Diaz v. Quarterman ( 2007 )


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  •                                                        United States Court of Appeals
    Fifth Circuit
    F I L E D
    UNITED STATES COURT OF APPEALS
    for the Fifth Circuit                 April 11, 2007
    Charles R. Fulbruge III
    Clerk
    No. 05-70057
    ARTURO DIAZ,
    Petitioner-Appellant,
    VERSUS
    NATHANIEL QUARTERMAN, DIRECTOR,
    TEXAS DEPARTMENT OF CRIMINAL JUSTICE,
    CORRECTIONAL INSTITUTIONS DIVISION,
    Respondent-Appellee.
    Appeal from the United States District Court
    for the Southern District of Texas
    (7:04-CV-00225)
    Before JONES, Chief Judge, and WIENER and DeMOSS, Circuit Judges.
    PER CURIAM:*
    Petitioner Arturo Diaz was convicted in Texas state court of
    capital murder and sentenced to death. He comes before this Court
    to request a Certificate of Appealability (“COA”) to appeal the
    district court’s denial of federal habeas relief. For the reasons
    stated below, we grant Diaz’s request in part and deny it in part.
    *
    Pursuant to 5TH CIR. R. 47.5, the Court has determined that this
    opinion should not be published and is not precedent except under
    the limited circumstances set forth in 5TH CIR. R. 47.5.4.
    I. Background
    In February 2000, Diaz was convicted in Texas state court of
    the capital murder of Michael Ryan Nichols. He was sentenced to
    death. The facts stated below are taken from the opinion of the
    Texas Court of Criminal Appeals (“TCCA”) on direct appeal and the
    report and recommendation of the magistrate judge as adopted by the
    district court on federal habeas review.
    On April 1, 1999, Nichols was in McAllen, Texas on business.
    That night, the night before he was murdered, Nichols went out with
    an exotic dancer named Danielle Thomas who performed exotic dances
    at parties and private dances. While they were out, a teller
    machine destroyed Nichols’ bank card and Thomas loaned him $100.
    When the    nightclubs   closed   at       2:00    a.m.,   Nichols   and   Thomas
    returned to Thomas’ trailer, where they met up with Diaz and a
    woman named Arcelia Reyes. The four watched movies until 4:00 or
    5:00 a.m., when Thomas and Reyes, who provided security for Thomas,
    borrowed Nichols’ truck to go to a motel so Thomas could dance.
    Reyes returned the truck to Nichols before the dance ended. Thomas
    called the trailer several times during the day, speaking sometimes
    to Diaz and sometimes to Nichols. When Thomas and Reyes returned to
    the trailer at 8:00 p.m. on April 2, the two men had left.
    John    Shepherd,   a   coworker         of    Nichols    who    shared   a
    company-owned apartment in McAllen with him, later testified that
    Nichols, Diaz, and a man named Joe Cordova arrived at the McAllen
    apartment between 6:00 and 7:00 p.m. on April 2. Shepherd felt
    2
    uncomfortable around Nichols’ companions. He noticed that Diaz had
    tattoos on his forearms. Shepherd left to buy beer and cigarettes.
    When he returned, he noticed that Nichols’ truck was in the center
    of the parking lot, a fact that would become important later.
    Nichols, Diaz, and Cordova were watching television in the living
    room. Shepherd went to bed.
    While Shepherd was in bed, Thomas and Reyes stopped by the
    apartment. Thomas testified that she had come to recover the $100
    she had lent to Nichols on April 1. She saw that Nichols had two
    fifty dollar bills in his wallet. He gave her one and kept the
    other. After the murder, the second fifty dollar bill was not found
    in Nichols’ wallet, or anywhere else for that matter. Instead, a
    piece of paper with Diaz’s telephone number and first name were
    found in Nichols’ wallet.
    Later that night, Shepherd was awakened by a loud noise. He
    went to the living room and found Nichols bleeding from a wound in
    his arm. Diaz was holding a large butcher knife. After Shepherd
    asked three times “What’s going on?,” Nichols said, “Do what he
    says, get the money and they’ll leave.” Cordova said some things in
    Spanish and in English about Shepherd getting money; and Diaz spoke
    angrily in Spanish. Diaz then grabbed Shepherd’s shirt and pushed
    him down the hall to his room. Shepherd got some cash from his
    pants pocket and gave it to Diaz. Diaz checked the pants for more
    money, then grabbed Shepherd’s shirt and led him back to the living
    room. Cordova told Shepherd to sit on the couch and do what he was
    3
    told. Diaz and Cordova subsequently put Nichols on the floor and
    bound and gagged him with shoelaces and strips of bedding.
    The phone rang, and Cordova answered it. Shepherd later
    testified that Cordova told the caller to “‘come to get us, or come
    over here,’ something like that . . . . Pretty quick there was a
    knock on the door.” Thomas testified that Reyes had received a
    phone call around midnight and that she had borrowed Thomas’ car
    and left for about forty-five minutes. Consistent with Thomas’
    testimony, Shepherd testified that a large Hispanic woman arrived
    at the apartment shortly after the phone call. The woman asked
    Cordova and Diaz what was going on, and Cordova told her something
    in Spanish. Shepherd testified that the woman did not look happy
    with Cordova’s response. Cordova told the woman to face the door,
    and he told Shepherd not to look at her.
    Diaz and Cordova beat Nichols. They put Shepherd on the floor
    and bound and gagged him, then returned their attention to Nichols.
    Cordova lifted Nichols up and held him while Diaz stabbed Nichols
    in the torso numerous times. An autopsy revealed perforations of
    Nichols’ liver, kidney, lungs, and heart. A knife thrust had
    fractured a rib and broken off the tip of the knife, which remained
    in the rib. The autopsy also revealed lacerations to Nichols’
    scalp, neck, and flanks.
    When Cordova noticed that Shepherd had freed one of his hands,
    he and Diaz beat Shepherd and stabbed him. Shepherd pretended to be
    dead and lost consciousness.
    4
    Diaz and a man known to Thomas as “Danny” arrived at Thomas’
    trailer at 3:00 a.m. on April 3. They were very nervous and in a
    hurry to leave. When Reyes returned, Thomas noted that she was very
    upset.
    When Shepherd awoke, the apartment was dark. The evidence
    indicates that it was between 3:00 and 4:00 a.m. Shepherd freed
    himself from his bindings and left the apartment. He noticed
    Nichols’ truck at the apartment gate with the driver's door open.
    At Shepherd’s request, a neighbor called the police.
    When the police arrived at the apartment complex, they found
    the gate locked and Nichols’ truck parked next to the keypad               box
    inside the gate. There was blood in the truck, bedding material on
    the ground, and a footprint on top of the keypad box that was later
    found    to   match   Diaz’s   shoe.   Nichols   was   found   dead   in   the
    apartment; a beer bottle with Diaz’s DNA on it was found on the
    floor next to him.
    A man named Manuel Montes later testified that Cordova phoned
    him at about 4:00 a.m. on April 3 and asked Montes to pick him up
    from another neighborhood. Cordova was Montes’ neighbor and the
    older brother of Montes’ best friend. Montes picked up Cordova,
    Diaz, and a large woman and took them over to his house. Cordova
    had a bloody shirt wrapped around his arm, and when he was
    arrested, wounds were discovered on his arms and thigh.
    After daylight, Cordova borrowed a pair of Montes’ pants so
    that he could go home and get pants for himself and Diaz. After
    5
    Cordova and Diaz changed clothes, Cordova told Montes he would take
    care of   the    trash   bag,   which       presumably   contained     the   dirty
    clothes. Police later found a trash bag of clothing in Montes’
    home; the clothing was stained with Cordova’s and Nichols’ blood.
    Montes also testified that he overheard Diaz telling some
    other men, in Cordova’s presence, about a murder. According to this
    testimony, Cordova held the man, and Diaz stabbed him.
    The defense presented no witnesses during the guilt-innocence
    phase of trial. Instead, counsel argued that Diaz was not guilty of
    capital murder because the State had failed to prove that the
    murder occurred during the commission or attempted commission of a
    robbery. The jury found Diaz guilty of the capital murder of
    Nichols. They also found him guilty of the attempted capital murder
    of Shepherd and of aggravated robbery.
    During     the   penalty   phase   of     trial,    the   State   presented
    evidence that Diaz had engaged in misconduct while in the county
    jail; that his misconduct included fighting and refusing to go to
    court; that deputies had caught Diaz trying to dig a hole through
    the wall of his cell; that Diaz was housed in a unit used to hold
    members of the Pistoleros gang; and that Diaz had committed other
    assaults and homicides. Dr. John Edward Pinkerman, a psychologist,
    testified for Diaz. Prior to testifying, Dr. Pinkerman met with
    Diaz twice to conduct a psychological evaluation. He documented his
    findings in a written report. According to Dr. Pinkerman, Diaz’s
    past medical history included head trauma from being knocked
    6
    unconscious during fights and a head injury suffered in a car
    accident. Dr. Pinkerman indicated that Diaz’s history of head
    trauma could        impair   his   ability    to    control   and    regulate   his
    judgment      and    perceive      reality;    that    Diaz    has    low-average
    intelligence and the verbal ability of an eleven-year old; that
    Diaz is prone to feeling guilty and might act out to incur
    punishment; and that Diaz has a history of antisocial behavior as
    a child that correlates with a high probability of adult criminal
    behavior.
    Over defense’s objection, the State introduced Dr. Pinkerman’s
    written report into evidence. The report included Dr. Pinkerman’s
    conclusion that Diaz “approached the assessment in somewhat of an
    exaggerated manner which may reflect an inability to cooperate with
    the testing or malingering in an attempt to present himself with
    the false claim of mental illness”; that Diaz was not mentally ill;
    and that Diaz’s profile matches that of Type C offenders, which Dr.
    Pinkerman described as the most difficult criminal offenders --
    those who are distrustful, cold, irresponsible, and unstable. Also,
    on cross, Dr. Pinkerman testified that Diaz had refused to discuss
    the facts of the offense with him on the advice of Diaz’s attorney.
    After   Dr.    Pinkerman     testified,       the   defense   called    no   other
    witnesses.
    During closing arguments, the defense reiterated its earlier
    argument, advanced during the guilt-innocence phase of trial, that
    Diaz was not guilty of capital murder because the evidence did not
    7
    show that the murder occurred during the commission or attempted
    commission of a robbery. The prosecutor, in turn, urged the jury
    that Diaz was not like them and that they had “a duty to protect
    the people of [the] county.” The jury found that there was a
    probability that Diaz would commit criminal acts of violence that
    would constitute a continuing threat to society; that Diaz actually
    killed or intended to kill Nichols, or anticipated that human life
    would be taken; and that there was not sufficient mitigating
    evidence to justify the imposition of a life sentence instead of
    death. The trial court accordingly sentenced Diaz to death on the
    capital murder charge. It sentenced Diaz to life in prison on the
    attempted capital murder and aggravated robbery charges.
    The Texas Court of Criminal Appeals affirmed Diaz’s conviction
    and sentence and later denied Diaz’s application for state habeas
    relief. On June 16, 2004, Diaz filed a federal habeas petition in
    the U.S. District Court for the Southern District of Texas. He made
    four claims:
    (1) that trial counsel rendered ineffective assistance
    with respect to the guilt-innocence phase of trial by
    failing to adequately investigate the State’s case and
    fully discuss it with Diaz to ensure his plea of not
    guilty was knowing and voluntary;
    (2) that trial counsel rendered ineffective assistance
    with respect to the punishment phase of trial by (a)
    failing to adequately investigate and present readily
    available mitigating evidence, (b) failing to prepare the
    only witness offered, and (c) devoting almost their
    entire closing argument to a defensive theory that the
    jury had rejected during the guilt-innocence phase of
    trial;
    8
    (3) that the trial court deprived Diaz of a fair trial by
    admitting evidence of gang membership; and
    (4) that the prosecutor infringed on Diaz’s right to
    remain silent by eliciting testimony that Diaz had
    refused to discuss the offense with his own mental health
    expert.
    On December 10, 2004, Diaz amended his petition with the State’s
    permission. He added two new claims:
    (5) that trial counsel rendered ineffective assistance
    during voir dire by failing to object to the exclusion of
    venire member Gerald Albrecht, and
    (6)   that  appellate   counsel  rendered   ineffective
    assistance by not appealing the prosecutor’s closing
    statements that alluded to community expectations.
    The State moved for summary judgment. The magistrate judge filed a
    report and recommendation recommending that the court grant the
    State’s motion for summary judgment, dismiss Diaz’s habeas petition
    with prejudice, and deny Diaz a COA. Specifically, the magistrate
    found that Diaz’s first claim and the last two parts of his second
    claim were unexhausted and therefore procedurally barred. Further,
    the magistrate found that Diaz’s fifth and sixth claims were added
    to his habeas petition after the limitations period had expired;
    however, she ultimately recommended denial on the merits after
    determining that both claims were subject to equitable tolling.
    Finally, the magistrate concluded that Diaz was not entitled to
    relief on the exhausted portion of his second claim or on his third
    or fourth claims. The court adopted the magistrate judge’s report
    and recommendation, dismissed Diaz’s petition with prejudice, and
    stated that a COA would not issue. Diaz requests a COA from this
    9
    Court.
    II. Discussion
    Diaz filed his federal habeas petition after the effective
    date of the Antiterrorism and Effective Death Penalty Act (AEDPA).
    Accordingly, his petition is subject to AEDPA’s requirements. Lindh
    v. Murphy, 
    521 U.S. 320
    , 336 (1997). Under AEDPA, a petitioner must
    apply for and obtain a COA before appealing a district court’s
    denial of habeas relief. 28 U.S.C. § 2253(c); see also Miller-El v.
    Cockrell, 
    537 U.S. 322
    , 335-36 (2003). The district court denied
    Diaz’s request for a COA; therefore, his only alternative is to
    obtain a COA from this Court. 28 U.S.C. § 2253(c); see also Coleman
    v. Quarterman, 
    456 F.3d 537
    , 541 (5th Cir. 2006).
    To obtain a COA, an applicant must make “a substantial showing
    of the denial of a constitutional right,” 28 U.S.C. § 2253(c)(2);
    
    Miller-El, 537 U.S. at 336
    ,   and   to   meet   this   standard,   the
    applicant must demonstrate that “‘reasonable jurists could debate
    whether (or, for that matter, agree that) the petition should have
    been resolved in a different manner or that the issues presented
    were “adequate to deserve encouragement to proceed further,”’”
    
    Miller-El, 537 U.S. at 336
    (quoting Slack v. McDaniel, 
    529 U.S. 473
    , 484 (2000) (quoting Barefoot v. Estelle, 
    463 U.S. 880
    , 894 n.4
    (1983))). We recognize that the inquiry in which this Court must
    engage “is a threshold inquiry only, and does not require full
    consideration of the factual and legal bases of [the petitioner’s]
    10
    claim[s].” Neville v. Dretke, 
    423 F.3d 474
    , 482 (5th Cir. 2005)
    (citing 
    Miller-El, 537 U.S. at 336
    ). We will issue a COA if Diaz
    can demonstrate that “the [d]istrict [c]ourt’s application of AEDPA
    to [his] constitutional claims . . . was debatable among jurists of
    reason.” 
    Miller-El, 537 U.S. at 336
    . A claim can be debatable “even
    though every jurist of reason might agree, after the COA has been
    granted   and    the    case       has   received      full   consideration,        that
    petitioner      will   not       prevail.”     
    Id. at 338.
      Because    Diaz    was
    sentenced to death, “we must resolve any doubts as to whether a COA
    should issue in his favor.” Martinez v. Dretke, 
    404 F.3d 878
    , 884
    (5th Cir. 2005).
    In evaluating the district court’s application of AEDPA to
    Diaz’s claims, we keep in mind the standard of review imposed by
    AEDPA on the district court. First,
    A district court may grant habeas relief only if it
    determines that the state court’s adjudication “resulted
    in a decision that was contrary to, or involved an
    unreasonable application of, clearly established Federal
    law, as determined by the Supreme Court” or “in a
    decision that was based on an unreasonable determination
    of the facts in light of the evidence presented in the
    State court proceeding.”
    Leal v. Dretke, 
    428 F.3d 543
    , 548 (5th Cir. 2005) (quoting 28
    U.S.C. § 2254(d)(1), (2)). Second, “a determination of a factual
    issue made by [the] State court shall be presumed to be correct”
    unless    the    petitioner        rebuts      the    presumption    by     clear    and
    convincing evidence. 28 U.S.C. § 2254(e)(1).
    Diaz    requests        a    COA    on   seven    issues:    (1)   whether     the
    11
    ineffective assistance of state habeas counsel is sufficient cause
    to warrant review of a procedurally barred claim; (2) whether trial
    counsel rendered ineffective assistance with respect to the guilt-
    innocence phase of trial by failing to adequately investigate the
    State’s case and fully discuss it with Diaz to ensure his plea of
    not guilty was knowing and voluntary; (3) whether trial counsel
    rendered ineffective assistance with respect to the punishment
    phase of trial by (a) failing to adequately investigate and present
    readily available mitigating evidence, (b) failing to prepare the
    only witness offered, and (c) devoting almost their entire closing
    argument to a defensive theory that the jury had rejected during
    the guilt-innocence phase of trial; (4) whether the trial court
    deprived Diaz of a fair trial by admitting evidence of gang
    membership; (5) whether the prosecutor infringed on Diaz’s right to
    remain silent by eliciting testimony that Diaz had refused to
    discuss the offense with his own mental health expert; (6) whether
    trial counsel rendered ineffective assistance during voir dire by
    failing   to   object   to   the   exclusion   of   venire   member   Gerald
    Albrecht; and (7) whether appellate counsel rendered ineffective
    assistance by not appealing the prosecutor’s closing statements
    that alluded to community expectations.
    As an initial housekeeping matter, we note that Issue 1 --
    whether the ineffective assistance of state habeas counsel is
    sufficient cause to warrant review of a procedurally barred claim
    -- does not embody a separate ground for relief, that is, “it is
    12
    not an issue that raises ‘a substantial showing of the denial of a
    constitutional right.’” Busby v. Dretke, 
    359 F.3d 708
    , 713 n.3 (5th
    Cir. 2004) (quoting 28 U.S.C. § 2253(c)(2)). Rather, it is an issue
    that Diaz raises only to promote review of his procedurally barred
    claims. Accordingly, we will address it only to the extent that it
    impacts those claims.1
    Further, based on our limited, threshold inquiry and general
    assessment of the merits of the remaining issues, we conclude that
    Issue   3(a)   presents   an   issue    that   is   adequate   to   deserve
    encouragement to proceed further, that is, whether trial counsel
    rendered ineffective assistance with respect to the punishment
    phase of trial by failing to adequately investigate and present
    readily available mitigating evidence. Accordingly, we grant a COA
    as to this issue. If Diaz wishes to file a supplemental brief with
    respect to the merits of this issue, he may do so within thirty
    days of the date of this order. The supplemental brief should only
    address matters that have not already been covered in the brief in
    support of the COA application. The State may file a response
    fifteen days thereafter.
    We now proceed to address the remaining issues in turn,
    grouping like issues for readability.
    1
    The Government contends that we should not address this issue
    at all because it was not raised before the district court;
    however, the record shows that Diaz argued ineffective assistance
    as cause for default in his response to the Government’s motion for
    summary judgment.
    13
    A. Ineffective Assistance of Counsel
    Diaz presents five ineffective assistance of counsel claims
    (Issues 2, 3(b), 3(c), 6, and 7). The district court, in adopting
    the magistrate’s report and recommendation, ruled that Issues 2,
    3(b), and 3(c) were unexhausted and therefore procedurally barred.
    Finding no cause for the procedural default, the court did not
    address their merits. The court then addressed the merits of Issues
    6 and 7 and found that neither provided grounds for habeas relief.
    Diaz finds error with the district court’s procedural rulings and
    with its conclusion that he is not entitled to relief with respect
    to Issues 6 or 7.
    We review procedural rulings resulting in the denial of habeas
    relief under the standard set forth in Slack v. McDaniel, 
    529 U.S. 473
    (2000):
    When the district court denies a habeas petition on
    procedural grounds without reaching the prisoner’s
    underlying constitutional claim, a COA should issue when
    the prisoner shows, at least, that jurists of reason
    would find it debatable whether the petition states a
    valid claim of the denial of a constitutional right and
    that jurists of reason would find it debatable whether
    the district court was correct in its procedural 
    ruling. 529 U.S. at 484
    . With respect to Issue 2, we find that reasonable
    jurists could not debate the district court’s procedural ruling,
    and we decline to issue a COA as to that claim. We do not consider
    the district court’s procedural ruling as to Issues 3(b) and (c),
    however, because we find that reasonable jurists could not debate
    whether they state a valid claim of the denial of a constitutional
    14
    right. We address Issue 2 first and then address Issues 3(b) and
    (c) alongside the remaining ineffective assistance claims.
    1.
    Under AEDPA, a petitioner must exhaust his claims in state
    court before presenting them to a federal court for review. See 28
    U.S.C. § 2254(b)(1)(A). To exhaust his claims, a petitioner must
    “fairly present” their substance to the state court. Ruiz v.
    Quarterman, 
    460 F.3d 638
    , 643 (5th Cir. 2006) (citing Picard v.
    Connor, 
    404 U.S. 270
    , 275 (1971)). If the court to which the
    petitioner would be required to present his unexhausted claims
    would now find the claims procedurally barred, the petitioner has
    procedurally defaulted his claims and we are barred from reviewing
    them. 
    Id. (citing Coleman
    v. Thompson, 
    501 U.S. 722
    , 735 n.1
    (1991)). The failure to exhaust may be excused if the petitioner
    can demonstrate cause for the default and actual prejudice, or that
    application of the procedural bar would result in a “fundamental
    miscarriage of justice.” 
    Id. (citing Coleman
    , 501 U.S. at 750).
    Diaz concedes that he failed to exhaust Issue 2. However, he
    argues that state habeas counsel were responsible for this failure
    and that the ineffective assistance of state habeas counsel can
    constitute cause for procedural default. The district court did not
    address whether the ineffective assistance of state habeas counsel
    can constitute cause for procedural default. However, the law is
    settled that it cannot. See Elizalde v. Dretke, 
    362 F.3d 323
    , 328-
    15
    30 (5th Cir. 2004). A defendant does not have a constitutional
    right to the assistance of counsel in state habeas proceedings, so
    he cannot blame state habeas counsel for any procedural default
    that occurs therein. See 
    id. Because Diaz
    has offered no other
    cause for his default nor attempted to demonstrate that application
    of the procedural bar would result in a fundamental miscarriage of
    justice, reasonable jurists could not debate the district court’s
    ruling that Issue 2, which was concededly unexhausted, was not
    subject to review.2
    2.
    Moving on to the merits of Issues 3(b), 3(c), 6, and 7,3 we
    start by setting out the applicable law: A criminal defendant has
    a right to counsel under the Sixth Amendment, and the right to
    counsel entails the right to effective assistance of counsel.
    2
    Diaz attempts for the first time here to make a new argument
    that incompetent, as opposed to ineffective, state habeas counsel
    can be held responsible for procedural default because Texas
    promises a defendant competent counsel. He did not make this
    argument before the district court, and we will not consider it
    here. See Roberts v. Cockrell, 
    319 F.3d 690
    , 695 (5th Cir. 2003).
    3
    The State contends that a COA should not issue as to either
    Issue 6 or Issue 7 because both were added to Diaz’s habeas
    petition after the statute of limitations had run. The district
    court, in adopting the magistrate’s report and recommendation,
    ruled that Diaz was entitled to equitable tolling as to both claims
    because at the time Diaz’s original petition was filed, the State
    consented to Diaz filing an amended petition outside the
    limitations period. We find no fault with the court’s decision not
    to apply the limitations bar to Issues 6 and 7; however, we note
    that waiver is the more appropriate justification for the court’s
    decision in this situation.
    16
    Strickland v. Washington, 
    466 U.S. 668
    , 684-86 (1984). To prove
    ineffective assistance of counsel under Strickland, a defendant
    must show (1) “that counsel’s performance was deficient,” and (2)
    “that the deficient performance prejudiced the defense.” 
    Id. at 687.
    A finding of deficient performance requires a showing that
    “‘counsel made errors so serious that counsel was not functioning
    as the “counsel” guaranteed the defendant by the Sixth Amendment,’”
    
    Leal, 428 F.3d at 548
    (quoting 
    Strickland, 466 U.S. at 687
    ), that
    is, petitioner must show that counsel’s performance fell below an
    objective standard of reasonableness, as measured by prevailing
    professional   norms,   
    Strickland, 466 U.S. at 688
    .   Deficient
    performance is prejudicial “only if, but for counsel’s errors,
    there is a reasonable probability that the final result would have
    been different and confidence in the reliability of the verdict has
    been undermined.” 
    Leal, 428 F.3d at 548
    (citing Little v. Johnson,
    
    162 F.3d 855
    , 860-61 (5th Cir. 1998)). Failure to prove either
    deficient performance or prejudice will defeat an ineffective
    assistance of counsel claim. 
    Id. Diaz claims
      that   his   trial   counsel      rendered   ineffective
    assistance with respect to the punishment phase of trial by failing
    to prepare the only witness offered and by devoting almost their
    entire closing argument to a defensive theory that the jury had
    rejected during the guilt-innocence phase of trial. The trial court
    did not reach the merits of these claims because it determined they
    17
    were   procedurally         barred;   however,     it   is   clear   to   us   that
    reasonable jurists could not debate whether Diaz stated a valid
    claim of the denial of a constitutional right as to either. As
    Diaz’s brief establishes, his complaints about counsel’s witness
    preparation and closing arguments are based on his underlying
    complaint that counsel did not adequately investigate or present
    available mitigating evidence. He contends that if counsel had
    properly prepared defense witness Dr. Pinkerman, they would have
    realized   that      they    needed   to    investigate      and   present     other
    mitigating evidence. Diaz also contends that counsel failed by
    relying solely on a rejected defensive theory during closing
    instead of presenting mitigating evidence. Assuming, arguendo, that
    counsel’s decision not to further investigate or present available
    mitigating evidence was reasonable,4 then failing to prepare Dr.
    Pinkerman and failing to address any mitigating evidence in closing
    cannot have been constitutionally flawed. Diaz has provided no
    additional ground for finding the witness preparation or closing
    argument   to   be    constitutionally          deficient,   and   therefore     the
    district court’s ruling is not debatable among reasonable jurists.
    Diaz also claims that his trial counsel rendered ineffective
    assistance during voir dire by failing to object to the exclusion
    of venire member Gerald Albrecht. Albrecht was excluded from the
    4
    We make this assumption because the reasonableness of counsel’s
    decision not to further investigate or present mitigating evidence
    is the subject of another claim, with respect to which we have
    granted Diaz a COA.
    18
    jury panel after he stated that his religious beliefs would cause
    him to “lean against the death penalty” and that he could not “set
    [his] religious beliefs aside” to decide a case solely on the
    evidence without regard to his beliefs. The State moved for his
    exclusion for cause, and defense counsel joined its motion.
    Reasonable jurists could not debate the district court’s
    conclusion that trial counsel’s performance during voir dire was
    not ineffective. While a juror generally may not be challenged for
    cause based on his views about capital punishment, a juror whose
    views would prevent or substantially impair the performance of his
    duties as a juror may be. Adams v. Texas, 
    448 U.S. 38
    , 45 (1980).
    The Supreme Court has stated,
    The state of this case law leaves trial courts with the
    difficult task of distinguishing between prospective
    jurors whose opposition to capital punishment will not
    allow them to apply the law or view the facts impartially
    and jurors who, though opposed to capital punishment,
    will nevertheless conscientiously apply the law to the
    facts adduced at trial.
    Wainwright v. Witt, 
    469 U.S. 412
    , 421 (1985). Although Albrecht may
    have equivocated about his position on capital punishment, as Diaz
    contends, he ultimately said that his religious beliefs would cause
    him to lean against the death penalty and that he would not be able
    to set aside those beliefs to render a decision based on the
    evidence. For all intents and purposes, Albrecht stated that he
    would not be able to apply the law or view the facts impartially
    because of his religious beliefs. In light of these remarks, it was
    19
    not error for the trial court to dismiss Albrecht for cause and
    considering there was no error to preserve, it was not unreasonable
    for Diaz’s counsel not to object to a motion to exclude Albrecht.
    Accordingly, reasonable jurists could not debate the district
    court’s    conclusion      that    trial     counsel’s    performance      was   not
    ineffective.
    Finally, Diaz claims that his appellate counsel rendered
    ineffective assistance by not appealing the prosecutor’s closing
    statements that alluded to community expectations. During closing,
    the prosecutor told the jury members that they were there “as a
    duty to the community. You are acting as public servants to this
    community.” The prosecutor argued that Diaz “is not like you. You
    have a duty to protect the people of this county.” Defense counsel
    objected   to    the    prosecutor’s        statements    and   the   trial    court
    instructed the jury to disregard them; however, the court denied
    counsel’s motion for a mistrial. Appellate counsel did not appeal
    this decision.
    Reasonable jurists could not debate the district court’s
    conclusion       that     appellate     counsel’s        performance     was     not
    ineffective. The Supreme Court has recognized that one of appellate
    counsel’s core duties is to distinguish weak claims from strong
    claims and focus the court’s attention only on the strong claims on
    appeal.    See    Jones    v.     Barnes,    
    463 U.S. 745
    ,   751-52      (1983)
    (“Experienced advocates since time beyond memory have emphasized
    20
    the importance of winnowing out weaker arguments on appeal and
    focusing on one central issue if possible, or at most on a few key
    issues.”). In that vein, the Supreme Court has held that “appellate
    counsel who files a merits brief need not (and should not) raise
    every nonfrivolous claim, but rather may select from among them in
    order to maximize the likelihood of success on appeal.” Smith v.
    Robbins, 
    528 U.S. 259
    , 288 (2000). Further, the Court has indicated
    that although “it is still possible to bring a Strickland claim
    based on counsel’s failure to raise a particular claim, . . . it is
    difficult   to   demonstrate   that   counsel   was   incompetent.”   
    Id. “Generally, only
    when ignored issues are clearly stronger than
    those presented, will the presumption of effective assistance of
    counsel be overcome.” 
    Id. (quoting Gray
    v. Greer, 
    800 F.2d 644
    , 646
    (7th Cir. 1986)). In Diaz’s case, appellate counsel argued on
    appeal that the evidence was insufficient to support a conviction
    for capital murder; that the trial court had erroneously admitted
    hearsay evidence; that the trial court had erroneously admitted a
    note found in Diaz’s apartment, evidence of Diaz’s tattoos, and
    evidence of gang membership; that trial counsel were ineffective;
    and that the evidence was insufficient to support a death sentence.
    We cannot say that the claim regarding the prosecutor’s closing
    arguments was clearly stronger than any of the claims raised by
    appellate counsel. In fact, we think it was considerably weaker
    considering that the trial court instructed the jury to disregard
    21
    the offending comments. Accordingly, reasonable jurists could not
    debate the district court’s conclusion that appellate counsel’s
    performance was not ineffective. A COA will not issue as to Issues
    3(b), 3(c), 6, or 7.
    B. Evidence of Gang Membership
    Diaz argues that the trial court deprived him of a fair trial
    by admitting evidence of gang membership. The district court, in
    adopting the magistrate’s report and recommendation, ruled that
    Diaz’s First Amendment rights were violated by the admission of
    such evidence. However, it ultimately denied relief after finding
    that the trial court’s error was harmless. We must determine
    whether reasonable jurists could debate this determination.
    To   obtain   federal       habeas    relief   based   on    non-structural
    constitutional     error,    a    petitioner     must   show     not   only    that
    constitutional     error    occurred,      but   also   that     the   error   “had
    substantial and injurious effect or influence in determining the
    jury’s verdict.” Brecht v. Abrahamson, 
    507 U.S. 619
    , 623 (1993)
    (quoting Kotteakos v. United States, 
    328 U.S. 750
    , 776 (1946)). As
    the magistrate explained,
    the jury had substantial evidence of Diaz’[s] violent
    nature and his history of criminal violence, including
    violence while in jail, completely apart from any
    evidence of gang membership. In view of the particularly
    violent nature of the Nichols murder and the evidence of
    Diaz’[s] other acts of violence and misconduct, the
    evidence of Diaz’[s] gang membership did not have “a
    substantial and injurious effect or influence in
    determining the jury’s verdict.”
    22
    Diaz v. Dretke, No. M-04-225 (S.D. Tex. 2005) (magistrate judge’s
    report and recommendation). Having reviewed the evidence presented
    to the jury concerning Diaz’s criminal history and history of
    violence, we are persuaded that reasonable jurists could not debate
    that the trial court’s admission of evidence of gang membership was
    harmless. The jury had ample evidence of a history of crime and
    violence such that any mention of gang membership was harmless. A
    COA will not issue as to this claim.
    C. Right to Remain Silent
    Diaz argues that the prosecutor infringed on his right to
    remain silent by eliciting testimony that he had refused to discuss
    his offense with his own mental health expert. The record shows
    that on cross-examination, the prosecutor and Dr. Pinkerman, Diaz’s
    mental health expert, had the following exchange:
    Q. Did you talk to [Diaz] about the facts of his current
    incarceration?
    A. No, I did not.
    Q. [Diaz] told you that he didn’t want to talk about
    that; is that correct?
    A. That’s correct.
    Q. He told you that he had been advised by his attorneys
    not to talk about the facts of his current incarceration;
    is that right?
    A. That’s correct.
    The prosecutor made no other comment about Diaz’s choice not to
    discuss his offense with Dr. Pinkerman. The district court, in
    23
    adopting the magistrate’s report and recommendation, ruled that
    Diaz’s Fifth Amendment right to remain silent was not violated by
    this discourse.
    Reasonable jurists could not debate the district court’s
    determination. Under the Fifth Amendment, a criminal defendant has
    a right to remain silent post-arrest. Miranda v. Arizona, 
    384 U.S. 436
      (1966).   At    trial,   a    prosecutor   may   not   comment   on     the
    defendant’s choice to exercise that right. See, e.g., Doyle v.
    Ohio, 
    426 U.S. 610
    , 617-18 (1976). Here, the prosecutor did not
    comment on Diaz’s silence in a way that violated his constitutional
    rights. “The test for determining if a constitutional violation has
    occurred is whether ‘the language used was manifestly intended or
    was of such character that the jury would naturally and necessarily
    take it to be a comment on the failure of the accused to testify.’”
    United States v. Wharton, 
    320 F.3d 526
    , 538 (5th Cir. 2003)
    (quoting United States v. Rocha, 
    916 F.2d 219
    , 232 (5th Cir.
    1990)). A prosecutor’s intent “is not manifestly impermissible if
    there is some other, equally plausible explanation for [his]
    remark,” and “the question is not whether the jury might or
    probably    would    view   the     challenged   remark   [as   a   comment   on
    silence],    but     whether   it    necessarily    would    have   done    so.”
    Barrientes v. Johnson, 
    221 F.3d 741
    , 780 (5th Cir. 2000). When the
    above discourse is viewed in context, as the law requires, see
    
    Wharton, 320 F.3d at 538
    , it becomes apparent that the prosecutor
    24
    was likely trying to comment on the expert’s lack of familiarity
    with Diaz’s mental condition, not on Diaz’s silence. Dr. Pinkerman
    had indicated in his written report that Diaz was experiencing
    “mild to moderate anxiety, depression and feelings of guilt”
    associated with his current incarceration. (Trial Tr. vol. 37, 155-
    56, Feb. 15, 2000.) By questioning Dr. Pinkerman about what Diaz
    had told him about his current incarceration, the prosecutor was
    likely seeking to prove that Dr. Pinkerman did not know if Diaz was
    experiencing anxiety and depression because of what he had done or
    because he was in jail. (Trial Tr. vol. 37, 155-56.) In light of
    this plausible explanation for the prosecutor’s comment, the jury
    would not necessarily have viewed the comment as a comment on
    silence    and   the   prosecutor’s     intent   was   not   “manifestly
    impermissible.” Accordingly, reasonable jurists could not debate
    that Diaz’s right to remain silent was not violated.
    III. Conclusion
    For   the   foregoing    reasons,    Diaz’s   Application   for   a
    Certificate of Appealability is GRANTED IN PART and DENIED IN PART.
    25