Reynaldo Ayala v. Kevin Chappell ( 2016 )


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  •                  FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    REYNALDO MEDRANO                    No. 13-99005
    AYALA,
    Petitioner-Appellant,              D.C. No.
    3:01-cv-00741-BTM-MDD
    v.
    KEVIN CHAPPELL,                          OPINION
    Warden,
    Respondent-Appellee.
    Appeal from the United States District Court
    for the Southern District of California
    Barry Ted Moskowitz, Chief District Judge, Presiding
    Argued and Submitted December 10, 2015
    San Francisco, California
    Filed July 20, 2016
    Before: Alex Kozinski, Jay S. Bybee,
    and Morgan Christen, Circuit Judges.
    Opinion by Judge Christen
    2                      AYALA V. CHAPPELL
    SUMMARY*
    Habeas Corpus / Death Penalty
    The panel affirmed the district court’s denial of California
    state prisoner Reynaldo Medrano Ayala’s 
    28 U.S.C. § 2254
    habeas corpus petition challenging his conviction and death
    sentence for triple homicide.
    Ayala argued that his defense team was constitutionally
    ineffective because his lawyers failed to present evidence that
    would have called into question the credibility of two key
    prosecution witnesses. The panel agreed with the district
    court that the California Supreme Court reasonably deferred
    to defense counsel’s choices regarding exclusion of gang
    affiliation evidence. The panel held that defense counsel’s
    initial decision not to present an inmate’s testimony to
    impeach prosecution witness Juan Manuel Meza did not fall
    below an objective standard of reasonableness. The panel
    also agreed with the district court’s analysis of counsel’s
    decision not to reopen the defense case after witness Rafael
    Mendoza Lopez (“Rafa”) recanted his exonerating testimony.
    The panel explained that in light of the risks and difficulties
    presented by pivoting away from a “no-gang” strategy, the
    decision not to make such a dramatic transition did not fall
    below an objectively reasonable standard of care. The panel
    held that the California Supreme Court likewise did not
    unreasonably deny Ayala’s ineffective-assistance claims as
    they relate to calling “other witnesses,” whom Ayala admitted
    counsel believed were gang-affiliated. 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.
    AYALA V. CHAPPELL                         3
    the California Supreme Court reasonably rejected Ayala’s
    claim that counsel failed to independently investigate the
    gang affiliation of numerous witnesses before deciding not to
    call them. The panel explained that even if it reviewed this
    claim de novo, Ayala would not be eligible for relief.
    Agreeing with the district court that evidence Ayala first
    presented in the federal proceedings does not strengthen his
    ineffective-assistance claims, the panel declined to stay his
    federal case so that he can seek reconsideration of those
    claims in the California Supreme Court. The panel held that
    it was not unreasonable for the California Supreme Court to
    resolve his ineffective-assistance claims without first granting
    him an evidentiary hearing.
    The panel denied on the merits an uncertified and
    unexhausted claim under Brady v. Maryland that the state
    failed to disclose impeachment evidence about Meza, and
    denied as moot Ayala’s request for a certificate of
    appealability as to that claim. Because Ayala did not
    establish that the state suppressed the information that
    underpins his certified Brady claims relating to Meza, the
    panel held that the state court’s summary denial of them was
    not unreasonable. The panel held that the California Supreme
    Court’s application of Brady, in summarily denying Ayala’s
    claim that the state concealed evidence that Detective Carlos
    Chacon had a longstanding bias against Ayala and his
    brother, was reasonable.
    The panel held that the California Supreme Court’s
    rejection of Ayala’s witness intimidation claim – that Rafa
    recanted his exonerating testimony as a result of threats and
    intimidation by Detective Chacon – was not contrary to or an
    unreasonable application of Webb v. Texas. The panel held
    that the California Supreme Court did not misapply federal
    4                   AYALA V. CHAPPELL
    law when it rejected Ayala’s claim that the state violated
    Napue v. Illinois by failing to correct Rafa’s testimony that
    Detective Chacon did not threaten him.
    The panel held that the California Supreme Court’s
    rejection of Ayala’s claim that the trial court committed
    constitutional error when it refused to strike a juror for cause
    was not contrary to or an unreasonable application of Morgan
    v. Illinois. The panel could not say that the California
    Supreme Court’s denial of Ayala’s claim that the trial court
    violated his constitutional right to present a defense when it
    excluded under California hearsay rules the exculpatory
    statements of a deceased witness was an unreasonable
    application of Chambers v. Mississippi. The panel held that
    the California Supreme Court’s rejection of Ayala’s claim of
    prosecutorial misconduct during closing argument was not an
    unreasonable application of Darden v. Wainwright, and that
    the rejection of Ayala’s related ineffective-assistance claim
    was likewise not unreasonable. The panel held that Ayala’s
    inability to show prejudice is fatal to his due-process
    challenge to the penalty-phase admission of evidence that
    nearly ten years before trial Ayala murdered a fellow inmate.
    The panel held that Ayala has not suffered the prejudice
    that would rise to the level of a constitutional violation based
    on cumulative error.
    The panel held that Ayala does not meet the high
    threshold of proof that would be required to support a
    freestanding claim, if cognizable on federal habeas review, of
    actual innocence.
    AYALA V. CHAPPELL                       5
    COUNSEL
    D. Jay Ritt (argued), Ritt, Tai, Thvedt & Hodges, Pasadena,
    California; Michael R. Belter (argued), Law Offices of
    Michael R. Belter, Pasadena, California; for Petitioner-
    Appellant.
    Michael T. Murphy (argued) and Robin Urbanski, Deputy
    Attorneys General; Holly D. Wilkins, Supervising Deputy
    Attorney General; Julie L. Garland, Senior Assistant Attorney
    General; Gerald A. Engler, Chief Assistant Attorney General;
    Kamala D. Harris, Attorney General; Office of the Attorney
    General, San Diego, California; for Respondent-Appellee.
    OPINION
    CHRISTEN, Circuit Judge:
    Reynaldo Medrano Ayala appeals from the district court’s
    denial of his petition for a writ of habeas corpus under
    
    28 U.S.C. § 2254
    . Ayala was convicted of triple homicide in
    1988, and he is currently on death row in California. He
    argues that his trial was fundamentally unfair, and federal
    habeas relief is therefore warranted, primarily because his
    lawyer unreasonably failed to impeach the prosecution’s key
    witnesses with evidence that would have undermined their
    credibility. Ayala also claims that the State concealed
    evidence in violation of Brady v. Maryland, 
    373 U.S. 83
    (1963), that a San Diego police officer threatened and
    intimidated witnesses, and that the trial court committed
    several constitutional errors. Because we conclude the
    California Supreme Court’s resolution of Ayala’s claims was
    not contrary to clearly established federal law, we affirm the
    6                           AYALA V. CHAPPELL
    district court’s denial of the petition for writ of habeas
    corpus.1
    BACKGROUND
    I. Facts
    On April 26, 1985, Jose Rositas, Marcos Zamora, and
    Ernesto Dominguez Mendez (“Dominguez”) were murdered
    execution-style in an auto body shop located on 43rd Street
    in San Diego, California.2 People v. Ayala, 
    1 P.3d 3
    , 11–12
    (Cal. 2000). Pedro “Pete” Castillo was shot at the same time,
    but not fatally. He claimed to have been an intended fourth
    victim who got away. The 43rd Street body shop was a hub
    for drug distribution, and Dominguez—the owner of the
    shop—was an active heroin distributor who may have had
    connections with heroin suppliers in Mexico. According to
    Castillo, the 43rd Street murders were a drug robbery gone
    wrong.
    The murders occurred around 8 p.m. Within a few hours,
    San Diego gang intelligence detective Carlos Chacon urged
    his counterparts in the San Diego homicide unit to investigate
    brothers Hector and Reynaldo Ayala and their associate Juan
    Manuel Meza as potential suspects.3 Two days later, Pete
    1
    Ayala did not raise a Batson v. Kentucky, 
    476 U.S. 79
     (1986), claim,
    but another defendant, Ayala’s brother Hector, did. Hector and Ayala
    were tried separately. Hector’s Batson challenge is the subject of Davis
    v. Ayala, 
    135 S. Ct. 2187
     (2015).
    2
    We refer to this crime as the “43rd Street murders.”
    3
    We refer to Hector Ayala as “Hector,” and his brother, petitioner
    Reynaldo Ayala, as “Ayala.”
    AYALA V. CHAPPELL                       7
    Castillo identified Ayala, Hector, and Joe Moreno as the
    perpetrators of the triple homicide. Id. at 14.
    Ayala was arrested in June of 1985 and charged with
    three counts of murder, one count of attempted murder, one
    count of robbery, and three counts of attempted robbery. See
    
    Cal. Penal Code §§ 187
     (murder), 664 (attempt), 211
    (robbery). Hector and Joe Moreno were arrested and charged
    around the same time.
    In February 1987, San Diego police officers arrested Juan
    Manuel Meza for drug distribution. Meza pleaded guilty to
    possession of cocaine several weeks after his arrest and
    entered into a plea agreement that provided he would serve
    four years in prison. Detective Chacon, who knew Meza
    from childhood, visited Meza in jail several times during the
    spring of 1987. Meza admitted to Chacon that he helped the
    Ayalas plan the 43rd Street murders, even though he
    ultimately did not participate. Meza met with the district
    attorneys involved in Ayala’s case in April or May 1987 and
    agreed to testify against Ayala, Hector, and Moreno. In the
    summer of 1987, a district attorney appeared at Meza’s
    sentencing on the drug possession charge. The D.A. asked
    the judge to sentence Meza pursuant to 
    Cal. Penal Code § 1170
    (d) so he could “recall the sentence and commitment
    previously ordered and resentence the defendant” if Meza
    testified in court proceedings relating to the 43rd Street
    murders. 
    Cal. Penal Code § 1170
    (d)(1).
    A. Gang affiliation evidence
    Ayala and Hector were believed to be members of the
    Mexican Mafia—or EME—a prison gang with an active
    street program that operated throughout southern California,
    8                    AYALA V. CHAPPELL
    but all parties agreed that the 43rd Street murders were not
    gang related. Ayala’s lawyers filed a pretrial motion in
    limine in which they argued that mention of the Mexican
    Mafia or Ayala’s gang affiliation at trial would be unduly
    prejudicial and of questionable relevance to the case.
    The state trial judge was initially disinclined to rule on the
    motion. He agreed with the prosecution that it would be
    difficult to rule on the admissibility of gang affiliation
    evidence before hearing each witness’s testimony. The
    defense team pursued this pre-trial ruling for months,
    persistently arguing that, without a ruling, they would not be
    able to “strategize [and] determine what course of action to
    take with regard to jury selection and cross-examination.”
    The judge ultimately relented and ruled as follows:
    [G]ang affiliation has nothing to do with
    motive in terms of this particular case, so
    there will be no testimony concerning motive
    dealing with the Mexican Mafia. We know
    that that’s not the case.
    Gang affiliation has nothing to do with the
    identity issue that’s presented, so there will be
    no Mexican Mafia testimony concerning gang
    affiliation.
    ...
    Let me indicate this: That with reference to
    credibility, the court’s going to require a 403
    hearing if, in fact, we’re going to have to get
    into this, the people see that after cross-
    AYALA V. CHAPPELL                                9
    examination. We’ll deal with that on each
    witness.
    If, in fact, the people perceive a need to deal
    with the credibility issue, then I’m going to do
    it at side-bar before it goes in front of the jury.
    I’m going to further request that the people
    admonish their witnesses not to voluntarily
    mention any gang affiliation, that each
    witness be admonished on that point. . . .
    They will be admonished on direct.
    The trial judge also said he would instruct witnesses not to
    mention gangs in their cross-examination testimony, but “if
    the question calls for that response, then so be it.” As the trial
    progressed, the court ruled that each witness could mention
    “group” or “association” if necessary, but not “EME” or
    “Mexican Mafia.”
    B. The State’s case
    Ayala’s trial began in August 1988 and lasted two
    months.4 “The prosecution theorized that the murders
    resulted from a robbery attempt that failed because it was
    based on the perpetrators’ incorrect speculation that
    Dominguez had just returned from Mexico with a quantity of
    narcotics or cash.” Ayala, 
    1 P.3d at 12
    . The State presented
    4
    Although some of Ayala’s pre-trial proceedings were consolidated with
    those of his brother, the two were tried separately. Ayala was tried first.
    Hector was tried second and was convicted. Moreno’s trial took place
    after both Ayala’s trial and Hector’s trial, and he was acquitted on all
    counts.
    10                  AYALA V. CHAPPELL
    minimal physical evidence linking Ayala to the crimes and
    instead built its case around the testimony of Pete Castillo
    and Juan Manuel Meza.
    Castillo testified that Dominguez and Zamora sold heroin
    from the shop and that he was also involved in the heroin
    distribution operation. He described how Ayala and Hector
    frequented the shop to use and acquire heroin, and told the
    jury that he saw Ayala, Hector, and Joe Moreno outside of the
    body shop on the day of the murders, April 26, 1985. 
    Id. at 13
    . At dusk, Castillo looked up from his work on a car and
    saw Hector pointing a pistol at his head. 
    Id.
     Hector led
    Castillo into the shop where Dominguez, Zamora, and Rositas
    were bound by duct tape. 
    Id.
     Castillo testified that Ayala
    demanded $10,000 from the victims, “or someone was going
    to die.” 
    Id. at 14
    . Castillo volunteered that he had some
    money in his truck, and Ayala agreed to lead him there.
    Castillo used this opportunity to escape. He lifted the large
    shop door, slid under it, and let it slam down behind him. As
    he ran into the street, someone, likely Ayala or Moreno, fired
    shots at him, and Castillo was wounded in the back. Castillo
    fell onto 43rd Street, where police officers found him and
    rushed him to the hospital. 
    Id.
    Castillo did not immediately identify the Ayalas or Joe
    Moreno as the perpetrators of the crime. Rather, “while in
    the ambulance on the way to the hospital, [he] said he did not
    know the killers [but] that one of them was wearing a red
    plaid shirt.” 
    Id. at 15
    . The next day at the hospital, Castillo
    repeated “that one of the killers was wearing a red Pendleton
    shirt” when he was interviewed by a detective. 
    Id.
     But the
    day after that, Castillo identified the Ayalas and Joe Moreno
    as the killers and also picked them out of a photo array. 
    Id. at 14
    .
    AYALA V. CHAPPELL                       11
    In addition to providing an eyewitness account of the
    crimes, Castillo’s testimony corroborated the prosecution’s
    theory of the case: He told the jury that Hector inquired
    about Dominguez’s whereabouts roughly a week before the
    murders when Dominguez was in jail for minor offenses. 
    Id. at 12
    . Pursuant to Dominguez’s request, Castillo told Hector
    that Dominguez was in Mexico rather than revealing that he
    was in jail. 
    Id.
    Juan Meza was also an important witness for the State
    because he testified that he helped plan the murders before
    backing out on the day of the crime. Meza told the jury that
    he and Hector went to the body shop to acquire drugs more
    than ten times between January and April 1985. He
    explained that about three weeks before the murders, the
    Ayala brothers became angry with Dominguez over a drug
    transaction, and Ayala proposed robbing and killing
    Dominguez and some of the people who worked with him.
    Meza testified that in the weeks before the murder, he and the
    Ayalas talked about Dominguez’s trip to Tijuana to buy a
    large amount of drugs, tying the victims, and the types of
    guns they would use to commit the crime. Meza also
    described how, about a week before the murders, Hector
    recruited Joe Moreno to serve as the getaway driver. Meza
    testified that he went along with the Ayalas’ plan but he never
    intended to participate in the murders because he feared the
    Ayalas would use the crime as an opportunity to kill him.
    According to Meza, Hector told him to be ready to be picked
    up on April 26 between 5 and 6 p.m., but Meza avoided his
    home at the appointed time.
    12                    AYALA V. CHAPPELL
    C. The defense
    The defense presented evidence that “Castillo was in
    league with the probable actual killers: two young Latino
    men, one of whom was wearing a red plaid shirt of the
    Pendleton brand or type.” 
    Id. at 15
    . The defense also
    focused on raising reasonable doubt by discrediting the
    State’s primary witnesses.
    Ayala’s trial counsel offered the testimony of Traci
    Pittman in support of the defense’s alternative-assailant
    theory. Pittman testified that on the night of the murders she
    was at a liquor store across 43rd Street and a young Mexican
    man wearing a Pendleton-type shirt walked past her. 
    Id.
     She
    thought he was concealing something that could have been a
    gun. 
    Id.
     Pittman said the Mexican man was joined by a
    second Mexican-looking man, and the two disappeared into
    the complex containing the body shop. 
    Id.
     Two minutes
    later, Pittman heard gunshots, saw a man—presumably
    Castillo—running from the body shop, and then heard several
    more shots. 
    Id.
     At trial, defense counsel asked Pittman
    whether Ayala was one of the men she saw the night of the
    murder, and Pittman answered “no.” Pittman’s testimony
    corroborated Castillo’s initial identification of the killer as
    someone (not Hector or Reynaldo Ayala) who was wearing
    a red, Pendleton-style shirt.
    The defense also called Rafael Mendoza Lopez (“Rafa”)
    as a witness. Rafa was a long-time friend of Dominguez who
    frequented the body shop to purchase drugs. 
    Id.
     at 15–16.
    On direct examination, Rafa testified that he went to the body
    shop on the day of the murders to get heroin from Castillo,
    and he saw several strangers whom he perceived to be from
    Mexico. Rafa testified that he did not see the Ayalas at the
    AYALA V. CHAPPELL                      13
    shop that day. Rafa described standing next to Castillo when
    Castillo opened the trunk of a car and took out two guns that
    were buried in a pile of dirty clothes. Rafa recalled Castillo
    telling him “that he was waiting for some people from
    Mexico.”
    The defense endeavored to weaken the State’s case by
    impeaching its primary witnesses, Castillo and Meza.
    Counsel cross-examined Castillo about his role in the body
    shop’s drug distribution business and false statements he
    made during the preliminary hearing in which he denied any
    knowledge of drug-related activity at the body shop. 
    Id.
     at
    14–15. The defense emphasized that Castillo did not initially
    identify Ayala as the killer, but rather said the killer was a
    stranger “wearing a red Pendleton shirt.” 
    Id. at 15
    . Counsel
    impeached Meza with the fact that he was testifying in the
    hope of getting his sentence reduced, inconsistencies in his
    story, that it took more than a year for him to come forward,
    meetings he had with Chacon before deciding to testify, and
    a statement he made to his parole officer in which he
    admitted he had a propensity for lying.
    D. The State’s rebuttal
    Rafa dramatically recanted his testimony in the
    prosecution’s rebuttal. Called back to the witness stand, he
    told the jury that he invented the story about Castillo taking
    guns from the trunk of a car and commenting about waiting
    for people “from Mexico.” He also admitted, contrary to his
    earlier account, that he did see the Ayalas at the body shop
    late in the afternoon on the day of the murders.
    When asked why he lied on Ayala’s behalf, Rafa testified
    that he did it because Ayala asked him to, and because he was
    14                   AYALA V. CHAPPELL
    afraid that if he refused to help the Ayalas, he “might, you
    know, get killed or something.” According to Rafa, Ayala
    asked him to testify falsely for the defense at a jailhouse visit
    that occurred shortly after Ayala’s arrest in the summer of
    1985. Rafa explained that Ayala pressed a piece of paper
    against the visiting room glass separator. A handwritten note
    on the paper instructed Rafa to get in touch with a defense
    investigator and tell him “that [the Ayalas] weren’t [at the
    shop] on that date, make it seem like it was some Mexicans
    from across the border that Pete [Castillo] had hired to come
    and do the hit.” Rafa testified that the note described the
    guns Rafa should connect with Castillo and said: “[w]hat
    happened to Chacho [Dominguez] had to happen.”
    Lead defense counsel vigorously cross-examined Rafa
    about his flip-flopped testimony. Counsel questioned the
    plausibility of Rafa’s meeting with Ayala, including how
    Ayala could write such intricate directions on a piece of paper
    small enough to avoid detection by prison guards. 
    Id. at 16
    .
    She also introduced evidence that cast doubt on the credibility
    of Rafa’s recantation. 
    Id.
     In particular, though Rafa testified
    that a person with the nickname “Rudy Green Eyes” Ybarra
    accompanied him on the visit to see Ayala in jail, counsel
    showed that “Rudy Green Eyes” was incarcerated at that
    time. 
    Id.
    Defense counsel also explored a meeting Rafa had with
    Detective Chacon during which, counsel believed, Chacon
    coerced Rafa into recanting. Chacon visited Rafa shortly
    after Rafa testified for the defense, when Rafa was in a
    holding cell awaiting transport back to prison. During this
    visit, Chacon accused Rafa of perjuring himself to get into the
    good graces of the prison’s “Southern” group, with which
    Ayala was affiliated. Chacon told Rafa he believed this effort
    AYALA V. CHAPPELL                        15
    failed and that Rafa would face danger from both the
    “Southern” group and a rival “Northern” group once he
    returned to prison. Rafa admitted that Chacon discussed
    protecting him against these groups, and defense counsel
    accused Rafa of trading his testimony for the relative safety
    Chacon promised. On redirect, Rafa confirmed that he feared
    the “Southern” and “Northern” groups and believed Ayala
    had “influence over what other people in this Southern group
    might do,” but he denied that Chacon frightened him into
    recanting his testimony. Rafa maintained that he willingly
    told Chacon the truth because he was angry that people
    affiliated with Ayala “show[ed him] no kind of respect” even
    after he promised to lie on Ayala’s behalf.
    E. Detective Carlos Chacon
    Detective Carlos Chacon testified only briefly at trial, but
    Ayala argues that Chacon played a significant behind-the-
    scenes role in this case. Chacon was a San Diego gang
    intelligence officer whose regular duties required that he
    gather intelligence about prison gangs operating in southern
    California, including the Mexican Mafia. Chacon had pre-
    trial contact with several of the witnesses in Ayala’s trial.
    In addition to meeting with Rafa just before he agreed to
    recant the testimony he gave on Ayala’s behalf, Chacon
    visited Juan Meza after Meza’s February 1987 drug arrest,
    and the two discussed the 43rd Street murders. Meza was a
    Mexican Mafia affiliate who spent much of the decade
    between 1975 and 1985 in prison. Chacon was well
    acquainted with Meza because the two grew up in the same
    neighborhood. Chacon frequently visited Meza in jail to
    elicit information about gangs. Several weeks after one such
    visit, Meza admitted to his involvement in planning the 43rd
    16                    AYALA V. CHAPPELL
    Street murders, and several months after that, he agreed to
    testify against the Ayalas.
    F. The verdict
    After deliberating for less than a week, the jury found
    Ayala guilty of all charges. 
    Id. at 11
    . The trial court
    sentenced him to death in early January 1989, and Ayala
    appealed.
    Ayala filed a state habeas corpus petition in the California
    Supreme Court while his direct appeal was pending. The
    petition raised several claims for relief and requested an
    evidentiary hearing. The California Supreme Court decided
    Ayala’s direct appeal in June 2000, affirming Ayala’s
    conviction and sentence in a reasoned opinion. See 
    id. at 52
    .
    The California Supreme Court summarily denied Ayala’s
    habeas corpus petition on the same day. Ayala’s conviction
    became final on March 5, 2001, when the United States
    Supreme Court denied his petition for writ of certiorari. See
    Ayala v. California, 
    532 U.S. 908
     (2001) (mem.).
    II. Procedural history
    Ayala timely filed a federal habeas corpus petition in the
    Southern District of California. Shortly thereafter, the district
    court stayed the federal proceedings so Ayala could return to
    state court and exhaust several of his claims.
    Ayala filed his first amended petition for writ of habeas
    corpus (henceforth, “Exhaustion Petition”) in the California
    Supreme Court in September 2002. He filed two exhibits
    with his Exhaustion Petition: (1) a declaration by defense
    investigator Eric Hart; and (2) a declaration by Strickland
    AYALA V. CHAPPELL                         17
    expert Steven L. Harmon. He also requested an evidentiary
    hearing. The California Supreme Court summarily denied
    each of Ayala’s claims on the merits the following year.
    “[S]eperately and independently,” the court found many of
    Ayala’s claims to be procedurally barred as untimely.
    Ayala then filed a first amended petition for writ of
    habeas corpus in federal district court in which he asserted
    seventy-five claims for relief. Between February 2008 and
    June 2009, the district court issued three orders resolving
    cross-motions for summary judgment on most of Ayala’s
    claims. The court decided that some of Ayala’s ineffective
    assistance of counsel and witness intimidation claims were
    potentially meritorious, and it granted Ayala’s request for an
    evidentiary hearing on them.5
    The district court’s evidentiary hearing on Ayala’s
    ineffective assistance of counsel and witness intimidation
    claims spanned twenty court days over a period of nine
    months in 2010. The district court took testimony from about
    twenty witnesses, and the parties introduced nearly 120
    exhibits. Following this hearing, Ayala filed a third amended
    habeas corpus petition for the sole purpose of adding a new
    claim, the seventy-sixth, based on testimony adduced at the
    hearing.
    On March 28, 2013, the district court issued a lengthy,
    well-reasoned order granting the State’s motion for summary
    judgment on Ayala’s remaining exhausted claims. See Ayala
    v. Chappell, No. 01CV0741-BTM (MDD), 
    2013 WL 1315127
     (S.D. Cal. Mar. 28, 2013). In a separate order, it
    granted the State’s motion for summary judgment, and denied
    5
    The hearing covered claims 4, 5, 8, 12, 18, 19, 20, and 24.
    18                  AYALA V. CHAPPELL
    Ayala’s request for a certificate of appealability (COA), on
    Ayala’s unexhausted seventy-sixth claim. The court issued
    a final judgment and granted a COA on twenty-six claims,
    including sixteen of the seventeen claims raised here. Ayala
    timely filed a notice of appeal. We have jurisdiction under
    
    28 U.S.C. § 1291
    .
    LEGAL STANDARDS
    We review de novo the district court’s denial of Ayala’s
    habeas corpus petition. Hurles v. Ryan, 
    752 F.3d 768
    , 777
    (9th Cir. 2014).
    The Antiterrorism and Effective Death Penalty Act of
    1996 (AEDPA) governs Ayala’s petition because he filed it
    after 1996. AEDPA substantially limits the power of federal
    courts to grant habeas relief to state prisoners. See 
    id.
     Under
    AEDPA, a federal court may not grant a prisoner’s petition
    on a claim that was decided on the merits in state court unless
    the state court’s adjudication of the claim:
    (1) resulted in a decision that was contrary to,
    or involved an unreasonable 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); see also Glebe v. Frost, 
    135 S. Ct. 429
    ,
    430 (2014).
    AYALA V. CHAPPELL                       19
    “‘[C]learly established Federal law’ . . . is the governing
    legal principle or principles set forth by the Supreme Court
    [in its holdings] at the time the state court renders its
    decision.” Lockyer v. Andrade, 
    538 U.S. 63
    , 71–72 (2003).
    A state court’s decision is contrary to clearly established
    federal law “if the state court applies a rule that contradicts
    the governing law set forth in [the Supreme Court’s] cases”
    or “confronts a set of facts that are materially
    indistinguishable from a decision of [the] Court and
    nevertheless arrives at a result different from [Supreme
    Court] precedent.” Williams v. Taylor, 
    529 U.S. 362
    , 405–06
    (2000). A state court’s decision is an unreasonable
    application of clearly established federal law if it “correctly
    identifies the governing legal rule but applies it unreasonably
    to the facts of a particular prisoner’s case.” 
    Id.
     at 407–08. A
    state court’s factual findings are unreasonable if “reasonable
    minds reviewing the record” could not agree with them.
    Brumfield v. Cain, 
    135 S. Ct. 2269
    , 2277 (2015) (alteration
    omitted) (quoting Wood v. Allen, 
    558 U.S. 290
    , 301 (2010)).
    In any case, “[f]or relief to be granted, a state court merits
    ruling must be ‘so lacking in justification that there was an
    error . . . beyond any possibility for fairminded
    disagreement.’” Bemore v. Chappell, 
    788 F.3d 1151
    , 1160
    (9th Cir. 2015) (quoting Harrington v. Richter, 
    562 U.S. 86
    ,
    103 (2011)).
    When considering whether a state court’s decision was
    unreasonable under § 2254(d)(1), we may consider only “the
    record that was before the state court that adjudicated the
    claim on the merits.” Cullen v. Pinholster, 
    563 U.S. 170
    , 181
    20                      AYALA V. CHAPPELL
    (2011).6 But if we determine “the petitioner has satisfied
    § 2254(d)” based only on the evidence that was before the
    state court, “we evaluate the claim de novo, and we may
    consider evidence properly presented for the first time in
    federal court.” Crittenden v. Chappell, 
    804 F.3d 998
    , 1010
    (9th Cir. 2015) (quoting Hurles v. Ryan, 
    752 F.3d 768
    , 778
    (9th Cir. 2014)).
    We apply AEDPA’s standards to the state court’s last
    reasoned decision on the merits of a petitioner’s claims.
    Edwards v. Lamarque, 
    475 F.3d 1121
    , 1126 (9th Cir. 2007)
    (en banc). The California Supreme Court decided seven of
    the claims at issue here in its reasoned decision on direct
    review. See Ayala, 
    1 P.3d at
    17–42, 48–52. Ayala raised the
    remaining claims in his Exhaustion Petition, so the only
    merits decision on those claims is the California Supreme
    Court’s September 2003 summary denial. See Harrington,
    
    562 U.S. at 98
     (holding that a summary denial from the
    California Supreme Court is an “adjudicat[ion] on the merits”
    under AEDPA). For claims that the California Supreme
    Court decided on direct appeal, “we apply AEDPA deference
    to the state court’s analysis.” Bemore, 788 F.3d at 1161. For
    claims that the California court addressed only in its summary
    denial, “we conduct an independent review of the record to
    ‘determine what arguments or theories . . . could have
    supported [] the state court’s decision.’” Id. (quoting
    Harrington, 
    562 U.S. at 102
    ) (alterations in original); see also
    Cannedy v. Adams, 
    706 F.3d 1148
    , 1157–59 (9th Cir. 2013)
    (for claims addressed both in a summary denial and a
    6
    The Supreme Court issued its decision in Pinholster after the district
    court completed the 2010 evidentiary hearing in Ayala’s case but before
    it issued its final summary judgment order.
    AYALA V. CHAPPELL                       21
    reasoned opinion, we “look through” the summary denial to
    review the reasoned decision).
    DISCUSSION
    I. Procedural bar
    We first address the State’s threshold argument that the
    procedural bar doctrine prevents us from reaching the merits
    on several of Ayala’s claims. The procedural bar doctrine
    prohibits a federal court from granting relief on the merits of
    a state prisoner’s federal claim when the state court denied
    the claim based on an independent and adequate state
    procedural rule. Coleman v. Thompson, 
    501 U.S. 722
    ,
    729–30 (1991). The doctrine is implicated where, as here, the
    state court’s “reliance upon [the state’s] procedural bar rule
    was an independent and alternative basis for its denial of the
    petition.” Loveland v. Hatcher, 
    231 F.3d 640
    , 643 (9th Cir.
    2000). Even if the procedural bar doctrine otherwise
    precludes relief on a prisoner’s claim, he or she “may obtain
    federal review of [that] claim by showing cause for the
    default and prejudice from a violation of federal law.”
    Martinez v. Ryan, 
    132 S. Ct. 1309
    , 1316 (2012).
    In its 2003 summary denial of Ayala’s Exhaustion
    Petition, the California Supreme Court ruled that many of the
    seventy-five claims included in the petition were
    “procedurally barred . . . as untimely” in addition to denying
    them on the merits. See In re Clark, 
    855 P.2d 729
    , 737–62
    (Cal. 1993). The State argued before the district court that
    the procedural bar doctrine prevented the court from granting
    22                       AYALA V. CHAPPELL
    relief on claims the California court dismissed as untimely.7
    The district court rejected the State’s procedural bar
    arguments after concluding that “the procedural rules in
    question are [not] sufficient to prohibit the consideration of
    these claims on the merits.” After the district court issued
    this ruling and held an evidentiary hearing on the merits of
    Ayala’s petition, the Supreme Court decided Walker v.
    Martin, 
    562 U.S. 307
     (2011). Walker holds that California’s
    timeliness rule is an independent and adequate state law
    ground sufficient to bar federal habeas relief on untimely
    claims. See 
    id. at 310, 315
    , 317 (citing In re Clark, 
    855 P.2d at
    738 & n.5). Citing Walker, the State raised the procedural
    bar doctrine in its final summary judgment briefing to the
    district court.
    The district court still declined to resolve Ayala’s federal
    petition on procedural grounds. Having concluded the 20-day
    evidentiary hearing and foregone defense counsel’s offer to
    brief cause and prejudice, the court reasoned that “deciding
    the merits of [each] claim will prove to be less complicated
    and time-consuming than adjudicating the issue of procedural
    default.” The district court relied on our decision in Franklin
    v. Johnson, 
    290 F.3d 1223
     (9th Cir. 2002), to reach the merits
    of Ayala’s claims. 
    Id. at 1232
     (“[C]ourts are empowered to,
    7
    The California court also rejected many claims as successive and/or
    repetitive of issues previously raised, but before our court, the State asserts
    procedural bars based only on timeliness grounds, and only as to claims
    1, 4, 6, 12, 18, and 20. Any argument that additional claims are
    procedurally barred because they were successive, repetitive, or untimely
    is therefore waived. See Slovik v. Yates, 
    556 F.3d 747
    , 751 n.4 (9th Cir.
    2009) (declining to reach a procedural bar argument the state raised for the
    first time in a petition for rehearing); Vang v. Nevada, 
    329 F.3d 1069
    ,
    1073 (9th Cir. 2003) (noting that procedural bar is subject to waiver by the
    state).
    AYALA V. CHAPPELL                    23
    and in some cases should, reach the merits of habeas petitions
    if they are . . . clearly not meritorious despite an asserted
    procedural bar.”).
    The State renews its procedural bar argument here, and
    we follow the same tack as the district court. The State is
    correct that Walker precludes relief on several of Ayala’s
    claims unless Ayala demonstrates cause and prejudice for his
    procedural default, see Walker, 
    562 U.S. at 316
    , but the
    parties did not develop a record on cause and prejudice. See,
    e.g., Loveland, 
    231 F.3d at
    644–45 (remanding for the district
    court to hold an evidentiary hearing on cause and prejudice).
    Thus, in keeping with Franklin’s admonishment that where
    claims are “clearly not meritorious,” “appeals courts are
    empowered to, and in some cases should, reach the merits of
    habeas petitions . . . despite an asserted procedural bar,”
    
    290 F.3d at 1232
    , we proceed to evaluate Ayala’s claims on
    the merits.
    II. Ineffective assistance of counsel
    Ayala first argues that his defense team was
    constitutionally ineffective because his lawyers failed to
    present evidence that would have called into question the
    credibility of key prosecution witnesses Meza and Castillo.8
    More specifically, Ayala claims trial counsel unreasonably
    declined to call witnesses: (1) Richard Savocchio and Raul
    Garcia, who would have testified that Meza invented his story
    about the Ayalas’ participation in the 43rd Street murders to
    obtain a reduction in his own custodial time, and (2) Johnny
    Mendez and Luis Garcia, who would have testified that
    8
    Ayala draws this argument from claims 18, 19, and 20.
    24                  AYALA V. CHAPPELL
    Castillo “had, prior to the murders, solicited [them] to kill
    victim Zamora.”
    “The clearly established federal law for ineffective
    assistance of counsel [“IAC”] claims, as determined by the
    Supreme Court, is Strickland v. Washington, 
    466 U.S. 668
    (1984) . . . .” Andrews v. Davis, 
    798 F.3d 759
    , 774 (9th Cir.
    2015). To prevail on an IAC claim, a defendant must
    establish that his counsel’s performance was constitutionally
    deficient, and that “the deficient performance prejudiced the
    defense.” Strickland, 
    466 U.S. at 687
    . Strickland’s “deficient
    performance” prong requires a defendant to show “that
    counsel’s representation fell below an objective standard of
    reasonableness” such that “counsel was not functioning as the
    ‘counsel’ guaranteed the defendant by the Sixth
    Amendment.” 
    Id.
     at 687–88. In evaluating a lawyer’s
    performance, “a court must indulge a strong presumption that
    counsel’s conduct falls within the wide range of reasonable
    professional assistance; that is, the defendant must overcome
    the presumption that, under the circumstances, the challenged
    action ‘might be considered sound trial strategy.’” 
    Id. at 689
    (quoting Michel v. Louisiana, 
    350 U.S. 91
    , 101 (1955)).
    Strickland’s “prejudice” prong requires a defendant to show
    “there is 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
    .
    “Under the AEDPA, the primary issue is whether the state
    court adjudication of the Strickland claim[] was objectively
    reasonable.” Woods v. Sinclair, 
    764 F.3d 1109
    , 1131 (9th
    Cir. 2014). “The standards created by Strickland and
    § 2254(d) are both ‘highly deferential,’ and when the two
    AYALA V. CHAPPELL                         25
    apply in tandem, review is ‘doubly’ so.” Harrington,
    
    562 U.S. at 105
     (citations omitted). Thus, even if we would
    find, on de novo review, that petitioner can satisfy both
    Strickland prongs, “AEDPA requires that a federal court find
    the state court’s contrary conclusions . . . objectively
    unreasonable before granting habeas relief.” Woods,
    764 F.3d at 1132.
    A. The defense team’s“no-gang” approach
    Long before trial started, Ayala’s defense team decided
    on a plan to insulate the jury from hearing evidence that
    Ayala was affiliated with the Mexican Mafia. This plan
    informed defense counsels’ decisions not to present the
    testimony of several impeachment witnesses whom they
    believed were affiliated with prison gangs. Ayala now argues
    that his lawyers’ decisions not to call these witnesses
    amounted to deficient performance under Strickland, and that
    the California Supreme Court’s denial of this IAC claim was
    unreasonable. We analyze this argument by considering first
    whether the California Supreme Court reasonably applied
    Strickland’s deferential standard when it upheld the defense’s
    “no-gang” trial plan, and then whether the defense team’s
    decision not to call individual witnesses was consistent with
    the plan.
    The California court did not evaluate counsels’ overall
    “no-gang” plan in a reasoned decision, so we “determine
    what arguments or theories . . . could have supported[] the
    state court’s decision[] and then . . . ask whether it is possible
    fairminded jurists could disagree that those arguments or
    theories are inconsistent with the holding in a prior decision
    of” the Supreme Court. Harrington, 
    562 U.S. at 102
    . We
    conclude that the California Supreme Court reasonably
    26                      AYALA V. CHAPPELL
    deferred to defense counsels’ choices regarding exclusion of
    gang affiliation evidence.
    The record leaves no doubt that counsels’ effort to avoid
    mention of the Mexican Mafia or EME at trial was a carefully
    considered, deliberately undertaken strategy, the likes of
    which we cannot second-guess on federal habeas review. In
    People v. Cardenas, 
    647 P.2d 569
     (Cal. 1982), the California
    Supreme Court recognized that gang affiliation evidence is
    prejudicial because it invites a jury to find a defendant guilty
    by association. 
    Id. at 572
    . Ayala’s lawyers cited Cardenas’s
    progeny in their motion in limine to exclude gang affiliation
    evidence, where they argued that mention of the Mexican
    Mafia would unduly prejudice Ayala.9 They attached to their
    motion dozens of newspaper articles documenting the
    prevalence of gang violence in Southern California, and
    argued that jurors would likely have negative impressions of
    gangs. Counsel doggedly pursued a ruling on this motion in
    limine for nearly a year, insisting that without a ruling the
    defense would be unable to “strategize [and] determine what
    course of action to take with regard to jury selection and
    cross-examination.” In light of community awareness of
    gang-related violence in San Diego in the mid-1980s, we
    cannot say that the defense trial team’s decision to insulate
    the jury from Ayala’s gang affiliation was unreasonable, nor
    are we persuaded that the California Supreme Court
    9
    Ayala argues that his counsel were ineffective because they overlooked
    key California cases, namely Cardenas and People v. Munoz, 
    204 Cal. Rptr. 271
    , 278 (Cal. Ct. App. 1984), which held that the prosecution could
    inquire into a witness’s gang membership only by using euphemisms like
    “groups” or “affiliation.” The record does not show that counsel
    overlooked this case law. Counsel cited Munoz in the motion in limine,
    which argued (in part) that neither the State nor its witnesses should be
    allowed to mention “gang,” “Mexican Mafia,” or “EME.”
    AYALA V. CHAPPELL                         27
    unreasonably applied Strickland when it deferred to the
    defense team’s informed, strategic choice. See Harrington,
    
    562 U.S. at 105
    .
    Ayala nevertheless argues that his lawyers’ failure to call
    witnesses with any connection to a gang was overly cautious
    and unduly hindered Ayala’s defense. We disagree. Ayala’s
    argument assumes that defense counsel could have controlled
    the extent to which the trial court would have allowed the
    prosecution to explore a witness’s gang affiliation on cross-
    examination if the subject had been broached on direct
    examination. But the record refutes that assumption. The
    trial court did not categorically prohibit all gang-related
    testimony because, as the court made clear in its ruling on the
    defense motion in limine, a witness’s gang affiliation could
    be highly relevant to his or her motive to lie on Ayala’s
    behalf. The court correctly ruled that such testimony might
    be admitted on cross examination if “the people perceive a
    need to deal with the credibility issue” or “if [a] question calls
    for that response,” and it did not specify whether or to what
    extent a witness’s mention of gangs might open the door to
    evidence that could connect Ayala to the Mexican Mafia.
    And even though the trial court cautioned each witness not to
    mention the Mexican Mafia, defense counsel risked losing
    command of a witness’s testimony once the witness was on
    the stand. See Mohamed v. Jeppesen Dataplan, Inc.,
    
    614 F.3d 1070
    , 1089 (9th Cir. 2010) (en banc) (recognizing
    the inherent unpredictability in presenting witness testimony).
    For these reasons, calling any witness with a gang connection
    necessarily entailed some risk of tainting Ayala in the jury’s
    eyes, and the defense team’s cautious approach to these
    witnesses was well within the broad “range of reasonable
    professional assistance.” Strickland, 
    466 U.S. at 689
    ; see
    also 
    id. at 690
     (“[S]trategic choices made after thorough
    28                   AYALA V. CHAPPELL
    investigation of law and facts relevant to plausible options are
    virtually unchallengeable.”).
    B. Counsel’s decision not to call Richard Savocchio
    Ayala’s primary IAC claim is that his lawyers were
    constitutionally ineffective because they failed to impeach
    Juan Meza with the testimony of inmate Richard Savocchio.
    Defense counsel subpoenaed Savocchio in anticipation of
    his testifying on Ayala’s behalf. Savocchio’s prison file
    showed that he had some sort of problem with the Mexican
    Mafia while incarcerated so, consistent with its pre-trial
    ruling, the trial court required him to testify at a hearing
    outside of the jury’s presence to determine the extent to
    which he could be impeached before the jury with evidence
    of gang ties. Ayala, 
    1 P.3d at 31
    .
    Savocchio said that he and Meza were incarcerated
    together after the 43rd Street murders and that Meza told him:
    “these guys [the Ayalas] are going down anyhow, and I’m
    going to get something out of it. It’s all bullshit. I don’t
    know anything about it, they are going anyways.” Defense
    counsel argued that “Savocchio understood the meaning of
    the conversation to be that Mr. Meza was cutting a deal for
    himself to testify in the case about which he knew nothing.”
    The prosecution and the defense both asked Savocchio about
    the gang notation in his prison file, and Savocchio denied any
    gang affiliation. He testified that he was not acquainted with
    any Mexican Mafia members. Savocchio explained that the
    gang notation in his file related to a lie he told years earlier:
    In order to manipulate a transfer out of Folsom State Prison,
    he falsely claimed he owed a debt to a Mexican Mafia
    member incarcerated there.
    AYALA V. CHAPPELL                               29
    After hearing Savocchio’s testimony outside the presence
    of the jury, the trial court ruled that if the defense called
    Savocchio to testify, the prosecution would be allowed to
    impeach Savocchio with his admission that he lied to prison
    officials and that the lie involved the Mexican Mafia. The
    defense expressed concern that the prosecutor’s cross-
    examination about the Mexican Mafia might backfire and
    harm Ayala and so decided against calling Savocchio.
    Ayala argued on direct appeal that his trial counsel was
    constitutionally ineffective for declining to call Savocchio,
    and the California Supreme Court rejected this argument in
    a reasoned decision. 
    Id.
     at 32–33. Ayala raised the same
    Savocchio-based IAC claim on federal habeas review with
    slightly better results. The district court ruled that the
    California Supreme Court’s resolution of this claim was
    unreasonable under 
    28 U.S.C. § 2254
    (d)(1) because the state
    court’s rationale for denying it was inconsistent with its
    reasoning on a related evidentiary ruling.10 The district court
    10
    Ayala also argued on direct appeal that any mention of the Mexican
    Mafia would have been “substantially more prejudicial than probative,”
    and that the trial court erred when it ruled that, if the defense called
    Savocchio, the prosecution could impeach him with evidence that he lied
    about having a problem with the Mexican Mafia. Ayala, 
    1 P.3d at
    32
    (citing 
    Cal. Evid. Code § 352
    ). The California Supreme Court was not
    persuaded. It reasoned, “Savocchio would have been impeached, if at all,
    with evidence that he was not in a prison gang.” 
    Id.
     The California court
    “fail[ed] to discern how [Savocchio’s testimony] would link defendant
    with the Mexican Mafia in the jurors’ minds.” 
    Id.
     The district court ruled
    that this rationale was irreconcilable with the state court’s simultaneous
    dismissal of Ayala’s Savocchio-related IAC claim because, in dismissing
    the IAC claim, the California court implicitly recognized that Savocchio’s
    testimony about the Mexican Mafia could have harmed Ayala. The
    district court’s point is well taken, compare 
    id.,
     with 
    id. at 33
    , but we are
    not persuaded that the state court’s decision was unreasonable within the
    30                    AYALA V. CHAPPELL
    reviewed de novo Ayala’s claim that his lawyers were
    ineffective for failing to call Savocchio and still denied relief.
    After thoroughly examining the record, including new
    evidence Ayala adduced at the 2010 evidentiary hearing, the
    district court concluded that counsels’ decision regarding
    Savocchio did not prejudice Ayala. Ayala renews this IAC
    claim in our court, pressing his strongest theory: if nothing
    else, Ayala argues, the defense should have reopened its case
    to call Savocchio after Rafa recanted because at that point the
    jury must have known Ayala was affiliated with a gang, and
    there would have been nothing to lose by allowing the jury to
    hear Savocchio’s anticipated reference to the Mexican Mafia.
    We agree that the cost-benefit analysis associated with
    Savocchio’s testimony significantly changed after Rafa
    recanted. Recalled to the witness stand by the prosecutor,
    Rafa told the jury that he had seen the Ayala brothers at the
    shop on the day of the murders and that he lied when he said
    otherwise because Ayala asked him to. He testified that he
    knew of (and feared) the “Northern group” and the “Southern
    group” at Donovan State Prison. When asked by the
    prosecutor whether he “believe[d] that the defendant in this
    case has any influence over what other people in this
    Southern group might do, as it pertains to you,” Rafa
    answered “[y]es.” He also said he initially testified for Ayala
    because he was afraid that if he did not “cooperate with” the
    Ayalas he might “get killed or something.” Rafa’s
    recantation certainly marked a sea change in the trial, but we
    are not convinced that his testimony about the “Southern” and
    “Northern” groups inevitably led the jury to conclude that
    meaning of § 2254(d)(1), because, as the California Supreme Court
    recognized, any mention of the Mexican Mafia—even one seemingly
    unrelated to Ayala—could have undermined counsel’s “no-gang” strategy.
    AYALA V. CHAPPELL                        31
    Ayala was personally affiliated with the Mexican Mafia. The
    questions about “Northern” and “Southern” groups occupied
    a relatively small part of Rafa’s testimony, neither Rafa nor
    counsel used the words “gang,” “EME,” or “Mexican Mafia,”
    and from our review of the record it is not clear that the jury
    would have equated these prison groups with the street gangs
    that had received notoriety in southern California at the time
    of the trial. In this sense, defense counsel’s “no-gang”
    strategy may have partially survived Rafa’s testimony.
    More importantly, counsel did not make their decision
    regarding Savocchio in a vacuum but instead had to gauge the
    likely value to be gained from Savocchio’s testimony. Even
    after Rafa recanted, there were several reasons to think that
    Savocchio’s testimony might have been more harmful than
    helpful: (1) Savocchio did not have a close relationship with
    Meza before Meza allegedly admitted to him that he was
    testifying falsely against Ayala, and it is unclear why Meza
    would have chosen to confide in Savocchio; (2) Savocchio’s
    testimony that he knew almost nothing about prison gangs
    despite spending most of his life in prison may have appeared
    unbelievable; (3) Savocchio had a number of prior
    convictions; and (4) Savocchio admitted that he lied to prison
    officials to get transferred to another prison. For these
    reasons, defense counsel had good reason to question whether
    the jury would have believed Savocchio and thus whether
    Savocchio’s testimony would have effectively impeached
    Meza. And calling Savocchio to testify entailed the certain,
    if unquantifiable, risk that the prosecutor’s cross-examination
    would concretely link Ayala to the Mexican Mafia. We have
    held that when “the risks associated with calling [certain
    witnesses] to testify outweighed the potential benefits . . . it
    is reasonable to conclude that counsel wasn’t ineffective in
    32                  AYALA V. CHAPPELL
    failing to call” those witnesses. Zapien v. Martel, 
    805 F.3d 862
    , 870 (9th Cir. 2015).
    The California Supreme Court denied this claim because
    it reasoned that defense counsel believed their “victory
    regarding mention of gangs” was intact even after Rafa
    recanted. See Ayala, 
    1 P.3d at 33
    . We agree that defense’s
    “no-gang” plan was probably preserved to some degree, but
    we also acknowledge that Rafa’s recantation left the defense
    scrambling. Outside of the jury’s presence, defense counsel
    sought a continuance because Rafa’s changed testimony
    altered “the entire complexion of the case.” But the defense
    ultimately elected not to abandon the “no-gang” strategy and
    we cannot find statements in the state court record in which
    counsel or the court acknowledged that Rafa’s testimony
    revealed Ayala’s gang affiliation to the jury.
    We owe considerable deference to the California Supreme
    Court under the standards dictated by AEDPA, see Glebe,
    135 S. Ct. at 430, and the California Supreme Court owed
    considerable deference to defense counsel under the standards
    dictated by Strickland, see Harrington, 
    562 U.S. at 105
    .
    There is room for fairminded jurists to disagree about
    whether defense counsels’ decision not to call Savocchio to
    testify fell below an objectively reasonable standard of care.
    See 
    id. at 103
    . More to the point, even if we agreed with the
    district court that the California court’s analysis of
    Savocchio’s testimony was internally inconsistent and
    therefore unreasonable under AEDPA, we also agree with the
    district court that, reviewed de novo, this claim does not
    entitle Ayala to relief.
    On de novo review we consider evidence the parties
    elicited at the 2010 evidentiary hearing. See Crittenden,
    AYALA V. CHAPPELL                       33
    804 F.3d at 1010. This evidence substantially undermines
    Ayala’s Savocchio-based IAC claim. In 2010, Savocchio
    admitted that he did owe a debt to someone affiliated with the
    Mexican Mafia around the time of Ayala’s trial. Savocchio
    testified at the evidentiary hearing that he embellished the
    details of his connection to the Mexican Mafia in the 1980s
    to secure the transfer to another prison, but he denied that he
    wholly invented his fear of the gang. It is impossible to know
    which version of history Savocchio would have told if
    defense counsel had called him to testify at trial, but if
    Savocchio told the jury that his fear of the Mexican Mafia
    was real—which is what he said during the 2010
    hearing—the prosecutor surely would have asked whether
    this fear motivated him to testify on Ayala’s behalf. Even
    after Rafa recanted, this line of questioning would have
    damaged Ayala in two ways: (1) the jury would have had
    another reason to disbelieve Savocchio; and (2) it would have
    crystalized the impression that Ayala was a dangerous gang
    member thereby suggesting guilt by association.
    Defense counsel also testified at the 2010 hearing. Lead
    counsel confirmed that she initially chose not to call
    Savocchio because she was unsure whether his testimony
    would open the door to damaging gang affiliation evidence:
    [T]he judge made it clear that if Mr.
    Savocchio testified he was going to allow
    impeachment with regard to the EME issue; in
    other words, whatever relationship Mr.
    Savocchio had or didn’t, whether real or
    something he had made up, about the EME,
    and that it was going to open the door in a
    specific way to the gang issue that we had
    been attempting to keep out of the case.
    34                   AYALA V. CHAPPELL
    Lead counsel explained that she reviewed Savocchio’s prison
    file with him before the 1988 in limine hearing, and although
    she lacked specific recollection of her pre-trial meeting with
    Savocchio, she surmised that she was aware of his debt to
    someone connected with the Mexican Mafia.
    Counsel acknowledged at the 2010 hearing that she would
    have pursued a different trial strategy if she had known Rafa
    was going to recant. But as we have observed, counsel could
    not have known this would happen; indeed, Rafa’s
    recantation was a devastating development for the defense
    because it came so late in the trial and counsel built their
    defense on a “no-gang” strategy. From the outset, the defense
    team prepared with the aim of keeping evidence of Ayala’s
    gang affiliation from the jury. This meant that the defense
    team did not extensively voir dire the jury on their attitudes
    about gangs because they did not want to suggest that the
    43rd Street murders were gang related. It also meant the
    defense did not present expert testimony to explain the
    distinction between prison gangs and street gangs, or that
    Ayala’s gang was different from those that terrorized
    southern California in the mid-1980s. After Rafa recanted,
    the defense requested and received a continuance to regroup.
    It considered abandoning its “no-gang” strategy, but it had no
    voire dire record from which to predict how the jury would
    react and no expert testimony that might have allowed it to
    contextualize Ayala’s participation in the Mexican Mafia.
    Worse, shifting strategies would have forced counsel to admit
    to the jury that the defense withheld key facts about Ayala’s
    gang-involvement. Ayala does not explain how defense
    counsel could have completed such a maneuver without
    ruining her credibility with the jury, and Ayala’s own
    Strickland expert acknowledged that “[t]he credibility of
    counsel during all phases of a trial . . . is absolutely crucial.”
    AYALA V. CHAPPELL                             35
    In sum, we agree with the district court that the initial
    decision not to present Savocchio’s testimony did not fall
    below an objective standard of reasonableness. See Bemore,
    788 F.3d at 1163 (“[A] tactical decision may constitute
    constitutionally adequate representation even if, in hindsight,
    a different defense might have fared better.”). We also agree
    with the district court’s analysis of counsel’s decision not to
    reopen the defense case after Rafa testified. In light of the
    risks and difficulties presented by pivoting away from a “no-
    gang” strategy, the decision not to make such a dramatic
    transition did not fall below an objectively reasonable
    standard of care. Indeed, a holding to the contrary would be
    the type of “Monday morning quarterbacking” Strickland
    prohibits. See Strickland, 
    466 U.S. at 689
     (reviewing courts
    must “eliminate the distorting effects of hindsight”). Habeas
    relief is not warranted on this claim.11
    C. Counsel’s decision not to call “other witnesses”
    Ayala also argues that trial counsel was ineffective for
    failing to impeach: (1) Meza by calling inmate Raul Garcia to
    testify that Meza admitted to knowing nothing about the 43rd
    Street murders; and (2) Castillo, with evidence that he
    solicited Juan Mendez (and possibly Luis “Bobo” Garcia) to
    kill victim Zamora in the months before the murders.
    11
    Ayala also argues that trial counsel was ineffective by failing to
    impeach Meza with evidence about his past involvement with gangs and
    longstanding relationship with Detective Chacon. The record refutes this
    claim. Trial counsel thoroughly impeached Meza. She avoided certain
    topics—such as Meza’s former status as a Mexican Mafia member and his
    friendly relationship with Detective Chacon, a gang intelligence
    officer—because cross-examination on those topics would have permitted
    the State to inquire, on re-direct, about Meza’s (and Ayala’s) Mexican
    Mafia affiliation.
    36                      AYALA V. CHAPPELL
    Ayala did not name these “other witnesses” in his
    Exhaustion Petition or in the declarations he filed with the
    California Supreme Court. There, he alleged only that
    counsel was ineffective for failing to impeach Meza with
    evidence that he “had confessed to numerous witnesses,
    including Richard Sovacchio [sic] among many others –
    known to Petitioner’s counsel” that he had no idea wither
    Petitioner had actually participated in the 43rd street murders.
    Similarly, Ayala’s Exhaustion Petition and the supporting
    declarations alleged only that counsel was ineffective for
    failing to impeach Castillo with evidence that he “had, prior
    to the murders, solicited two different witnesses to kill victim
    Zamora.” Under Pinholster, we review these IAC claims as
    Ayala presented them to the California Supreme Court.
    
    563 U.S. at
    187 n.11 (“Even if the evidence adduced in the
    District Court additionally supports [a claim presented to the
    state court], we are precluded from considering it.”).
    Therefore, we do not consider evidence that specific
    individuals—including Raul Garcia, Mendez, and Luis
    Garcia—were willing to testify on Ayala’s behalf in 1988.
    See 
    id. at 181
     (“[R]eview under § 2254(d)(1) is limited to the
    record that was before the state court that adjudicated the
    claim on the merits.”).12
    The California Supreme Court did not unreasonably deny
    Ayala’s IAC claims as they relate to “other witnesses.”
    Ayala did not allege in the California court that counsel could
    12
    Because the California Supreme Court summarily denied these IAC
    claims, we “determine what arguments or theories . . . could have
    supported . . . the state court’s decision; and then . . . ask whether it is
    possible fairminded jurists could disagree that those arguments or theories
    are inconsistent with the holding in a prior decision of” the Supreme
    Court. Harrington, 
    562 U.S. at 102
    .
    AYALA V. CHAPPELL                       37
    have presented the testimony of these witnesses without
    wrecking their “no-gang” defense plan. To the contrary,
    Ayala admitted in his Exhaustion Petition that counsel chose
    not to call these witnesses because counsel believed the
    witnesses were gang-affiliated. Just as we conclude that
    counsel’s decision to insulate the jury from mention of the
    Mexican Mafia was “sound trial strategy,” Strickland,
    
    466 U.S. at 689
    , we conclude that decisions counsel made to
    implement this strategy, like declining to call gang-affiliated
    witnesses, were likewise reasonably strategic.              
    Id.
    “[S]trategic choices made after thorough investigation of law
    and facts relevant to plausible options are virtually
    unchallengeable” under Strickland. 
    Id. at 690
    . The
    California Supreme Court’s denial of these claims was not an
    unreasonable application of Strickland.
    Ayala also argues that defense counsel failed to
    independently investigate the gang affiliation of numerous
    witnesses before deciding not to call them. He claims
    defense counsel entered “into an agreement with the
    prosecution, whereby counsel provided to the prosecution the
    names of [Ayala’s] prospective witnesses, and would agree
    not to call certain witnesses upon receiving any representation
    or threat from the prosecution of possible gang-related
    affiliations relating to that witness.”
    Ayala correctly argues that “counsel has a duty to make
    reasonable investigations or to make a reasonable decision
    that makes particular investigations unnecessary.” Wiggins
    v. Smith, 
    539 U.S. 510
    , 521 (2003) (quoting Strickland,
    
    466 U.S. at
    690–91). But the record before the state court
    does not support Ayala’s claim that his lawyers abdicated this
    duty. Instead, it shows that counsel located potential
    witnesses and sought access to their prison files before
    38                  AYALA V. CHAPPELL
    deciding whether to call them to testify. For example,
    counsel reviewed Savocchio’s prison file before he testified
    at the in limine hearing. And counsel stated during pretrial
    hearings that she subpoenaed “department of corrections’
    files” for key witnesses in part to learn whether those
    witnesses were gang-affiliated. The trial court ordered the
    State to turn over “[a]ll notes or memoranda, handwritten or
    typed, by an investigating officer, peace officer, or deputy
    district attorney of their conversations with any witnesses
    which is relevant to said witness[es]’ credibility,” and one of
    the district attorneys confirmed that her office delivered this
    discovery, including requested prison files, to the defense
    team. Because of these efforts by defense counsel, Ayala’s
    case is unlike Thomas v. Chappell, a pre-AEDPA case where
    we granted relief because the defense “conducted no
    investigation for supporting witnesses or corroborating
    evidence outside” the community in which the murder took
    place (and in which petitioner lived), despite sworn testimony
    that the victims and another suspect came from a different
    community. 
    678 F.3d 1086
    , 1096 (9th Cir. 2012); see also 
    id. at 1104
     (counsel’s “failure to call [the witness] cannot be
    excused as a tactical decision because [counsel] did not have
    sufficient information with which to make an informed
    decision”). Ayala’s defense team opted against calling some
    potential witnesses; it did not overlook them.
    To the extent Ayala argues that his lawyers performed
    deficiently because they relied to some degree on the
    prosecution’s information about potential witnesses, that
    argument is also without merit. Defense counsel was
    concerned not only with what prospective witnesses’ prison
    files showed, but also with Detective Chacon’s knowledge of
    witnesses’ affiliations that might surface on cross-
    examination. Counsel were keenly aware of Detective
    AYALA V. CHAPPELL                       39
    Chacon’s involvement in this prosecution; they knew he was
    a gang intelligence officer who had kept tabs on several of the
    prospective witnesses for years before Ayala’s trial, and they
    suspected that Chacon’s awareness of potential witnesses’
    gang affiliations far outstripped the information contained in
    their prison files. If the prosecution had information tying a
    prospective witness to gangs, from any source, calling the
    witness to testify might have opened the door for the State to
    impeach the witness with evidence of gang-driven bias. For
    this reason, there is ample room for fairminded disagreement
    about whether consulting with the prosecution before calling
    prospective impeachment witnesses was an “error[] so serious
    that counsel was not functioning as the ‘counsel’ guaranteed
    the defendant by the Sixth Amendment.” Strickland,
    
    466 U.S. at 687
    ; see also Harrington, 
    562 U.S. at 103
    (discussing AEDPA deference). The California court
    reasonably rejected Ayala’s failure-to-investigate claim.
    But even if we reviewed this claim de novo, Ayala would
    not be eligible for relief. Defense counsel confirmed during
    the 2010 evidentiary hearing that she purposely chose not to
    call many witnesses, including Raul Garcia and Mendez,
    because those witnesses were or had been gang affiliated.
    Exhibits Ayala introduced at the 2010 hearing show that
    counsel investigated these witnesses to evaluate potential
    exposure to harmful gang affiliation evidence. For example,
    Ayala submitted defense counsel’s pre-trial notes in which
    she described her impressions of Raul Garcia: “Claims he
    was approached by Meza to make up a story about the
    killings. He knows Ronnie well. My reading between the
    lines is that this is possible B.S. and he is very impeachable
    re relationship with Ronnie.” Cf. Cannedy v. Adams,
    
    706 F.3d 1148
    , 1160–61 (9th Cir. 2013) (granting relief when
    uncontradicted evidence showed that trial counsel failed to
    40                      AYALA V. CHAPPELL
    interview a key witness). Ayala also introduced notes from
    defense counsel’s pretrial interviews with Juan Mendez in
    which she wrote that Mendez “ha[d] been reported in his
    prison file [as] . . . EME affiliated,” that Mendez knew Ayala
    from the prison gang, and that Mendez had done favors for
    the gang during his time in prison. These notes show that
    trial counsel’s decision not to call “numerous witnesses” was
    consistent with her trial strategy. Strickland, 
    466 U.S. at 689
    .
    Relief under Strickland is not available.
    Finally, Ayala asks us to stay his federal proceedings so
    he can seek reconsideration of his IAC claims in the
    California Supreme Court. See Gonzalez v. Wong, 
    667 F.3d 965
    , 980 (9th Cir. 2011) (staying federal case to give
    petitioner the opportunity to present to the state court
    evidence first adduced in federal court). In particular, Ayala
    seeks the chance to submit in state court evidence he first
    presented in the federal proceedings, including evidence that
    Juan Mendez, Raul Garcia, and Luis Garcia were willing to
    testify on Ayala’s behalf in 1988. But the district court held
    an extended evidentiary hearing on Ayala’s IAC claims, and
    its lengthy and well-reasoned order concluded that Ayala’s
    petition failed even in light of this newly presented evidence.
    See Ayala v. Chappell, No. 01CV0741-BTM (MDD), 
    2013 WL 1315127
     (S.D. Cal. Mar. 28, 2013). We agree with the
    district court that the 2010 evidence does not strengthen
    Ayala’s IAC claims, and we decline Ayala’s invitation to stay
    his federal case.13
    13
    Ayala additionally argues that counsel rendered deficient performance
    by declining to call Jesus Aguilar, Javier Frausto, and Sal Colabella,
    whose testimony would have corroborated Juan Mendez’s story that
    Castillo previously solicited people to kill one of the victims. Ayala did
    not present these names to the state court, although information about
    AYALA V. CHAPPELL                             41
    D. The state court’s fact-finding process
    Ayala argues that de novo review of his Strickland claims
    is warranted because the state court’s fact-finding process
    was deficient. He requested an evidentiary hearing in his
    initial state habeas corpus petition, which the California
    Supreme Court summarily denied in June 2000, and in his
    Exhaustion Petition, which the California Supreme Court
    summarily denied in September 2003. Ayala raised his IAC
    claims in both state court petitions, and he now argues that it
    was unreasonable for the California Supreme Court to resolve
    these claims without first granting him an evidentiary
    hearing. We disagree.
    We have recognized that a state court’s decision may be
    based on an “unreasonable determination of the facts,”
    
    28 U.S.C. § 2254
    (d)(2), if “the [fact-finding] process
    employed by the state court [was] defective,” Taylor v.
    Maddox, 
    366 F.3d 992
    , 999 (9th Cir. 2004); see also Woods,
    764 F.3d at 1128. “To find the state court’s [fact-finding]
    these witnesses was in his possession when he filed his Exhaustion
    Petition. Therefore, under Pinholster we cannot consider the testimony
    of these witnesses, 
    563 U.S. at 181
    , and a stay is not proper under
    Gonzalez, 667 F.3d at 979. Shortly before oral argument in our court,
    Ayala filed a declaration from Travis Chelberg, a newly-identified
    declarant who participated in a residential drug abuse treatment program
    with Meza decades after Ayala’s trial. Chelberg declares Meza admitted
    to him that he lied when he testified against the Ayalas. Ayala moves for
    remand under Rhines v. Weber, 
    544 U.S. 269
     (2005), so the district court
    can review this evidence. See ECF No. 61. The motion is denied. We
    decline to use the stay-and-abeyance procedure outlined in Rhines and
    ordinarily reserved for mixed habeas petitions to allow Ayala to develop
    his claim based on new evidence. The proper method for obtaining relief
    is to seek leave to file a second habeas petition. See 
    28 U.S.C. § 2244
    (b)(3).
    42                 AYALA V. CHAPPELL
    process defective . . . ‘we must more than merely doubt
    whether the process operated properly. Rather, we must be
    satisfied that any appellate court to whom the defect is
    pointed out would be unreasonable in holding that the state
    court’s fact-finding process was adequate.’” Hurles,
    752 F.3d at 778 (citation omitted). A state court’s denial of
    a petitioner’s request for an evidentiary hearing does not
    necessarily render its fact-finding procedure defective.
    Woods, 764 F.3d at 1128 (concluding that it “was not
    unreasonable for the Washington Supreme Court to deny
    Woods’s request for a[n evidentiary] hearing”); see also
    Harrington, 
    562 U.S. at 97
     (denying relief on an IAC claim
    where the California Supreme Court did not grant petitioner
    an evidentiary hearing).
    Turning first to Ayala’s Savocchio-based IAC claim, we
    have no trouble concluding that the California Supreme
    Court’s decision to deny Ayala an evidentiary hearing was
    not unreasonable. The record before the California Supreme
    Court included a complete transcript of the trial court’s in
    limine hearing where defense counsel explained her decision
    not to call Savocchio as a witness. The California court
    “reasonably concluded that the evidence already adduced was
    sufficient to resolve” the question of counsel’s performance
    on this score. Hibbler v. Benedetti, 
    693 F.3d 1140
    , 1147 (9th
    Cir. 2012).
    We come to the same conclusion on Ayala’s IAC claim
    based on “other witnesses.” As explained, Ayala alleged in
    his Exhaustion Petition that the defense team’s “no-gang”
    strategy drove their decision not to call numerous other
    impeachment witnesses, and this remains the crux of his IAC
    argument in our court. The record before the California
    Supreme Court vividly illustrated that the “no-gang” strategy
    AYALA V. CHAPPELL                              43
    was well researched and deliberate, and that decisions
    counsel made to carry out the strategy, including decisions
    not to call gang-affiliated witnesses, were likewise
    reasonable. See Strickland, 
    466 U.S. at
    689–90. The
    California Supreme Court did not need an evidentiary hearing
    to resolve this IAC claim. See People v. Duvall, 
    886 P.2d 1252
    , 1258–59 (Cal. 1995) (requiring California courts to
    assume the truth of a habeas petitioner’s non-conclusory
    allegations); Laurie L. Levenson, California Criminal
    Procedure § 30:25 (2014) (“The court may also deny the
    petition without a hearing if consideration of the written
    return and matters of record persuade it that the contentions
    of the petition lack merit.”).14
    III.     Brady relating to Juan Meza
    Ayala’s next group of claims arises from Brady v.
    Maryland, 
    373 U.S. 83
     (1963). Ayala argues in these claims
    that the State failed to disclose impeachment evidence about
    its key witness, Juan Meza, who testified at trial that Ayala
    enlisted him to plan and participate in the 43rd Street
    murders. Ayala argues the State “failed to disclose specific
    details of Meza’s long history as a prosecution informant, his
    years-long relationship with Chacon as a snitch, the fact that
    Meza previously denied having any personal knowledge of
    the 43rd Street murders, and the full extent of the
    consideration that Meza received for his testimony against
    14
    Because we conclude that the California Supreme Court reasonably
    applied Strickland’s deficient performance prong when it denied Ayala’s
    IAC claims, we need not decide whether Ayala established prejudice
    under Strickland prong two. See Cannedy, 706 F.3d at 1157 (“If the state
    court reasonably concluded that Petitioner failed to establish either prong
    of the Strickland test, then we cannot grant relief.” (footnote omitted)).
    44                   AYALA V. CHAPPELL
    Ayala.” The State also allegedly concealed evidence that
    Detective Chacon orchestrated Meza’s decision to come
    forward to testify nearly two years after the murders. This
    issue draws from several certified claims (namely, claims 5,
    6, and 8), but Ayala focused his argument in our court on
    uncertified claim 76.
    Claim 76 arose from Meza’s testimony at the 2010
    evidentiary hearing wherein he discussed benefits he received
    in exchange for testifying against Ayala in 1988. Ayala
    interpreted this hearing testimony as revealing previously
    undisclosed evidence about Meza’s immunity agreement.
    Ayala raised claim 76 in his third amended habeas corpus
    petition, asserting that the State failed to disclose the scope of
    the immunity Meza received in exchange for his trial
    testimony. The district court granted the State’s motion for
    summary judgment on claim 76, ruling that the claim was
    unexhausted and lacked merit.
    Brady is the clearly established law governing the state’s
    duty to disclose impeachment evidence favorable to the
    defense. 
    373 U.S. at 87
    . Brady holds that “the suppression
    by the prosecution of evidence favorable to an accused upon
    request violates due process where the evidence is material
    either to guilt or to punishment.” 
    Id.
     “Evidence favorable to
    [the] accused” includes evidence that would help a defendant
    impeach prosecution witnesses. See Giglio v. United States,
    
    405 U.S. 150
    , 154–55 (1972). To establish a Brady violation,
    a defendant must show: “(1) the evidence at issue is favorable
    to the accused, either because it is exculpatory or because it
    is impeaching; (2) the evidence was suppressed by the
    government, regardless of whether the suppression was
    willful or inadvertent; and (3) the evidence is material to the
    AYALA V. CHAPPELL                        45
    guilt or innocence of the defendant.” United States v.
    Sedaghaty, 
    728 F.3d 885
    , 899 (9th Cir. 2013).
    A. Claim 76
    Ayala concedes in his opening brief that claim 76 is
    unexhausted because it is based on testimony elicited for the
    first time in federal district court.        See 
    28 U.S.C. § 2254
    (b)(1)(A); Woods, 764 F.3d at 1129–30. He asks us to
    review it on the merits because it is closely connected to
    several of his exhausted, certified claims, but he cites no
    authority for this proposition and we cannot create any here.
    Ayala alternatively asks us to stay his federal proceedings so
    that he may present claim 76 to the California Supreme
    Court. He bases this request on our decision in Gonzalez v.
    Wong, 
    667 F.3d 965
     (9th Cir. 2011).
    In Gonzalez, the State concealed critical impeachment
    documents until petitioner’s state post-conviction proceedings
    were complete, a flagrant and continuing Brady violation. 
    Id. at 976
    . “Because the suppressed materials substantially
    strengthened the petitioner’s Brady claim, we remanded that
    portion of the petitioner’s case to the district court, with
    instructions to stay the habeas proceedings until the petitioner
    had an opportunity to present the new evidence to the
    California Supreme Court.” Thompson v. Runnels, 
    705 F.3d 1089
    , 1100 (9th Cir. 2013) (discussing Gonzalez). We stayed
    Gonzales’s federal case, thereby enabling him to present this
    new evidence in state court, because: (1) the evidence first
    uncovered in federal court gave rise to a potentially
    meritorious claim; and (2) the petitioner diligently pursued
    that evidence in the state court. See Gonzalez, 667 F.3d at
    979–80.
    46                  AYALA V. CHAPPELL
    Ayala’s case is not analogous to Gonzalez because
    Meza’s 2010 hearing testimony did not give rise to a
    potentially meritorious Brady claim. The State disclosed
    Meza’s written immunity agreement to defense counsel
    before Ayala’s trial in 1988, and the agreement was admitted
    as a trial exhibit. The agreement showed that Meza testified
    against Ayala in exchange for use and derivative use
    immunity and a favorable recommendation regarding
    resentencing on his February 1987 drug conviction. Ayala
    concedes that the State properly disclosed Meza’s written
    agreement, but he argues that Meza and the State also had a
    broader unwritten immunity agreement that was undisclosed
    at trial. According to Ayala, the State verbally guaranteed it
    would not prosecute Meza for “anything else [that] came up”
    during Meza’s discussions with the district attorneys about
    Ayala’s case, including past assaults, stabbings, and
    potentially a murder. Ayala also argues that the unwritten
    agreement guaranteed Meza’s immediate release from
    custody.
    The record does not support Ayala’s contention that a
    broad unwritten agreement ever existed. Ayala’s lawyer
    conceded at oral argument that the only evidence of a
    “sidebar” immunity agreement is Meza’s 2010 evidentiary
    hearing testimony. That testimony consisted mostly of Meza
    responding “yes” to leading questions from Ayala’s lawyer:
    Q: And part of the agreement was that you
    would be sentenced to four years, but after
    you testified you would be released?
    A: Mm-hmm.
    Q: Is that yes?
    AYALA V. CHAPPELL                      47
    A: Yes.
    Q: Do you recall also there was some
    considerable conversation about immunity,
    that you would be given what is called use
    and derivative immunity; is that right?
    A: Yes.
    Q: Just as you sit here today — first of all, do
    you recall that that was part of the deal, too,
    was that if you talk to the DA you would be
    given use and derivative immunity?
    A: Mm-hmm.
    Q: Is that yes?
    A: Yes.
    Q: Your recollection, sir, or your
    understanding of use and/or derivative
    immunity, what was that? What did that
    encompass?
    A: I guess if anything else came up I wouldn’t
    be charged with it, just in case.
    Q: So just in case you were considered, say, a
    suspect in the 43rd Street robberies and
    murders, you wouldn’t be charged; is that
    right?
    A: Mm-hmm.
    48                  AYALA V. CHAPPELL
    Q: Yes?
    A: Yes.
    ...
    Q: So if anything else came up while you
    were talking to Dellatore, you wouldn’t be
    charged with any of those things either?
    A: Yes.
    Contrary to Ayala’s claim 76, Meza also testified that, years
    before Ayala’s trial, the State declined to prosecute him for
    crimes he committed in prison because “they just couldn’t
    prove it,” not because of a sweeping, unwritten immunity
    deal he received in exchange for testifying against Ayala.
    The record is likewise inconsistent with Ayala’s argument
    that the State promised Meza immediate release from
    custody: Exhibits introduced at the 2010 hearing establish
    that the prosecution requested Meza be resentenced on his
    February 1987 drug arrest, not that any reduction was
    guaranteed. This Brady claim also fails because Ayala’s trial
    lawyers knew Meza was testifying in the hope of receiving a
    reduction in his jail time. Because Meza’s 2010 testimony
    does not persuade us that the State guaranteed Meza
    immunity or benefits beyond that which it disclosed in 1988,
    we decline to stay Ayala’s federal case, deny claim 76 on the
    merits, and deny as moot Ayala’s request for a COA.
    B. Ayala’s certified Brady claims
    In his certified Brady claims, Ayala argues: (1) “the
    prosecution failed to disclose all material information
    AYALA V. CHAPPELL                     49
    regarding its use of jailhouse snitches with known gang
    affiliations, including but not limited to Juan Meza”;
    (2) “[t]he prosecution was aware that Juan Meza had a long
    term informant relationship with Detective Chacon and that
    in the years preceding the trial Meza had received favors
    and/or sweetheart deals for a number of criminal offenses,
    and that said consideration had been instigated by Detective
    Chacon”; and (3) the State concealed evidence that Chacon
    and Meza met several times before Meza decided to testify
    about his role in planning the 43rd Street murders.
    The state court record shows that the government did not
    conceal this information about Meza. In fact, in his
    Exhaustion Petition, Ayala asserted that defense counsel
    knew (and failed to use for impeachment purposes) many
    facts about Meza that Ayala now claims the government
    suppressed. The Exhaustion Petition averred:
    [Defense counsel] were aware that:
    A. Juan Meza and Detective Carlos Chacon
    knew each other since 1965; . . .
    C. Whenever Juan Meza was incarcerated
    Detective Chacon would visit him; and
    these visits were generally unannounced;
    D. As a result of this “relationship” . . .
    Detective Chacon had kept a file on Juan
    Meza for the ten years preceding the trial;
    E. Juan Meza had been a prosecution
    informant, who received benefits of
    50                  AYALA V. CHAPPELL
    shortened and/or lenient sentences for his
    criminal offenses;
    F. Meza . . . had been in the Mexican Mafia,
    however he was currently considered a
    drop out[; and]
    G. [V]ery soon after the April 26, 1985
    killings, Detective Chacon had visited Meza,
    while incarcerated, a number of times, but that
    it was not until February, 1987, after Juan
    Meza was due to be sentenced to a term of
    four years in the state penitentiary, and after a
    visit from Detective Chacon, that Juan Meza
    surfaced as a witness in the case.
    Either counsel knew about these facts and allegations and
    failed to use them, or the State concealed this information
    from counsel; Ayala cannot have it both ways.
    The trial transcript confirms that counsel knew these facts
    and allegations. Meza testified outside the jury’s presence
    that he had known Chacon since childhood, and that Chacon
    frequently visited him in jail. Meza confirmed that Chacon
    visited him in jail in May or June 1985 but he denied that he
    and Chacon discussed Meza’s involvement in the 43rd Street
    murders at that meeting. Chacon visited Meza again in
    February 1987, shortly after Meza was arrested on the
    unrelated drug charge, and Meza gave Chacon some
    information about the 43rd Street murders. By April 1987,
    Meza admitted that he was involved in planning the murders,
    and by May of that year, Meza told Chacon that he had
    decided to testify against the Ayalas. Defense counsel
    questioned Meza about previous “sweetheart” deals he
    AYALA V. CHAPPELL                  51
    received because of his relationship with Chacon, but Meza
    repeatedly denied the existence of such deals, and Ayala
    points to no evidence that other deals were actually made.
    Because Ayala has not established that the State suppressed
    the information that underpins his certified Brady claims, the
    state court’s summary denial of them was not unreasonable.
    See Sedaghaty, 728 F.3d at 899 (to establish a Brady
    violation, defendant must show that evidence was
    “suppressed by the government”).
    IV.       Brady claims regarding Detective Chacon
    Ayala next claims the State violated Brady by concealing
    evidence that Detective Carlos Chacon had a longstanding
    bias against the Ayala brothers.15 Ayala first presented this
    claim to the California Supreme Court in his Exhaustion
    Petition, and the California court summarily denied it. The
    district court granted the State’s motion for summary
    judgment on this claim, concluding that the California
    Supreme Court’s application of Brady was reasonable under
    
    28 U.S.C. § 2254
    (d)(1). We affirm.
    In support of the claim that Detective Chacon was biased
    against the Ayala brothers, Ayala alleged the following to the
    California Supreme Court: (1) Chacon had a long-standing
    personal grudge against the Ayalas stemming from his belief
    that the Ayalas were involved in the 1977 murder of
    Chacon’s close friend, Eduardo Cruz; (2) Chacon previously
    accused the Ayalas of “complicity in many murders previous
    to the 43rd Street murders”; (3) Chacon was related by
    marriage to the Sosa family, whose gang—Nuestra Familia—
    was a rival of the Mexican Mafia’s; and (4) the district
    15
    This argument corresponds to claim 5.
    52                      AYALA V. CHAPPELL
    attorneys in charge of Ayala’s case considered removing
    Chacon from the investigation. Ayala submitted a declaration
    by defense investigator Hart to support these allegations. In
    it, investigator Hart attested “on information and belief” that
    Chacon was biased against the Ayalas for each of these
    reasons.
    The state court reasonably rejected this Brady claim
    because Ayala presented no evidence to substantiate his
    allegation that Detective Chacon harbored bias against him.
    The spare allegations in Ayala’s petition and Hart’s
    unexplained “information and belief” did not identify any
    evidence the prosecution withheld that might have suggested
    bias, nor do they describe how Hart had personal knowledge
    of such bias. See 
    Cal. Evid. Code § 702
    (a) (“[T]he testimony
    of a witness concerning a particular matter is inadmissible
    unless he has personal knowledge of the matter.”).16 With
    nothing more, the California court need not have determined
    whether a Brady violation occurred or prejudice resulted. Cf.
    Milke v. Ryan, 
    711 F.3d 998
    , 1008 (9th Cir. 2013) (granting
    relief when “Milke presented the state court with hundreds of
    pages of court records from cases where [the officer] had
    committed misconduct, either by lying under oath or by
    violating suspects’ Miranda and other constitutional rights
    during interrogations”). We addressed a similarly sparse
    petition in Runningeagle v. Ryan and explained that “to state
    a Brady claim, [a petitioner] is required to do more than
    ‘merely speculate’ about” the withheld evidence. 
    686 F.3d 16
    For the reasons stated in the next section, we also affirm the district
    court’s dismissal of claim 5 to the extent Ayala argues that the state
    concealed evidence that Chacon intimidated Rafa and Jenifer Mendoza
    Lopez (Rafa’s wife). Because Ayala did not establish that the witnesses
    were intimidated, we conclude there was nothing to disclose.
    AYALA V. CHAPPELL                            53
    758, 769 (9th Cir. 2012); see also Duvall, 
    886 P.2d at 1258
    (“The petition should both (i) state fully and with particularity
    the facts on which relief is sought, as well as (ii) include
    copies of reasonably available documentary evidence
    supporting the claim, including pertinent portions of trial
    transcripts and affidavits or declarations.” (citations
    omitted)). Ayala’s failure to identify evidence the State
    withheld convinces us that the state court reasonably applied
    Brady when it denied this claim.17
    V. Witness intimidation
    Ayala’s next claim is primarily a due process-based
    witness intimidation claim. Ayala argues that Detective
    Chacon intimidated and threatened Rafa and his wife, Jenifer,
    and that Rafa recanted his testimony in favor of Ayala as a
    result of the threats and intimidation. Ayala also asserts that
    the State violated Napue v. Illinois, 
    360 U.S. 264
     (1959), by
    failing to correct Rafa’s testimony that Detective Chacon did
    not threaten him.18
    17
    Evidence adduced at the 2010 hearing does not change this
    conclusion. Cf. Gonzalez, 667 F.3d at 979. In his 2010 testimony,
    Chacon denied harboring any bias against the Ayalas. He explained that
    he suspected them of the 43rd Street murders and several other murders
    based on his study of their actions and whereabouts in his capacity as a
    gang intelligence officer. Defense counsel knew of these suspicions
    because she subpoenaed Chacon’s notes from the night of the murder.
    The Ayalas also knew that Chacon suspected them of an earlier murder
    because Chacon was actively involved in its investigation. In short, the
    2010 evidence does not show that the State concealed exculpatory
    evidence about Detective Chacon.
    18
    Ayala draws this issue from claims 4 and 8 (which both relate to
    witness intimidation) and claim 12 (which is a general Napue claim).
    54                     AYALA V. CHAPPELL
    As explained, when Ayala initially called Rafa as a
    defense witness, Rafa’s testimony implicated Pete Castillo in
    the 43rd Street murders and tended to exonerate the Ayalas.
    Shortly after Rafa testified for Ayala, Detective Chacon
    visited him in jail, and accused him of lying in court to
    benefit Ayala. After some discussion about the risks Rafa
    would face from gangs upon his return to prison, Rafa
    admitted to Chacon that he lied, and agreed to recant his
    testimony. Rafa’s rebuttal testimony exonerated Castillo and
    implicated the Ayalas in the 43rd Street murders.19
    Webb v. Texas, 
    409 U.S. 95
     (1972) (per curiam), is the
    clearly established law governing claims of witness
    intimidation by government officials. In Webb, the trial judge
    strongly admonished a defense witness about the risks of
    perjury before the witness testified. 
    Id.
     at 95–96. The judge
    singled out this witness, telling him:
    If you take the witness stand and lie under
    oath, the Court will personally see that your
    case goes to the grand jury and you will be
    indicted for perjury and the liklihood (sic) is
    that you would get convicted of perjury and
    that it would be stacked onto what you have
    already got, so that is the matter you have got
    to make up your mind on.
    
    Id. at 96
    . The witness chose not to testify. 
    Id.
     The Supreme
    Court reversed Webb’s conviction because “the unnecessarily
    strong terms used by the judge could well have exerted such
    19
    Ayala raised these witness intimidation and Napue claims before the
    California Supreme Court in his Exhaustion Petition, and the court
    summarily denied them. The district court likewise denied relief.
    AYALA V. CHAPPELL                       55
    duress on the witness’ mind as to preclude him from making
    a free and voluntary choice whether or not to testify.” 
    Id. at 98
    . Because the judge’s remarks “effectively drove that
    witness off the stand,” the judge violated the defendant’s due
    process right to present a defense, and reversal of his
    conviction was warranted. 
    Id.
     Under Webb, “[i]t is well
    established that ‘substantial government interference with a
    defense witness’s free and unhampered choice to testify
    amounts to a violation of due process.’” Earp v. Ornoski,
    
    431 F.3d 1158
    , 1170 (9th Cir. 2005) (quoting United States
    v. Vavages, 
    151 F.3d 1185
    , 1188 (9th Cir. 1998)).
    The California Supreme Court’s rejection of Ayala’s
    witness intimidation claim was not contrary to or an
    unreasonable application of Webb.              See 
    28 U.S.C. § 2254
    (d)(1). The California court had before it Rafa’s trial
    testimony and Hart’s declaration when it decided this claim.
    Hart declared “that Detective Chacon threatened, coerced,
    manipulated and/or intimidated potential and actual
    witnesses, including but not limited to” Rafa, and alleged that
    Chacon accomplished this coercion in part by threatening to
    investigate Rafa’s wife Jenifer for smuggling drugs into
    prison. Standing alone (and taken as true), these allegations
    could amount to “substantial . . . interference” with Rafa’s
    choice to testify. See Earp, 431 F.3d at 1170. But Hart’s
    declaration does not provide sources for its conclusions, and
    it was directly contradicted by Rafa’s 1988 trial testimony
    that Chacon did not threaten him. Rafa denied that Chacon
    told him he was on a hit list and testified that he always knew
    his life was in danger because of his involvement with gangs.
    He told the jury “[t]he only thing [Chacon] said [was] . . . ‘I
    don’t see why you’re helping these people out when you
    know’ — ‘they’ — you know, ‘they don’t care about you,’
    you know.” Rafa also denied that Chacon threatened Jenifer
    56                      AYALA V. CHAPPELL
    as a way of pressuring him to recant. Rather, he explained
    that he originally testified for the defense as a favor, but was
    motivated to recant because, despite his promise to testify,
    people associated with Ayala tried to engage Jenifer in illegal
    activity:
    But, you know, after I testified and these
    people started calling my wife, you know,
    they wanted her — told her, you know, that I
    had put him in a spot. They wanted her to go
    visit somebody else in prison to take them
    drugs and — . . . so I told them — I started
    thinking, ‘man, I do these guys all these
    favors,’ you know, ‘and they don’t show me
    no kind of respect,’ you know.
    Defense counsel vigorously cross-examined Rafa about
    whether Chacon threatened or intimidated him into recanting
    his testimony, but Rafa consistently denied that this was the
    case. With nothing to support Hart’s allegations, the
    California court did not unreasonably apply Webb when it
    rejected Ayala’s witness intimidation claim.20
    Nor did the California Supreme Court misapply federal
    law when it rejected Ayala’s Napue claim. See Napue,
    
    360 U.S. at 269
     (“[A] conviction obtained through use of
    false evidence, known to be such by representatives of the
    20
    Evidence adduced at the 2010 hearing did not strengthen Ayala’s
    witness intimidation claim. Both Jenifer and Rafa testified at the hearing
    consistent with Rafa’s trial testimony. Rafa testified that Chacon and the
    district attorneys “didn’t threaten me or they didn’t pressure me to come
    back and testify against Ronnie.” Jenifer likewise denied that Chacon
    threatened to investigate her for smuggling drugs.
    AYALA V. CHAPPELL                               57
    State, must fall under the Fourteenth Amendment.”). Ayala
    only offers Hart’s declaration to buttress the allegation that
    Rafa lied in his recanted testimony, and, as discussed, Rafa’s
    testimony refutes this charge. The California Supreme Court
    reasonably denied this claim.21
    VI.        Other alleged trial court errors
    Ayala argues that the trial court committed several other
    errors that deprived him of certain federal constitutional
    rights. We address each alleged error in turn.
    A. Refusal to strike juror Cosgove for cause
    Ayala argues that the trial court committed constitutional
    error when it declined to strike juror Cosgrove for cause.22
    According to Ayala, juror Cosgrove was predisposed to vote
    for the death penalty and his presence on the jury violated
    Ayala’s due process right to a fair and impartial jury. The
    California Supreme Court rejected this argument on direct
    appeal, see Ayala, 
    1 P.3d at
    24–25, and the district court
    denied federal habeas relief.
    Morgan v. Illinois, 
    504 U.S. 719
     (1992), is the clearly
    established law applicable to this biased-juror claim. Morgan
    21
    Ayala likewise argues that the State violated Webb, Napue, and Brady
    because it failed to disclose “a pattern of intimidation and threats directed
    at [potential prosecution witnesses Richard Buchanan and Mario Marin],
    in an effort that each testify falsely against Ayala.” This argument fails.
    Ayala did not mention Marin before the state court, and Buchanan refused
    to testify. Thus, even if Chacon threatened Buchanan, Ayala cannot
    establish prejudice.
    22
    This argument corresponds to claim 47.
    58                       AYALA V. CHAPPELL
    holds that “[a] defendant has a constitutional due process
    right to remove for cause a juror who will automatically vote
    for the death penalty.” See United States v. Mitchell,
    
    502 F.3d 931
    , 954 (9th Cir. 2007) (citing Morgan, 
    504 U.S. at 719
    ).
    The California Supreme Court’s rejection of this claim
    was not contrary to or an unreasonable application of Morgan
    because juror Cosgrove was not an automatic death penalty
    voter. Cosgrove told counsel during voire dire that he “would
    probably be 80 percent to 20 percent saying that if [he] felt
    that somebody did commit murder, that the death penalty
    should be applied,” but he also said that “if there were
    mitigating circumstances, [he] would take them into effect
    and weigh them.” Habeas relief is not warranted on this
    claim. See Mitchell, 
    502 F.3d at 955
     (affirming on plain error
    review the district court’s decision not to dismiss for cause a
    juror who “indicated that she thought the only punishment for
    certain kinds of ‘horrific’ crimes should be death” but later
    “qualified that response by indicating ‘well, death or
    imprisonment’” and promised to keep an open mind); United
    States v. Fulks, 
    454 F.3d 410
    , 428 (4th Cir. 2006) (district
    court did not abuse its discretion by letting a juror serve
    despite his statement that he would vote for the death penalty
    in a murder case “say 90 percent of the time . . . unless [the
    mitigating circumstances are] something outrageous”).23
    23
    For the same reason, we affirm the district court’s denial of relief on
    claim 34, in which Ayala argues that trial counsel was ineffective for
    failing to use a peremptory strike on juror Cosgrove. “Establishing
    Strickland prejudice in the context of juror selection requires a showing
    that, as a result of trial counsel’s failure to exercise peremptory challenges,
    the jury panel contained at least one juror who was biased.” Davis v.
    Woodford, 
    384 F.3d 628
    , 643 (9th Cir. 2004). Ayala has not established
    AYALA V. CHAPPELL                              59
    B. Exclusion of deceased witness’s statements
    Ayala argues that the trial court violated his constitutional
    right to present a defense when it excluded under California’s
    hearsay rules the exculpatory statements of a deceased
    witness, Arthur Castro.24
    During trial, Ayala moved to admit statements that Castro
    made to defense investigator Bill Papenhausen. The defense
    proffered Papenhausen to testify that Castro heard two people
    arguing in Spanish with Dominguez about a large sum of
    money on the day before the murders, and that Castro later
    saw “three males driving away in a large car with blue and
    white Mexican plates.” The trial court denied Ayala’s motion
    to admit Papenhausen’s testimony under California’s residual
    hearsay rule. See Ayala, 
    1 P.3d at
    28–29. The California
    Supreme Court affirmed this ruling on direct review, see 
    id.
    at 27–30, and the district court denied federal habeas relief.
    Chambers v. Mississippi, 
    410 U.S. 284
     (1973), is the
    applicable “clearly established Federal law.” See 
    28 U.S.C. § 2254
    (d)(1). In Chambers, the Supreme Court held that a
    state court may not prohibit a defendant from presenting
    directly exculpatory evidence when the evidence is essential
    to the defendant’s case and bears sufficient indicia of
    reliability. See 
    410 U.S. at
    300–01. The facts in Chambers
    were extreme: After police officers arrested Leon Chambers
    for murder, his friend, Gable McDonald, confessed to three
    different people that he, not Chambers, committed the crime.
    that juror Cosgrove was biased, so he cannot satisfy Strickland’s prejudice
    prong under AEDPA’s deferential standard.
    24
    This argument corresponds to claim 44.
    60                   AYALA V. CHAPPELL
    
    Id.
     at 288–89. The trial court prohibited Chambers from
    presenting the testimony of these three witnesses under a
    Mississippi common-law evidentiary rule. 
    Id. at 289
    .
    Without this evidence, the jury convicted Chambers of
    murder. 
    Id. at 285
    . The Supreme Court reversed the
    conviction, holding “the exclusion of this critical evidence . . .
    denied [Chambers] a trial in accord with traditional and
    fundamental standards of due process.” 
    Id. at 302
    . The Court
    rejected Mississippi’s argument that McDonald’s prior
    confessions were hearsay and therefore unreliable because the
    confessions bore substantial indicia of reliability: they were
    against McDonald’s penal interest, corroborated by other
    evidence, spontaneous, and McDonald was available for
    cross-examination. 
    Id.
     at 300–01.
    Fairminded jurists could disagree about whether the
    California Supreme Court’s resolution of this claim was
    contrary to or an unreasonable application of Chambers. See
    Bemore, 788 F.3d at 1160 (discussing AEDPA’s deferential
    standard). Evidence falls within Chambers’s admissibility
    rule only when its exclusion “significantly undermine[s]
    fundamental elements of the defendant’s defense.” United
    States v. Scheffer, 
    523 U.S. 303
    , 315 (1998). Here, while
    Castro’s account of three Mexican men at the body shop
    supported defendant’s theory of the case, it was not directly
    exculpatory like the confession in Chambers. See 
    410 U.S. at 297
     (trial court’s ruling effectively prevented Chambers
    “from exploring the circumstances of McDonald’s three prior
    oral confessions”); see also Scheffer, 
    523 U.S. at 316
    (observing that “Chambers specifically confined its holding
    to the ‘facts and circumstances’ presented in that case”).
    Also, Castro’s statement had fewer indicia of reliability than
    the statement in Chambers because Castro told his story to a
    defense investigator who was assisting with trial preparation,
    AYALA V. CHAPPELL                            61
    not “spontaneously to a close acquaintance.” Chambers,
    
    410 U.S. at 300
    . Although Castro did inculpate himself by
    admitting to heroin use, this statement was much less
    inculpatory than the one at issue in Chambers, where the
    declarant admitted to murder. 
    Id.
     at 300–01. Finally, unlike
    the declarant in Chambers, Castro was not available for cross-
    examination. 
    Id. at 301
    . The California court reached these
    same conclusions in its review of this claim. Ayala, 
    1 P.3d at
    29–30. We cannot say that its decision was unreasonable, so
    Ayala is not entitled to habeas relief. Andrews, 798 F.3d at
    773 (“When a state court may draw a principled distinction
    between the case before it and Supreme Court caselaw,”
    federal habeas relief is not available).
    C. Prosecutorial misconduct during closing arguments
    In his closing arguments, the prosecutor told the jury that
    several witnesses, including Meza, Castillo, Rafa, and
    Eduardo “Lalo” Sanchez,25 made inconsistent statements
    because they were afraid of Ayala and “those people who
    associated with the defendant.” Ayala, 
    1 P.3d at 40
    . Ayala
    argues that this and other similar statements in the
    prosecutor’s closing argument violated his constitutional
    rights “because the prosecution improperly attempted to
    inject gang issues into the trial.”26 He separately argues that
    trial counsel was ineffective for failing to object to the
    25
    Sanchez lived next door to the body shop and was one of the State’s
    trial witnesses. To the apparent surprise of the prosecutor, Sanchez
    testified that he heard nothing on the night of the murders.
    26
    This argument corresponds to claim 7.
    62                      AYALA V. CHAPPELL
    allegedly improper statements.27 The California Supreme
    Court dismissed these arguments on direct review, see Ayala,
    
    1 P.3d at
    34–35, 40–41, and the district court denied federal
    habeas relief.
    Darden v. Wainwright, 
    477 U.S. 168
     (1986), is the
    relevant clearly established federal law. In Darden the Court
    “explained that a prosecutor’s improper comments will be
    held to violate the Constitution only if they ‘so infected the
    trial with unfairness as to make the resulting conviction a
    denial of due process.’” Parker v. Matthews, 
    132 S. Ct. 2148
    ,
    2153 (2012) (quoting Darden, 447 U.S. at 181). Darden
    creates a “general” standard, giving state courts “more
    leeway” to apply it. Id. at 2155 (quoting Yarborough v.
    Alvarado, 
    541 U.S. 652
    , 664 (2004)).
    The California Supreme Court’s rejection of Ayala’s
    misconduct claim was not an unreasonable application of
    Darden because the prosecutor’s statements that several
    witnesses feared Ayala were reasonably drawn from the
    witnesses’ testimony. See Trillo v. Biter, 
    769 F.3d 995
    , 1002
    (9th Cir. 2014) (prosecutors are entitled to make reasonable
    inferences from the facts). Castillo told the jury that he “had
    worries, concern for my family. There was just three people
    shot, and I was shot and almost killed. . . . There was some
    people out there that actually kill people.” Rafa told the jury
    that he originally testified for Ayala in part because “I was
    afraid that if I, you know, didn’t want to cooperate with them
    . . . I might, you know, get killed or something.” Meza
    likewise explained that, although he helped plan the 43rd
    Street robbery, he did not participate because he feared the
    Ayalas would use the opportunity to kill him.
    27
    This argument corresponds to claim 26.
    AYALA V. CHAPPELL                       63
    Also, the prosecutor’s closing argument adhered to the
    trial court’s order concerning the admissibility of gang
    affiliation evidence. He did not mention gangs, the Mexican
    Mafia, or the EME, but instead argued that witnesses were
    afraid of “what the defendant stood for” and “those with
    whom the defendant associates.” The jury could have
    understood these statements to mean that Ayala was a gang
    member, but it also could have understood them to mean that
    witnesses feared Ayala simply because he had been accused
    of triple murder. The prosecutor’s comments about fear and
    association were not so prejudicial that they undermined the
    fundamental fairness of Ayala’s trial. “Indeed, Darden itself
    held that a closing argument considerably more inflammatory
    than the one at issue here did not warrant habeas relief.”
    Parker, 
    132 S. Ct. at 2155
    ; Darden, 
    477 U.S. at
    180 nn.9–11.
    Habeas relief is not warranted on this claim.
    Nor was it unreasonable for the California Supreme Court
    to reject Ayala’s related IAC claim. Counsel “was not
    constitutionally ineffective for failing to object to the
    prosecutorial statements . . . [because t]hose statements were
    based on reasonable inferences from the record.” See Trillo,
    769 F.3d at 1002; see also Cunningham v. Wong, 
    704 F.3d 1143
    , 1159 (9th Cir. 2013) (“[A]bsent egregious
    misstatements, the failure to object during closing argument
    and opening statement is within the ‘wide range’ of
    permissible professional legal conduct.” (quoting United
    States v. Necoechea, 
    986 F.2d 1273
    , 1281 (9th Cir. 1993))).
    D. Penalty-phase admission of the John Casas murder
    In the penalty phase, the trial court permitted the State to
    submit evidence that, nearly ten years before trial, Ayala
    murdered an inmate named John Casas while the two were
    64                       AYALA V. CHAPPELL
    incarcerated together.28 Ayala argues this was constitutional
    error because the state never charged him with this crime and
    “[t]he extensive pre-trial delay in prosecuting Ayala for the
    alleged Casas murder led to Ayala’s demonstrable inability to
    present exculpatory evidence which would have and should
    have exonerated him had the allegations been timely
    brought.”
    Habeas relief is not warranted on this claim because
    Ayala has not shown he suffered prejudice from the
    government’s delay in holding him accountable for the Casas
    murder. See United States v. Lovasco, 
    431 U.S. 783
    , 784,
    795–96 (1977) (a due process claim based on “a delay
    between the commission of an offense and the initiation of
    prosecution” requires defendant to establish prejudice and
    fault on the part of the government). Ayala claims he
    suffered prejudice because he “lost” an exculpatory witness
    during the eight years that passed between the Casas murder
    and the penalty phase of his trial. According to Ayala, this
    witness would have testified that he saw another inmate with
    a knife “about ten minutes before the [Casas] stabbing.” But
    this account is not suggestive of Ayala’s innocence,
    particularly when set against the State’s two witnesses, both
    of whom testified that they saw Ayala stab Casas. Ayala’s
    inability to show prejudice from this delay is fatal to his due
    process claim. 
    Id.
    28
    This argument corresponds to claim 39. Ayala presented this
    argument to the California Supreme Court on direct review, the California
    court rejected it, Ayala, 
    1 P.3d at 49
    , and the district court denied federal
    habeas relief.
    AYALA V. CHAPPELL                     65
    VII.      Cumulative error
    Ayala next argues that the cumulative impact of his
    lawyers’ deficiencies, the State’s Brady violations, Detective
    Chacon’s intimidation of witnesses, and the trial court’s
    errors requires reversal of his conviction.29 We have
    previously recognized that “[a]lthough individual errors may
    not rise to the level of a constitutional violation, a collection
    of errors might violate a defendant’s constitutional rights.”
    Woods, 764 F.3d at 1139 (quoting Davis, 
    384 F.3d at 654
    ).
    Here, we do not agree that Ayala has suffered such prejudice.
    Any errors made by trial counsel, the trial court, or the
    government in Ayala’s case were minor and “did not render
    [Ayala’s] trial fundamentally unfair.” See Davis, 
    384 F.3d at 654
    . Further, if Ayala suffered any injustice at trial, it was
    rectified by the district court’s thorough handling of his
    federal habeas petition. The district court’s evidentiary
    hearing spanned twenty days and thoroughly aired Ayala’s
    most meritorious claims (an opportunity most federal habeas
    petitioners are denied post-Pinholster). During this hearing,
    the court took testimony from former witnesses, counsel, and
    investigators on Ayala’s case and admitted dozens of
    exhibits. The experienced district judge painstakingly
    reviewed Ayala’s evidence, and was convinced that Ayala’s
    conviction and sentence were not the product of an unfair
    trial. We agree with Judge Moskowitz’s conclusion.
    29
    This argument corresponds to claim 2.
    66                     AYALA V. CHAPPELL
    VIII. Actual innocence
    Ayala’s final claim is that he is actually innocent of these
    murders.30 The Supreme Court has assumed that a
    freestanding innocence claim is cognizable on federal habeas
    review, but it has noted that “the threshold showing for such
    an assumed right would necessarily be extraordinarily high.”
    Herrera v. Collins, 
    506 U.S. 390
    , 417 (1993). Ayala does not
    meet this high threshold of proof. Neither the evidence
    before the state court nor the evidence adduced at the 2010
    evidentiary hearing supports Ayala’s contention that key
    witnesses against him lied at the behest of the government.
    Nor does the record support Ayala’s claim that the
    prosecution withheld essential evidence about Meza’s
    immunity agreement or relationship with Detective Chacon.
    The evidence Ayala introduced in 2010 to support his habeas
    petition is much less compelling than that submitted by the
    petitioner in Herrera. See 
    id.
     at 396–98 (denying Herrera’s
    actual innocence claim even though several individuals,
    including one eyewitness, submitted affidavits claiming that
    Herrera’s brother committed the murders for which Herrera
    had been convicted). The Supreme Court’s denial of
    Herrera’s freestanding innocence claim urges the same result
    here, and the California court’s dismissal of this claim was
    therefore not unreasonable. See 
    28 U.S.C. § 2254
    (d)(1).
    30
    This argument corresponds to claim 1. Ayala presented this claim in
    his Exhaustion Petition, the California Supreme Court summarily denied
    it, and the district court denied relief.
    AYALA V. CHAPPELL                     67
    CONCLUSION
    For the foregoing reasons, we affirm the district court’s
    denial of Ayala’s petition for writ of habeas corpus.
    AFFIRMED.