evidence
    and the crime. The panel wrote that the sentencing judge did
    consider the evidence of substance abuse, and that the
    judge’s conclusion that the evidence of substance abuse
    lacked a causal nexus to the crime was appropriate because
    a court is free to assign less weight to mitigating factors that
    did not influence a defendant’s conduct at the time of the
    crime.
    COUNSEL
    Nathaniel C. Love (argued) and Grace L.W. St. Vicent,
    Sidley Austin LLP, Chicago, Illinois; Jean-Claude André,
    Sidley Austin LLP, Los Angeles, California; Gilbert H.
    Levy, The Law Offices of Gilbert H. Levy, Seattle,
    Washington; Mark E. Haddad, University of Southern
    California Gould School of Law, Los Angeles, California;
    for Petitioner-Appellant.
    Laura P. Chiasson (argued), Assistant Attorney General,
    Capital Litigation Section; Lacey Stover Gard, Deputy
    Solicitor General/Chief of Capital Litigation; Mark
    Brnovich, Attorney General; Office of the Attorney General,
    Tucson, Arizona; for Respondent-Appellee.
    WASHINGTON V. SHINN                           5
    OPINION
    CALLAHAN, Circuit Judge:
    Arizona state prisoner Theodore Washington appeals the
    district court’s denial of his petition for a writ of habeas
    corpus under 28 U.S.C. § 2254. In 1987, a jury convicted
    Washington for the murder of Sterleen Hill and the
    attempted murder of Ralph Hill, and the trial court judge
    sentenced him to death.
    In his habeas corpus petition, Washington challenges his
    conviction and sentence on the first-degree murder charge.
    He asserts that he is entitled to habeas relief on several
    grounds, the majority of which we addressed in our
    memorandum disposition filed on January 15, 2021,
    Washington v. Ryan, 840 Fed. App’x 143 (9th Cir. 2021). In
    this opinion we again address Washington’s certified claim
    for ineffective assistance of trial counsel. 1 Washington
    contends that his counsel did not investigate and present
    mitigating evidence at the penalty phase, including evidence
    of diffuse brain damage, childhood abuse, and substance
    abuse. Applying the standard for evaluating ineffective
    assistance of counsel set forth in Strickland v. Washington,
    
    466 U.S. 668
     (1984),2 we conclude that Washington has not
    shown either that his trial counsel’s performance was
    constitutionally deficient or that the deficiencies were
    1
    Our previous opinion, Washington v. Ryan, 
    922 F.3d 419
     (9th Cir.
    2019), was withdrawn on January 15, 2021. Washington v. Ryan,
    840 Fed. App’x. 143 (9th Cir. 2021). In that order we requested that the
    parties file supplemental briefs addressing the significance of Shinn v.
    Kayer, 
    141 S. Ct. 517
     (2020). Following the submission of supplemental
    briefs, we heard re-argument on September 8, 2021.
    2
    This opinion omits parallel citations.
    6                  WASHINGTON V. SHINN
    prejudicial. Accordingly, we affirm the district court’s
    denial of his habeas petition.
    I
    At around 11:45 p.m. on the night of June 8, 1987, at
    least two men forced their way into Ralph and Sterleen Hill’s
    home in Yuma, Arizona. The men forced the Hills to lie face
    down on the floor of the master bedroom with their hands
    bound in preparation to be shot execution-style. One of the
    men intermittently “screwed” a pistol in Ralph’s ear while
    both men yelled at the couple demanding that the Hills give
    them drugs or money. Ralph glimpsed one of the assailants
    as he ransacked the drawers and closets in the room.
    Sterleen was forced to listen helplessly as her husband was
    shot first and then wait as the shotgun was reloaded,
    knowing that she would be next. Had the Hills’ teenage son,
    LeSean, not run off, it is evident that he would have suffered
    the same fate. (Ralph testified he heard a voice in the
    background say, “We better get the kid.”). The Hills were
    discovered lying face down in their bedroom. Ralph
    survived the horrendous shot to his head, but was seriously
    injured. Sterleen did not survive the shooting.
    Police arrested Fred Robinson shortly after the incident.
    Robinson was the common law husband of Susan Hill, Ralph
    Hill’s daughter from a prior marriage. Police also arrested
    Jimmy Mathers and Theodore Washington in connection
    with the crimes. Arizona charged the three men with first-
    degree murder for the death of Sterleen Hill, attempted first
    degree murder, aggravated assault causing serious physical
    injury, aggravated assault using a deadly weapon, burglary
    in the first degree, and armed robbery. The three men were
    tried together, and the jury convicted all three on all counts.
    WASHINGTON V. SHINN                      7
    A
    The penalty phase of the trial commenced on January 8,
    1988. Washington’s trial counsel, Robert Clarke, called
    three witnesses to testify on Washington’s behalf:
    Washington’s friend, Steve Thomas; Washington’s mother,
    Willa Mae Skinner; and Washington’s half-brother, John
    Mondy.
    Steve Thomas testified that he had known Washington
    for two years. He testified that Washington was easily
    influenced but not violent. He also testified that Washington
    was a dedicated father. When asked if Washington had a
    drug problem, Thomas testified that he had not noticed one.
    Willa Mae Skinner testified that Washington was a good
    child and that he dropped out of school when he was in high
    school. She also testified that Washington was a good father,
    and that he was gentle and “liked to party.” Finally, John
    Mondy reiterated that Washington was affable but easily led.
    He also confirmed that Washington had trouble in school as
    a child.
    During closing argument, Clarke focused primarily on
    attacking the sufficiency of the court’s findings under
    Enmund v. Florida, 
    458 U.S. 782
     (1982), and Tison v.
    Arizona, 
    481 U.S. 137
     (1987). Regarding mitigation, Clarke
    urged the court to consider Washington’s age, his relatively
    minor criminal record, his good relationship with his son,
    and his general demeanor as a caring individual.
    The trial court found that the state had established two
    aggravating factors beyond a reasonable doubt: (1) that the
    murder was committed in an especially cruel, heinous, or
    depraved manner, and (2) that the murder was committed
    for, or motivated by, pecuniary gain. With respect to
    mitigation, the court found that Washington’s age was not a
    8                 WASHINGTON V. SHINN
    mitigating factor and that the remaining mitigating factors
    did not outweigh the aggravating factors. The court
    sentenced all three defendants to death on the first-degree
    murder charges.
    B
    Washington, Robinson, and Mathers each appealed their
    convictions and sentences to the Arizona Supreme Court.
    The state high court affirmed Washington and Robinson’s
    convictions and sentences, State v. Robinson, 
    796 P.2d 853
    (Ariz. 1990), but found insufficient evidence to convict
    James Mathers and vacated his conviction, State v. Mathers,
    
    796 P.2d 866
     (Ariz. 1990).
    Following the direct appeal process, Washington and
    Robinson challenged their convictions and sentences on
    post-conviction review (“PCR”). The trial court held a joint
    PCR hearing on September 8, 1993. The Honorable Stewart
    Bradshaw, the same judge who presided over the trial,
    presided over the post-conviction review proceeding.
    Washington, through his appellate counsel, argued that
    Clarke was ineffective at the penalty phase due to his failure
    to present mitigating evidence. Specifically, Washington
    argued that Clarke erred by failing to conduct a more
    thorough review of his school, medical, and incarceration
    records. He also argued that Clarke should have obtained a
    psychological evaluation and presented the results to the
    court.
    The bulk of the new evidence presented at the PCR
    hearing was elicited through the testimony of Dr. Roy, the
    defense counsel’s retained psychologist. Dr. Roy evaluated
    Washington in 1992. He conducted clinical interviews and
    several psychological tests. Dr. Roy’s interviews with
    Washington revealed that he suffered abuse as a child in the
    WASHINGTON V. SHINN                      9
    form of daily whippings with straps and belts and that adults
    in the home used alcohol to sedate him as a child. His review
    of Washington’s school and Department of Corrections
    (“DOC”) records revealed that he was placed in classes for
    the “educable mentally retarded” when he was five years old
    and that he had been marked as low-IQ while incarcerated.
    However, Dr. Roy testified that these records conflicted with
    his own clinical findings because Washington tested at a
    low-to-average IQ of 96.
    Dr. Roy’s interviews with Washington also disclosed
    that Washington had substance abuse problems with cocaine
    and alcohol. Washington told Dr. Roy that he began
    drinking recreationally at age eight and was a functional
    alcoholic by age fourteen. He also told Dr. Roy that he was
    heavily intoxicated on the night of the murder. Washington
    also said that he was a heavy cocaine user and that, at the
    time of the crime, he used about $175’s worth of cocaine per
    day.
    Finally, Dr. Roy testified that he believed that
    Washington suffered from diffuse brain damage resulting
    from early and prolonged drug and alcohol use and
    numerous traumatic head injuries. Dr. Roy testified that
    diffuse brain damage can result in disinhibition and poor
    social judgment as well as poor impulse control and an
    inability to appreciate the long-term consequences of one’s
    actions. Dr. Roy testified that, in his opinion, Washington’s
    cocaine addiction and his impaired impulse control likely
    contributed to his ability to be manipulated by others into
    making poor decisions.
    The state called Dr. Eva McCullars, a psychiatrist who
    also evaluated Washington. Dr. McCullars reviewed
    Dr. Roy’s report and conducted clinical interviews with
    Washington in June 1993. Dr. McCullars testified that she
    10                WASHINGTON V. SHINN
    did not review Washington’s DOC records, school records,
    or adult incarceration records. Dr. McCullars agreed that
    Washington suffered from diffuse brain damage, but
    concluded that Washington also suffered from antisocial
    personality disorder. On direct examination, the state asked
    Dr. McCullars whether diffuse brain damage could cause
    hyperkinesis (hyperactive behavior or attention deficit
    disorder). Dr. McCullars explained that “[hyperkinesis] is
    one example of diffuse brain damage.” She went on to
    explain that several prominent individuals including Walt
    Disney and Thomas Edison exhibited hyperkinetic behavior
    as children. When questioned on cross examination,
    Dr. McCullars acknowledged that Washington came from a
    “significantly dysfunctional family.” She also admitted that
    several of the markers for antisocial personality disorder,
    such as early truancy and an inability to maintain
    employment, were more frequently associated with lower
    socio-economic status Black adolescents, such as
    Washington, when compared to the general population.
    Clarke, Washington’s trial counsel, also testified at the
    PCR hearing. He testified that he did not request
    Washington’s education or corrections records because he
    believed his interviews with Washington, Skinner, Mondy,
    and Washington’s common law wife, Barbara Bryant, were
    sufficient. Clarke testified that he had “very extensive
    discussions” with Washington about what his life was like
    and any possible substance abuse issues. He also testified
    that he had “relatively extensive” discussions with
    Washington’s mother, half-brother, and Bryant. Clarke
    testified that, based on these interviews, “there wasn’t
    anything that clued me in that there was a special problem
    that would suggest I should obtain those types of records.”
    With respect to Washington’s drug use, Clarke testified that
    Washington never told him that he was addicted to cocaine
    WASHINGTON V. SHINN                       11
    or that he was using cocaine on the night of the murder.
    When questioned on the matter, Clarke acknowledged that
    Bryant had told him that Washington had a “cocaine
    problem,” but that he did not investigate further.
    In a written order, Judge Bradshaw held that Washington
    was not entitled to relief for ineffective assistance of counsel
    at the penalty phase.             Judge Bradshaw credited
    Dr. McCullars’s findings that Washington had antisocial
    personality disorder and was poorly adjusted to living in
    society. However, Judge Bradshaw concluded that “there is
    nothing . . . which lessened his ability to differentiate right
    from wrong or conform his actions with the law.” Judge
    Bradshaw also explained that he had been aware at the time
    of sentencing that Washington had been doing well while
    incarcerated. Judge Bradshaw further reasoned that any
    drug and alcohol dependency “taken separately or with any
    other mitigating circumstance or circumstances would [not]
    have mitigated against the sentence [Washington] has
    received.”
    On April 25, 1995, the Arizona Supreme Court
    summarily denied Washington’s petition for review of the
    PCR court’s decision.
    C
    Washington then commenced his habeas action in the
    federal district court, culminating in this appeal. In his
    amended federal habeas corpus petition, Washington raised
    17 claims. The district court determined that certain claims
    were procedurally barred, and on April 22, 2005, the district
    court rejected the remaining claims on their merits and
    dismissed the petition. Washington filed a motion to alter the
    judgment on May 5, 2005, which the district court denied on
    June 8, 2005.
    12                 WASHINGTON V. SHINN
    On July 11, 2005, Washington filed an untimely notice
    of appeal from the district court’s denial of habeas relief. A
    three-judge panel of this court held that it lacked jurisdiction
    and affirmed the district court’s denial of Rule 60(b) relief.
    Washington v. Ryan, 
    789 F.3d 1041
     (9th Cir. 2015). We then
    granted Washington’s motion for en banc rehearing.
    Washington v. Ryan, 
    811 F.3d 299
     (9th Cir. 2015). In a 6–5
    decision, we held that Washington was entitled to relief
    under Rule 60(b)(1) and (6) from his untimely notice of
    appeal and ordered the district court to “vacate and reenter
    its judgment denying Washington’s petition for writ of
    habeas corpus, nunc pro tunc, June 9, 2005,” to render the
    notice of appeal timely. Washington v. Ryan, 
    833 F.3d 1087
    ,
    1102 (9th Cir. 2016). The United States Supreme Court
    denied the state’s petition for writ of certiorari. Ryan v.
    Washington, 
    137 S. Ct. 1581
     (2017) (mem.).
    Meanwhile, in 2005, the district court issued a 48-page
    memorandum and order denying Washington’s habeas
    petition. In his PCR proceedings, Washington had “alleged
    that Clarke rendered ineffective assistance of counsel by
    failing to interview him regarding potential mitigation and
    by failing to present evidence of good behavior during
    incarceration, his unstable family background, and the
    absence of a violent history or propensity.”
    In rejecting Washington’s claims of ineffective
    assistance of counsel, the district court held that Washington
    had to “identify the acts or omissions of counsel that are
    alleged not to have been the result of reasonable professional
    judgment,” (quoting Strickland, 
    466 U.S. at 690
    ). It further
    noted that Washington had to “overcome the presumption
    that under the circumstances, the challenged action might be
    considered sound trial strategy,” and that it must “judge the
    reasonableness of counsel’s challenged conduct on the facts
    WASHINGTON V. SHINN                       13
    of the particular case, viewed as of the time of counsel’s
    conduct.”
    The district court recognized that counsel had a duty to
    conduct a reasonable investigation and that a failure to
    adequately investigate and present mitigating evidence can
    constitute deficient performance. However, the district court
    concluded that while Clarke could have conducted
    additional investigation of Washington’s background for
    potential mitigation, it could not conclude “that Clarke
    performed deficiently by failing to do so.” The court noted
    that Clarke was an experienced attorney who had worked
    both as a prosecutor and as defense counsel, had tried 30 to
    50 jury trials, and had tried three or four capital cases before
    he was appointed to represent Washington. The district
    court stated that Clarke had “began investigating possible
    mitigation as he investigated the facts of the case,” had very
    extensive discussions with Washington “regarding what his
    life was like from when he was a young man to the present,”
    and had rather extensive discussions with Washington’s
    common-law wife (Bryant), brother, and mother. The court
    observed that Clarke testified that he had questioned
    Washington very closely about his drug use and alcohol
    intake and about possible physical abuse during his
    childhood.
    Clarke acknowledged that he did not seek Washington’s
    school records because he relied on family members to
    provide information regarding his education. Clarke did not
    seek Washington’s incarceration records because they were
    “unlikely to have records relevant to potential mitigation,
    such as psychological records, because Petitioner had only
    been incarcerated for two years for burglary and was not ‘a
    hardened criminal.’” Clarke also explained that he did not
    seek a mental health evaluation of Washington because “he
    14                 WASHINGTON V. SHINN
    had not observed anything from his many lengthy meetings
    with Petitioner, or interviews of Petitioner’s family, that
    suggested that such an evaluation was warranted.” Clarke
    further testified that he had questioned family members
    about any “medical problems” or “anything out of the
    ordinary” in Washington’s background, but had not
    requested his medical history. Finally, Clarke, while
    acknowledging that Bryant had told him that Washington
    had a “cocaine problem,” claimed that Washington had
    never told him that he was addicted to cocaine or had used
    cocaine the day of the crime; Washington had only stated
    that he had been intoxicated.
    The district court noted that Washington “presented no
    evidence at the state PCR evidentiary hearing to contradict
    Clarke’s testimony.” Although Washington in his affidavit
    averred that Clarke did not discuss the penalty phase with
    him until twenty minutes before the hearing, the district
    court determined that “Clarke’s presentation of three
    witnesses at sentencing, each of whom had traveled to Yuma
    from at least as far away as Banning is alone sufficient to
    discredit the implication that Clarke failed to prepare for the
    sentencing until minutes before the aggravation/mitigation
    hearing.” The district court further found at his PCR hearing
    in state court, Washington had not presented any evidence
    from Bryant or family members that contradicted Clarke’s
    testimony and that the PCR court “clearly found Clarke more
    credible than Petitioner’s affidavit on these points.”
    Furthermore, Washington presented no evidence that his
    school records or his incarceration records would have
    revealed potential mitigation. Rather, the single reference in
    Washington’s school records that he was “educable mentally
    retarded” was contradicted by Dr. Roy’s own testing of
    Washington which showed that he had average or low-
    average intelligence and “was not retarded.”
    WASHINGTON V. SHINN                             15
    The district court determined that Washington had not
    shown that Clarke acted unreasonably in not seeking a
    mental health evaluation. The court observed that there was
    “scant evidence” that Washington had been treated for any
    prior mental illness or had any mental health history, and that
    there was no evidence that Washington, his family members,
    or friends ever disclosed any concerning incidents to Clarke
    or suggested that such incidents would have led to relevant
    mitigation.3 The district court noted that there was no
    evidence that anyone had told Clarke that Washington had
    suffered several head injuries during his childhood and
    adolescence.
    The district court further credited Clarke’s statements
    that Washington only told him that he was intoxicated the
    night of the crime and never said that he had also used
    cocaine and was an alcoholic and a drug addict. The court
    concluded that Clarke had little reason to further investigate
    Washington’s substance abuse and that Clarke had not
    “conducted an unreasonable investigation.” The district
    court concluded that “Clarke’s investigation and
    presentation of mitigation was reasonable and that he did not
    perform deficiently.”
    The district court further found that even if Clarke had
    performed deficiently, Washington had not shown that he
    3
    In his affidavit Washington reported that after he got into trouble
    when he was fifteen, he received psychiatric counseling as part of his
    rehabilitation. He told Dr. Roy that the psychologist concluded that the
    death of Washington’s father had left him without a male figure in his
    life and this was responsible for the difficulties he experienced.
    Washington also told Dr. Roy that in 1981 he was taken to the
    Sacramento County Hospital after overdosing on LSD and passing out,
    and was admitted to the psychiatric unit, but Dr. Roy noted that there
    was no evidence regarding the length of his stay, treatment, or diagnosis.
    16                    WASHINGTON V. SHINN
    was prejudiced. Again citing Strickland, 
    466 U.S. at 691, 694,
     the court noted that “an error by counsel, even if
    professionally unreasonable, does not warrant setting aside
    the judgment of a criminal proceeding if the error had no
    effect on the judgment,” that the petitioner “must show that
    there is a reasonable probability that, but for counsel’s
    unprofessional errors, the result of the proceeding would
    have been different,” and that a reasonable probability is a
    probability sufficient to undermine confidence in the
    outcome. The court noted that it is “asked to imagine what
    the effect might have been upon a sentencing judge, who was
    following the law, especially one who had heard the
    testimony at trial.” 4
    The district court noted that the state PCR court (Judge
    Bradshaw), “before whom Petitioner was tried, heard all of
    the additional mitigation evidence proffered by Petitioner,
    . . . credited Dr. McCullars’s finding of antisocial
    personality disorder and concluded that Petitioner had not
    demonstrated a reasonable probability that his sentence
    would have been different if that mitigation had been
    presented at trial.”
    4
    The district court noted that “[a]t the time [Washington] was
    sentenced, Arizona’s death penalty statute required a judge to impose a
    death sentence if one or more aggravating circumstance were proven
    beyond a reasonable doubt and the mitigation established by a
    preponderance of the evidence was not sufficiently substantial to call for
    leniency.” In Ring v. Arizona, 
    536 U.S. 584
    , 609 (2002), the Supreme
    Court ruled that a sentencing judge, sitting without a jury, may not find
    an aggravating factor necessary for imposition of the death penalty.
    However, in Schriro v. Summerlin, 
    542 U.S. 348
    , 358 (2004), the
    Supreme Court held that Ring does not apply retroactively to cases such
    as Washington’s that were already final on direct review at the time Ring
    was decided.
    WASHINGTON V. SHINN                      17
    Addressing Washington’s intoxication on the night of
    the crime, the district court noted that under Arizona law,
    intoxication at the time of a crime can constitute a statutory
    mitigation if the defendant establishes that his capacity to
    appreciate the wrongfulness of his conduct or his ability to
    conform his conduct to the requirements of law was
    significantly impaired, but not so impaired as to constitute a
    defense to prosecution. The burden is on the defendant to
    establish this mitigation. See State v. Woratzeck, 
    657 P.2d 870
    –71 (Ariz. 1982) (holding “appellant had failed to show
    as a mitigating circumstance that intoxication caused
    significant impairment of his capacity to appreciate the
    wrongfulness of his conduct or to conform his conduct to the
    requirement of law”). The district court noted that under
    Arizona case law, “self-reports of voluntary intoxication at
    the time a crime was committed are subject to searching
    skepticism because of the obvious motive to fabricate,” “a
    defendant’s claim of alcohol or drug impairment may be
    rebutted by evidence that he took steps to avoid detection
    shortly after the murder or when it appears that intoxication
    did not overwhelm the defendant’s ability to control his
    physical behavior,” and “a long history of drug dependence,
    absent evidence that a defendant was actually impaired at the
    time of the crime, does not constitute mitigation.”
    The district court concluded that the newly proffered
    evidence of impairment would be accorded little weight. It
    noted that the only evidence, other than self-reporting, “was
    Bryant’s testimony that Petitioner sounded intoxicated when
    he called her at least two hours after the offense.” The court
    noted that although Washington told the experts that he was
    intoxicated the night of the crime, neither expert opined as
    to his capacity to appreciate the wrongfulness of his conduct.
    Moreover, “evidence supports that Petitioner fled from the
    Hills’ home immediately after they were shot, that he called
    18                WASHINGTON V. SHINN
    Bryant, and ultimately purchased a bus ticket to return to
    Banning.”
    Addressing the proffered evidence of mental
    impairment, the district court noted that under Arizona law,
    “major mental impairments, such as mental illness or brain
    damage, carry far more mitigating weight than does a
    personality disorder if such impairments demonstrate a
    defendant’s inability to control his conduct or to appreciate
    the differences between right and wrong.” See Ariz. Rev.
    Stat. § 13-703(G)(1) (2008). The court noted that although
    Dr. Roy concluded that Washington had diffuse brain
    damage, he did not find that such damage significantly
    impaired Washington’s capacity to appreciate the
    wrongfulness of his conduct or to conform his conduct to the
    requirement of law. Dr. McCullars found no indication that
    diffuse brain damage impaired Washington’s capacity. The
    district court concluded that the proffered evidence of mental
    impairment was entitled to minimal weight.
    Addressing evidence of a dysfunctional family
    background, the district court noted that under Arizona law
    “while a difficult family background, including childhood
    abuse, may be relevant mitigation at the penalty phase,
    dysfunctional family history is entitled to significant
    mitigating weight only if it had a causal connection to the
    offense-related conduct.” Moreover, the weight accorded a
    difficult family background may be discounted for an adult
    offender. The district court concluded that the additional
    evidence of Washington’s family background was entitled to
    little weight because neither expert identified any causal
    connection to Washington’s participation in the murder and
    Washington was 27 years-old at the time of the crime.
    The district court concluded that there was no reasonable
    probability that the additional mitigation proffered by
    WASHINGTON V. SHINN                     19
    Washington would have altered his sentence. The court
    noted that even if Washington “was not the actual shooter,”
    there was evidence that he “went into the Hills’ home
    seeking drugs and money and that he knew before entering
    the home that one or more of its occupants might be shot, ‘if
    things [got] rough,’” and that he “participated in forcing
    entry into the home, tying up the elderly occupants (face
    down on the floor) and ransacking their bedroom for
    valuables.” The district court concluded that Washington’s
    proffered evidence of voluntary intoxication at the time of
    the crime, a chronic substance abuse problem, diffuse brain
    damage, an antisocial personality disorder, and a
    dysfunctional family background, did not, separately or
    combined, impair “his capacity to control his conduct to the
    law’s requirements or know the difference between right and
    wrong.” Moreover, Washington had failed to show any
    causal connection of these factors with the crime that might
    help explain and thus mitigate his role in the murder.
    Accordingly, the district court found that Washington had
    not demonstrated that he was prejudiced by counsel’s
    alleged deficient performance.
    II
    We review de novo a district court’s decision to grant or
    deny a habeas petition under 28 U.S.C. § 2254. See Bean v.
    Calderon, 
    163 F.3d 1073
    , 1077 (9th Cir. 1998). Because
    Washington filed his habeas petition before the enactment of
    the Antiterrorism and Effective Death Penalty Act of 1996
    (“AEDPA”), the provisions of AEDPA do not apply to this
    case. 
    Id.
     (citing Jeffries v. Wood, 
    114 F.3d 1484
    , 1495–96
    (9th Cir. 1997) (en banc)). Instead, we review the claim
    under the familiar standard set out in Strickland and its
    20                    WASHINGTON V. SHINN
    progeny without the added deference required under
    AEDPA. 5
    III
    Although the principles underlying and governing a
    claim of ineffective assistance of counsel are familiar, they
    bear repeating. “The right to counsel is a fundamental right
    of criminal defendants; it assures the fairness, and thus the
    legitimacy, of our adversary process.” Kimmelman v.
    Morrison, 
    477 U.S. 365
    , 374 (1986). “[T]he right to counsel
    is the right to the effective assistance of counsel.” Strickland,
    
    466 U.S. at 686
     (quoting McMann v. Richardson, 
    397 U.S. 759
    , 771 n.14 (1970)). Under Strickland’s two-part test for
    claims of ineffective assistance of counsel, a convicted
    defendant must show (1) constitutionally deficient
    performance by counsel (2) that prejudiced the defense. 
    Id. at 687
    .
    “The essence of an ineffective-assistance claim is that
    counsel’s unprofessional errors so upset the adversarial
    balance between defense and prosecution that the trial was
    rendered unfair and the verdict rendered suspect.”
    Kimmelman, 
    477 U.S. at 374
    . “As is obvious, Strickland’s
    standard, although by no means insurmountable, is highly
    demanding.” 
    Id. at 382
    ; see also Padilla v. Kentucky,
    
    559 U.S. 356
    , 371 (2010) (“Surmounting Strickland’s high
    bar is never an easy task.”). “Only those habeas petitioners
    who can prove under Strickland that they have been denied
    5
    Although we held this appeal for the Supreme Court’s opinion in
    Shinn, 
    141 S. Ct. 517
    , its treatment of AEDPA is not applicable to this
    appeal. However, the Supreme Court reaffirmed that Strickland provides
    the framework for assessing claims of ineffective assistance of counsel.
    
    Id. at 522
    .
    WASHINGTON V. SHINN                        21
    a fair trial by the gross incompetence of their attorneys will
    be granted the writ . . . .” Kimmelman, 
    477 U.S. at 382
    .
    “When counsel focuses on some issues to the exclusion
    of others, there is a strong presumption that he did so for
    tactical reasons rather than through sheer neglect.”
    Yarborough v. Gentry, 
    540 U.S. 1
    , 8 (2003) (citing
    Strickland, 
    466 U.S. at 690
    ). Even if inadvertence (not
    tactical reasoning) results in non-pursuit of a particular issue,
    “relief is not automatic. The Sixth Amendment guarantees
    reasonable competence, not perfect advocacy judged with
    the benefit of hindsight.” 
    Id.
    To prevail on his claim for ineffective assistance of
    counsel, Washington must establish that Clarke’s
    performance was deficient and that he suffered prejudice as
    a result. See Strickland, 
    466 U.S. at 687
    . To establish
    deficient performance, Washington must show that
    “counsel’s representation fell below an objective standard of
    reasonableness.” 
    Id. at 688
    . To establish prejudice,
    Washington must show that there is “a reasonable
    probability that, but for counsel’s unprofessional errors, the
    result of the proceeding would have been different.” 
    Id. at 694
    .
    In articulating the standard against which counsel’s
    performance should be judged, Strickland emphasized the
    deference due to a lawyer’s decisions both as to scope of
    investigation and decisions made after investigation:
    “[S]trategic choices made after thorough investigation of
    law and facts relevant to plausible options are virtually
    unchallengeable . . . .” Strickland, 
    466 U.S. at 690
    . We have
    likewise recognized the wide latitude to be given to
    counsel’s tactical choices. See, e.g., United States v.
    Ferreira-Alameda, 
    815 F.2d 1251
    , 1253 (9th Cir. 1986)
    (“Review of counsel’s performance is highly deferential and
    22                 WASHINGTON V. SHINN
    there is a strong presumption that counsel’s conduct fell
    within the wide range of reasonable representation.”). Yet
    our deference to counsel’s performance is not unlimited. As
    the Court explained in Strickland, counsel’s strategic choices
    made after less than complete investigation are reasonable
    only to the extent that “reasonable professional judgments
    support the limitations on investigation.” 
    466 U.S. at 690
    –
    91.
    IV
    A
    Washington has not met his burden under the first
    Strickland prong of showing that Clarke provided
    constitutionally deficient performance by failing to obtain
    and review Washington’s education and incarceration
    records.
    First, there is no showing that the education records
    themselves contain meaningful mitigation evidence. The
    single proffered item of mitigation in Washington’s
    education records is a 1965 comment (from when
    Washington was five years old) that he should be placed in
    special classes for the “educable mentally retarded.” But
    that single, decades-old notation is inconsequential when
    compared with more than ten additional years of schooling
    in the general population. Among the evidence Clarke
    presented at trial was testimony about Washington
    struggling in school and dropping out in the tenth or eleventh
    grade. Moreover, any suggestion that the school records
    showed a meaningfully low IQ is contradicted by later IQ
    testing by Washington’s own expert, Dr. Roy. Indeed,
    Washington has never even suggested the possibility of
    intellectual disability. In sum, the district court was correct
    in observing that Washington “presented no evidence that
    WASHINGTON V. SHINN                    23
    his school records . . . would have revealed potential
    mitigation.”
    Similarly, Washington has not shown that his California
    incarceration records contained any meaningful mitigating
    materials. As noted by Clarke, Washington was only
    incarcerated for two years for burglary. Washington does
    not indicate what the incarceration records would have
    revealed. Furthermore, Judge Bradshaw stated that he was
    aware at the time of sentencing of Washington’s good
    behavior during his incarceration.
    B
    Washington has also not met his burden of showing that
    Clarke erred by not investigating and presenting evidence of
    his childhood abuse. In his conversations with Dr. Roy,
    Washington revealed that he suffered physical abuse as a
    child in the form of daily whippings and beatings. Roy was
    also told that Washington was given alcohol as a child to
    control his behavior. Both psychological experts who
    testified at the PCR hearing agreed that Washington’s
    childhood was significantly dysfunctional. However, none
    of this information had come to Clarke’s attention before or
    during the trial. Clarke, at least initially, had to rely on
    representations by Washington and his family members in
    determining the extent of Washington suffered childhood
    abuse. At the time of his trial, neither Washington nor his
    family members had indicated to Clarke that Washington
    had suffered extreme abuse growing up. Accordingly,
    Clarke did not err by not further investigating Washington’s
    childhood abuse, to the extent that he could have, or by not
    presenting the information he did not have regarding abuse
    at the sentencing hearing. See Strickland, 
    466 U.S. at 691
    (“[W]hen a defendant has given counsel reason to believe
    that pursuing certain investigations would be fruitless or
    24                WASHINGTON V. SHINN
    even harmful, counsel’s          failure to pursue those
    investigations may not           later be challenged as
    unreasonable.”).
    C
    Similarly, Washington’s allegation that Clarke erred by
    not investigating and presenting evidence of his substance
    abuse fails because Clarke was not timely informed of
    Washington’s substance abuse. Clarke reasonably relied on
    his conversations with Washington and his friends and
    family, which did not indicate any substance abuse.
    Washington had told Clarke that he was heavily intoxicated
    on the night of the crimes, but he did not mention any
    ongoing problems with drugs or with alcohol. Similarly,
    Washington’s mother described him as someone who “liked
    to party,” but also did not say that Washington had problems
    with addiction. Perhaps the single clue Clarke had that
    might have raised his suspicions about substance abuse was
    the statement of Washington’s common-law wife that
    Washington had a “cocaine problem.” However, when set
    against Washington’s own statements and those of his family
    members, Clarke’s decision not to further investigate
    Washington’s drug addiction was not objectively
    unreasonable.
    D
    Finally, Washington has not shown that Clarke erred by
    not seeking a psychological evaluation.            Clarke’s
    investigation included extensive discussions with
    Washington and Washington’s family and friends. Clarke
    asked Washington and his family members about whether
    Washington “had any propensity to violence,” “about his
    drug use,” “about his alcohol intake,” “about whether or not
    he was abused, growing up,” about “what discipline was
    WASHINGTON V. SHINN                         25
    like,” and “things of that nature.” At the PCR hearing,
    Clarke testified that, in all the interviews with Washington
    and his family, nothing triggered any red flags signaling that
    further investigation of his mental condition would have
    been fruitful. There does not appear to have been anything
    in Washington’s education and incarceration records that
    contradicts this conclusion. Washington’s later assertions of
    diffuse brain damage, a dysfunctional family background,
    and alcohol and cocaine addiction, if supported by evidence,
    might lead competent counsel to seek a psychological
    evaluation, but Clarke, for the most part, knew neither of the
    assertions nor of evidence supporting the assertions. At the
    PCR hearing, the experts disagreed as to whether diffuse
    brain damage was disabling 6 and the proffered evidence of
    head injuries was less than compelling. Dr. McCullars found
    that Washington’s historical reporting varied from one
    interviewer to another. Indeed, the record of the PCR
    proceedings does not contain any medical records
    substantiating Washington’s claims of head injuries. Also,
    Clarke had extensive discussions with Washington and his
    family and friends about whether he had been abused
    growing up, and reasonably determined that Washington’s
    family members would make better witnesses than a
    psychologist who might examine Washington for a
    relatively brief period (and might not offer any mitigating
    conclusions). In addition, Washington’s claims of addiction,
    for the most part, were self-reported well after his trial and
    do not square with his prior statements to Clarke admitting
    only that he had been drinking on the day of the crime.
    6
    Dr. McCullars stated that diffuse brain damage was present in
    approximately ten to fifteen percent of the population and did not
    necessarily impair an individual’s functioning.
    26                 WASHINGTON V. SHINN
    Under the deferential standard required by Strickland
    and its progeny, Clarke’s investigation was more than
    adequate, and his performance was reasonable.
    V
    A
    Even if Clarke’s performance had been deficient, under
    Strickland, Washington would not be entitled to relief unless
    he could also show that the deficiency was prejudicial. “The
    benchmark for judging any claim of ineffectiveness must be
    whether counsel’s conduct so undermined the proper
    functioning of the adversarial process that the trial cannot be
    relied on as having produced a just result.” Strickland,
    
    466 U.S. at 686
    . Strickland “requires showing that counsel’s
    errors were so serious as to deprive the defendant of a fair
    trial, a trial whose result is reliable.” 
    Id. at 687
    . To prove
    prejudice, a defendant must show “a reasonable probability
    that, but for counsel’s unprofessional errors, the result of the
    proceeding would have been different. A reasonable
    probability is a probability sufficient to undermine
    confidence in the outcome.” 
    Id. at 694
    .
    “It is not enough ‘to show that the errors had some
    conceivable effect on the outcome of the proceeding.’
    Counsel’s errors must be ‘so serious as to deprive the
    defendant of a fair trial, a trial whose result is reliable.’”
    Harrington v. Richter, 
    562 U.S. 86
    , 104 (2011) (citations
    omitted) (quoting Strickland, 
    466 U.S. at 687
    ). Although the
    reasonable probability standard “does not require a showing
    that counsel’s actions ‘more likely than not altered the
    outcome,’ . . . the difference between Strickland’s prejudice
    standard and a more-probable-than-not standard is slight and
    matters ‘only in the rarest case.’” 
    Id. at 111
    –12 (quoting
    Strickland, 
    466 U.S. at 693, 697
    ); see 
    id. at 112
     (“The
    WASHINGTON V. SHINN                      27
    likelihood of a different result must be substantial, not just
    conceivable.”).
    To determine whether Washington has met his burden of
    showing prejudice, we must “reweigh the evidence in
    aggravation against the totality of available mitigating
    evidence.” Wiggins v. Smith, 
    539 U.S. 510
    , 534 (2003). This
    comparison cannot be made without first clearly identifying
    the evidence in mitigation that would have been offered at
    the penalty phase of trial but for counsel’s grossly
    incompetent performance. As noted in our prior retracted
    opinion, perhaps Washington’s best argument is that Clarke
    was incompetent in failing to present “evidence concerning
    Washington’s potentially impaired cognitive functions.”
    This refers to Dr. Roy’s assertions that Washington had
    symptoms of diffuse brain damage, likely caused by multiple
    head injuries incurred when Washington was young, and that
    diffuse brain damage contributes to a “lack of judgment” and
    an “inability to establish stability in life.”
    In reweighing this evidence, we must take as our baseline
    the evidence of aggravation and mitigation offered at trial
    and the resulting sentence. After considering the details of
    the brutal, execution-style murder and attempted murder,
    and weighing it against the mitigation evidence
    Washington’s counsel presented, Judge Bradshaw sentenced
    Washington to death. With that starting point in mind, we
    undertake the theoretical inquiry of determining whether it
    is reasonably likely that Washington would have received a
    different sentence if the new mitigation evidence were to be
    added to the mix of mitigation evidence that was presented
    at trial.
    Of course, no guesswork is needed here. We know that
    Washington’s new evidence would not have made a
    difference because the sentencing judge said so. See Cook v.
    28                 WASHINGTON V. SHINN
    Ryan, 
    688 F.3d 598
    , 612 (9th Cir. 2012) (finding no
    prejudice where “the same trial judge who sentenced” the
    petitioner to death stated that the new evidence “would not
    have made any difference”). Judge Bradshaw “considered
    all of [the new] information in the post-conviction hearing
    and” definitively “held that none of it would have altered his
    judgment as to the proper penalty for” Washington.
    Gerlaugh v. Stewart, 
    129 F.3d 1027
    , 1036 (9th Cir. 1997).
    B
    A fair evaluation of the evidence in light of Supreme
    Court precedent confirms the soundness of Judge
    Bradshaw’s finding of no prejudice. Because of Strickland’s
    “highly demanding” standard, Kimmelman, 
    477 U.S. at 382,
    it is no surprise that petitioners have historically found little
    success bringing ineffective assistance of counsel claims.
    However, beginning in 2000, the Supreme Court found
    Strickland’s “high bar” satisfied in four cases involving
    claims of ineffective assistance of counsel at the penalty
    phase of a capital trial: Williams v. Taylor, 
    529 U.S. 362
    (2000); Wiggins, 
    539 U.S. 510
    ; Rompilla v. Beard, 
    545 U.S. 374
     (2005); and Porter v. McCollum, 
    558 U.S. 30
     (2009).
    These decisions serve as guideposts for determining when
    relief is warranted in such cases.
    In Williams, the jury fixed the punishment at death after
    hearing evidence of a long history of criminal conduct
    including armed robbery, burglary and grand larceny, auto
    thefts, violent assaults on elderly victims, and arson.
    
    529 U.S. at 368
    –70. At sentencing, defense counsel offered
    very little evidence. 
    Id. at 369
    . In addressing Williams’
    Strickland claim, the Supreme Court cited “graphic” details
    “of Williams’ childhood, filled with abuse and privation,”
    evidence that Williams was “borderline mentally retarded,”
    WASHINGTON V. SHINN                      29
    and other significant mitigation evidence that was not
    unearthed only because of counsel’s deficient performance:
    [C]ounsel did not begin to prepare for that
    phase of the proceeding until a week before
    the trial.     They failed to conduct an
    investigation that would have uncovered
    extensive records graphically describing
    Williams’ nightmarish childhood, not
    because of any strategic calculation but
    because they incorrectly thought that state
    law barred access to such records. Had they
    done so, the jury would have learned that
    Williams’ parents had been imprisoned for
    the criminal neglect of Williams and his
    siblings, that Williams had been severely and
    repeatedly beaten by his father, that he had
    been committed to the custody of the social
    services bureau for two years during his
    parents’ incarceration (including one stint in
    an abusive foster home), and then, after his
    parents were released from prison, had been
    returned to his parents’ custody.
    
    Id. at 395, 398
     (citation and footnote omitted). In concluding
    Williams had shown prejudice, the Court noted that the same
    judge who presided over the criminal trial heard Williams’
    post-conviction review claims. 
    Id. at 396
    . That trial judge,
    who initially “determined that the death penalty was ‘just’
    and ‘appropriate,’ concluded that there existed ‘a reasonable
    probability that the result of the sentencing phase would
    have been different’” if evidence developed in the post-
    conviction proceedings had been offered at sentencing. 
    Id. 396
    –97.
    30                WASHINGTON V. SHINN
    In Wiggins, trial counsel focused their strategy at
    sentencing on arguing that the defendant was not directly
    responsible for the murder, and they did not present any
    other mitigation evidence, despite knowledge of at least
    some of the defendant’s troubled background. 
    539 U.S. at 515
    –26. The Court cited “powerful” mitigation evidence
    that counsel either had, or should have, discovered. 
    Id. at 534
    –35. When Wiggins was a young child, his alcoholic
    mother frequently left him and his siblings home alone for
    days without food, “forcing them to beg for food and to eat
    paint chips and garbage.” 
    Id. at 516
    –17. The mother beat
    Wiggins and his siblings and had sex with men while her
    children slept in the same bed. 
    Id. at 517
    . On one occasion,
    the mother forced Wiggins’ hand against a hot stove burner,
    resulting in his hospitalization. 
    Id.
     After being removed
    from his mother’s custody and placed in foster care, Wiggins
    was physically abused and “repeatedly molested and raped”
    by one foster father, and gang-raped on multiple occasions
    by a foster mother’s sons. 
    Id.
     He ran away from one foster
    home and began living on the streets. 
    Id.
     The Court held that
    had the jury been presented with Wiggins’ “excruciating life
    history,” rather than virtually no mitigation evidence, “there
    is a reasonable probability that at least one juror would have
    struck a different balance.” 
    Id. at 537
    .
    In Rompilla, trial counsel undertook a number of efforts
    to investigate possible mitigating evidence, “including
    interviews with Rompilla and some members of his family,
    and examinations of reports by three mental health experts
    who gave opinions at the guilt phase,” but none of these
    sources was helpful. 
    545 U.S. at 381
    . Notwithstanding these
    efforts, the Court found one “clear and dispositive” error by
    counsel. 
    Id. at 383
    . Defense counsel knew the prosecution
    intended to seek the death penalty and would hinge its
    penalty case on Rompilla’s prior conviction for rape and
    WASHINGTON V. SHINN                    31
    assault. 
    Id.
     Counsel nevertheless failed to even look at the
    court file for the prior conviction; had they done so “they
    would have found a range of mitigation leads that no other
    source had opened up.” 
    Id. at 384, 390
    . The mitigation
    evidence that would have been available from simply
    looking at the files included, among other things:
    Rompilla’s parents were both severe
    alcoholics who drank constantly. His mother
    drank during her pregnancy with Rompilla,
    and he and his brothers eventually developed
    serious drinking problems. His father, who
    had a vicious temper, frequently beat
    Rompilla’s mother, leaving her bruised and
    black-eyed, and bragged about his cheating
    on her. His parents fought violently, and on
    at least one occasion his mother stabbed his
    father. He was abused by his father who beat
    him when he was young with his hands, fists,
    leather straps, belts and sticks. All of the
    children lived in terror. There were no
    expressions of parental love, affection or
    approval. Instead, he was subjected to
    yelling and verbal abuse. His father locked
    Rompilla and his brother Richard in a small
    wire mesh dog pen that was filthy and
    excrement filled.      He had an isolated
    background, and was not allowed to visit
    other children or to speak to anyone on the
    phone. They had no indoor plumbing in the
    house, he slept in the attic with no heat, and
    the children were not given clothes and
    attended school in rags.
    32                WASHINGTON V. SHINN
    
    Id. at 391
    –92. All the evidence counsel failed to discover
    simply by failing to look at the court file of the prior
    conviction “add[ed] up to a mitigation case that bears no
    relation to the few naked pleas for mercy actually put before
    the jury.” 
    Id. at 393
    . The Court thus concluded there was a
    reasonable probability of a different result had counsel
    performed adequately. 
    Id.
    In Porter, penalty phase counsel offered scant evidence
    on behalf of Porter. “The sum total of the mitigating
    evidence was inconsistent testimony about Porter’s behavior
    when intoxicated and testimony that Porter had a good
    relationship with his son.” Porter, 
    558 U.S. at 32
    . Post-
    conviction review proceedings revealed several facts about
    Porter’s “abusive childhood, his heroic military service and
    the trauma he suffered because of it, his long-term substance
    abuse, and his impaired mental health and mental capacity.”
    
    Id. at 33
    .
    Porter routinely witnessed his father beat his
    mother, one time so severely that she had to
    go to the hospital and lost a child. Porter’s
    father was violent every weekend, and by his
    siblings’ account, Porter was his father’s
    favorite target, particularly when Porter tried
    to protect his mother. On one occasion,
    Porter’s father shot at him for coming home
    late, but missed and just beat Porter instead.
    
    Id.
     Porter’s company commander in the Army also offered
    a “moving” account of Porter’s heroic efforts “in two of the
    most critical—and horrific—battles of the Korean War,” for
    which Porter “received two Purple Hearts and the Combat
    Infantryman Badge, along with other decorations.” 
    Id. at 30, 34
    –35, 41. A neuropsychologist “concluded that Porter
    WASHINGTON V. SHINN                     33
    suffered from brain damage that could manifest in
    impulsive, violent behavior.” 
    Id. at 36
    . The expert also
    testified that “[a]t the time of the crime . . . Porter was
    substantially impaired in his ability to conform his conduct
    to the law and suffered from an extreme mental or emotional
    disturbance,” which would have provided a basis for two
    statutory mitigating circumstances. 
    Id.
    In concluding Porter established prejudice, the Court
    reasoned that “[t]he judge and jury at Porter’s original
    sentencing heard almost nothing that would humanize Porter
    or allow them to accurately gauge his moral culpability.
    They learned about Porter’s turbulent relationship with [the
    victim], his crimes, and almost nothing else.” 
    Id. at 41
    . The
    Court emphasized the significance of Porter’s military
    service, both because “he served honorably under extreme
    hardship and gruesome conditions” and because “the jury
    might find mitigating the intense stress and mental and
    emotional toll that combat took on Porter.” 
    Id. at 43
    –44.
    A comparison of the failures by counsel in Williams,
    Wiggins, Rompilla, and Porter, with Washington’s situation
    confirms the adequacy of counsel’s representation of
    Washington and that Washington was not prejudiced by any
    alleged shortcoming on Clarke’s part. First, Porter is
    distinguishable because of the Court’s emphasis on the
    unique significance of military service in potentially
    mitigating against aggravating factors. See Porter, 
    558 U.S. at 43
     (“Our Nation has a long tradition of according leniency
    to veterans in recognition of their service, especially for
    those who fought on the front lines as Porter did.”).
    Likewise, Rompilla is distinguishable because there is no
    analog here to the “dispositive” failure of trial counsel in
    Rompilla to look at the records that prosecution had
    34                 WASHINGTON V. SHINN
    indicated would serve as the basis for its case for the death
    penalty.
    Second, although the evidence of Washington’s head
    injuries suggests a difficult childhood and perhaps might
    provide a more complete picture of his background than was
    presented at trial, that evidence is not nearly as substantial or
    extreme as the mitigating evidence in the four Supreme
    Court decisions. The possible head injuries and the
    suggested harsh discipline by Washington’s mother are not
    comparable to the outright beatings and criminal neglect of
    Williams’ parents, the starvation, neglect, physical abuse,
    molestation and rape, and gang-rape Wiggins suffered at the
    hands of his mother and foster families, Rompilla being
    locked up with his brother “in a small wire mesh dog pen
    that was filthy and excrement filled,” deprived of clothing,
    and beaten by his alcoholic father, or the other harrowing
    facts in those cases. See Rhoades v. Henry, 
    638 F.3d 1027
    ,
    1051 (9th Cir. 2011) (“Even the more complete picture
    portrayed in the proffer of Rhoades’s dysfunctional family
    with its alcoholism, abuse, aberrant sexual behavior, and
    criminal conduct does not depict a life history of Rhoades
    himself that is nightmarish as it was for the petitioners in
    cases such as Rompilla, Wiggins, and Williams . . . .”).
    Thus, even if Judge Bradshaw’s finding of no prejudice
    was not dispositive, we would nonetheless find that
    Washington has not met his burden of showing that his
    counsel’s failure to present additional evidence at sentencing
    was prejudicial.
    VI
    We are not insensitive to the fact that Washington is the
    only one of the three perpetrators who continues to face the
    death penalty. All three were initially sentenced to death.
    WASHINGTON V. SHINN                          35
    On appeal, the Arizona Supreme Court affirmed Washington
    and Robinson’s convictions and sentences, State v.
    Robinson, 
    796 P.2d 853
    , 865 (Ariz. 1990), but found
    insufficient evidence to convict James Mathers and vacated
    his conviction, State v. Mathers, 
    796 P.2d 866
     (Ariz. 1990).
    Even though the record suggests that Mathers was the
    shooter, and Judge Bradshaw thought that the evidence
    against Washington was no greater than the evidence against
    Mathers, Judge Bradshaw nonetheless denied Washington’s
    PCR petition.
    In 2010, in a split decision, we granted a writ of habeas
    corpus vacating the sentence of Washington’s co-defendant
    Fred Robinson in large part because he received ineffective
    assistance of counsel. Robinson v. Schriro, 
    595 F.3d 1086
    (9th Cir. 2010). 7 As noted, Washington and Robinson were
    tried and sentenced together, and their convictions and
    sentences were affirmed in state court following joint PCR
    proceedings, in nearly identical written orders. Like
    Washington, Robinson alleged that he received ineffective
    7
    Judge Rawlinson dissented. She concluded:
    The state post-conviction court fully considered the
    mitigation evidence presented by Robinson. Its
    subsequent emphatic ruling that the mitigation
    evidence would not have affected the sentence
    imposed compels a conclusion of no prejudice under
    the rationale of Van Hook and Wong. For that reason
    and because Robinson’s challenge to the cruelty prong
    of the statutory aggravating factors is procedurally
    barred, I respectfully dissent.
    
    595 F.3d at 1118
    –19. Robinson was resentenced to 67 years to
    life. Robinson has since passed away. Ariz. Dep’t of Corrections,
    Inmate Death Notification – Robinson (Mar. 7, 2016),
    https://corrections.az.gov/article/inmate-death-notification-robinson.
    36                 WASHINGTON V. SHINN
    assistance of counsel based on his trial counsel’s failure to
    present mitigation evidence at the penalty phase. 
    Id. at 1108
    –10. As he did with Washington, Judge Bradshaw
    concluded that the mitigation evidence Robinson produced
    in the state PCR proceeding would not have made a
    difference.
    However, the sharing of a procedural history does not
    make two cases analogous. Rather, the critical questions—
    whether counsel’s performance was constitutionally
    deficient and whether any deficiency resulted in prejudice—
    must be individually considered and separately considered
    in each case. See, e.g., Strickland, 
    466 U.S. at 705
     (Brennan,
    J. concurring in part and dissenting in part) (“In the
    sentencing phase of a capital case, ‘[w]hat is essential is that
    the jury have before it all possible relevant information about
    the individual whose fate it must determine.’”) (citing Jurek
    v. Texas, 
    428 U.S. 262
    , 276 (1976) (opinion of Stewart,
    Powell, and Stevens, J.J.). Indeed, Judge Bradshaw
    commented: “[h]owever one may view the reversal of
    Mathers’ conviction, it does not follow, either legally or
    logically, that this petitioner is entitled to the same treatment
    as his co-defendant, James Mathers. It most certainly does
    not mandate a change in his sentence.” He instructed the
    jury in Washington’s case at the trial court to “consider the
    charge against each defendant separately.” Thus, even
    though the record suggests that Robinson was the
    mastermind of the crime, in reviewing the Washington’s
    state conviction and sentence we are limited to considering
    the facts and legal arguments particular to his case.
    On the issues of attorney competence and prejudice, the
    facts of Robinson’s case differed starkly from the facts here.
    Robinson’s trial counsel “engaged in virtually no
    investigation” and “did not call a single witness or introduce
    WASHINGTON V. SHINN                      37
    any evidence” at the sentencing hearing. Robinson, 
    595 F.3d at 1109
    . In contrast, here, Clarke investigated potential
    mitigation evidence by having “very extensive” discussions
    with Washington about his background and by
    interviewing—both before trial and after the verdict—
    Washington’s mother, brother, and common-law wife.
    Clarke also called three witnesses, each of whom offered
    testimony supporting a cogent narrative that Washington
    was friendly yet gullible, non-violent, and a loving father
    (and son) and that he desired to make something of his life.
    In Robinson, the utter failure of Robinson’s counsel was
    critical. We based our finding of prejudice on counsel’s non-
    performance because, under Arizona’s death penalty statute
    at the time of sentencing, the “failure to present a mitigation
    defense all but assured the imposition of a death sentence.”
    Robinson, 
    595 F.3d at 1111
     (quoting Summerlin v. Schriro,
    
    427 F.3d 623
    , 640 (9th Cir. 2005)). We also distinguished
    two Supreme Court cases—Bobby v. Van Hook, 
    558 U.S. 4
    (2009) and Wong, 
    558 U.S. 15
     (2009)—on the basis that
    Robinson’s counsel failed to put on any mitigation evidence.
    Robinson, 
    595 F.3d at 1111 n.21
     (stating that in both Bobby
    and Wong “defense counsel presented a significant amount
    of mitigating evidence”). Here, Clarke presented substantial
    mitigating evidence and Washington has not shown that the
    evidence proffered in his PCR was likely to make a
    difference.
    VII
    Washington also argues that counsel was ineffective
    because he allowed the state court to require a nexus between
    his proffered mitigating evidence and the crime. A similar
    issue was raised in Robinson. The state had argued that the
    new evidence should be disregarded altogether because it
    lacked a “causal connection” to the crime. See 
    id. at 1111
    –
    38                WASHINGTON V. SHINN
    12. We rejected that argument based on Supreme Court
    precedent holding that evidence of a defendant’s background
    and mental capacity is relevant to mitigation and cannot be
    ruled inadmissible simply because the defendant fails to
    show a causal connection between the evidence and the
    crime. 
    Id. at 1112
    ; see Smith v. Texas, 
    543 U.S. 37
    , 45 (2004)
    (reaffirming the holdings of Eddings v. Oklahoma, 
    455 U.S. 104
     (1982), and Tennard v. Dretke, 
    542 U.S. 274
     (2004)).
    Washington argues that in his PCR proceeding the state
    court failed to consider his proffered mitigating evidence
    because of a lack of causal nexus. We do not agree. There
    is a critical difference between the admissibility of evidence
    and the weight given to that evidence. Although a court must
    allow a defendant to present any mitigation evidence, see
    Smith, 
    543 U.S. at 44
    –45, Eddings, 
    455 U.S. at 114,
     and
    Tennard, 
    542 U.S. at 284
    –85, “the failure to establish . . . a
    causal connection may be considered in assessing the quality
    and strength of the mitigation evidence,” State v. Newell,
    
    132 P.3d 833
    , 849 (Ariz. 2006). See McKinney v. Ryan,
    
    813 F.3d 798
    , 817–18 (9th Cir. 2015) (en banc) (referring to
    Newell’s rule as “proper[]”).
    In discussing Washington’s evidence of substance abuse,
    Judge Bradshaw concluded that the asserted drug and
    alcohol dependence did not affect Washington’s “ability to
    conform his actions to the demands of society.” This could
    be construed as echoing Arizona’s former improper causal
    nexus test. See McKinney, 813 F.3d at 810; Ariz. Rev. Stat.
    § 13-703(G)(1) (2008). Had Judge Bradshaw said nothing
    more, it might be inferred that he failed to consider
    Washington’s evidence for purposes of non-statutory
    mitigation. But Judge Bradshaw didn’t stop there; the very
    next sentence in his order shows that he in fact considered
    the evidence. He concluded that the evidence of substance
    WASHINGTON V. SHINN                         39
    abuse, considered alone or together with other mitigation
    evidence, would not “have mitigated against the sentence
    [Washington] has received.”
    The district court recognized that the state court properly
    considered Washington’s mitigating evidence.                  It
    commented that the state court “neither [mis]understood
    state law to preclude consideration of relevant proffered
    mitigation, nor to impose a minimum threshold before such
    mitigation could be considered.”          The district court
    understood Judge Bradshaw to have “considered the
    mitigation [evidence] proffered to show prejudice, but
    [Judge Bradshaw] determined that it carried insufficient
    weight to alter the sentence.”
    Thus, the conclusion that the evidence of substance
    abuse lacked a causal nexus to the crime was appropriate
    because “a court is free to assign less weight to mitigating
    factors that did not influence a defendant’s conduct at the
    time of the crime.” Hedlund v. Ryan, 
    854 F.3d 557
    , 587 n.23
    (9th Cir. 2017). The state court’s weighing of Washington’s
    evidence of substance abuse does not support his claims of
    ineffective assistance of counsel. 8
    VIII
    Washington and his two co-defendants were convicted
    and sentenced to death for the murder of Sterleen Hill and
    the attempted murder of Ralph Hill. Over the past 30 years,
    one of Washington’s co-defendants had his conviction
    overturned and the other had his capital sentence vacated
    8
    Washington’s able and zealous habeas counsel does not contend
    Judge Bradshaw committed an Eddings error as to the psychological
    evidence.
    40                 WASHINGTON V. SHINN
    (and has died). Under these circumstances, there may be a
    temptation to bend the governing legal standards to equalize
    the outcomes for the three defendants in an effort “to achieve
    what appears a just result.” Holland v. Florida, 
    560 U.S. 631
    , 673 (2010) (Scalia, J., dissenting). However enticing
    the impulse, that is not our role. Although Judge Bradshaw
    had the power to temper justice with mercy, in our role as a
    federal court on habeas review, we do not. Ours is the duty
    to determine whether Washington has met his high burden
    of showing pursuant to Strickland that his attorney
    performed deficiently to his prejudice. The Supreme Court
    reiterated in Harrington, 
    562 U.S. at 104,
     that to be entitled
    to relief, the petitioner “had to show both that his counsel
    provided deficient assistance and that there was prejudice as
    a result.” A failure to heed this standard would constitute
    “an improper intervention in state criminal processes,” and
    violate “the now well-settled meaning and function of
    habeas corpus in the federal system.”            
    Id. at 103
    .
    Accordingly, we may not ignore this exacting standard to
    “remedy” Judge Bradshaw’s choice against leniency.
    Rather, applying the familiar standard articulated in
    Strickland, we assess the state court record to determine
    whether Washington’s counsel was constitutionally
    deficient and whether the deficient performance resulted in
    prejudice. See Van Hook, 
    558 U.S. at 7
     (applying the
    Strickland analysis in a pre-AEDPA case). We conclude that
    Washington has not met his burden of showing that his
    counsel performed deficiently or that the alleged deficiency
    was prejudicial. He has not shown that the omission of the
    new mitigation evidence deprived him of “a fair trial,” see
    Strickland, 
    466 U.S. at 687,
     or that the omission undermines
    our confidence that the trial “produced a just result,” see 
    id. at 686
    .     Accordingly, the district court’s denial of
    Washington’s habeas petition is AFFIRMED.