United States v. Setiawan-Ramos ( 2020 )


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  •             United States Court of Appeals
    For the First Circuit
    Nos. 14-1692
    14-1870
    14-1919
    14-2098
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    MANUEL DE JESÚS ROSARIO-PÉREZ; JORGE GÓMEZ-GONZÁLEZ, a/k/a Jorge
    Cara de Truck; BRYANT SETIAWAN-RAMOS, a/k/a Chino; and SANTIAGO
    HERNÁNDEZ-ROSA, a/k/a Chago Coyote,
    Defendants, Appellants.
    APPEALS FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF PUERTO RICO
    [Hon. Daniel R. Domínguez, U.S. District Judge]
    Before
    Howard, Chief Judge,
    Torruella and Dyk,* Circuit Judges.
    José R. Olmo-Rodríguez for appellant Manuel de Jesús Rosario-
    Pérez.
    Rafael F. Castro Lang for appellants Jorge Gómez-González,
    Bryant Setiawan-Ramos, and Santiago Hernández-Rosa.
    William A. Glaser, Attorney, Appellate Section, Criminal
    Division, U.S. Department of Justice, with whom Leslie R. Caldwell,
    Assistant Attorney General, Sung-Hee Suh, Deputy Assistant
    *   Of the Federal Circuit, sitting by designation.
    Attorney General, Rosa E. Rodríguez-Vélez, United States Attorney,
    Mariana E. Bauzá-Almonte, Assistant United States Attorney,
    Appellate Chief, G. Andrew Massucco, Assistant United States
    Attorney, and Elba Gorbea, Assistant United States Attorney, were
    on brief, for appellee.
    April 29, 2020
    HOWARD, Chief Judge.    After a thirty-five-day trial, a
    jury convicted Manuel De Jesús Rosario-Pérez ("Rosario"), Jorge
    Gómez-González ("Gómez"), Bryant Setiawan-Ramos ("Setiawan"), and
    Santiago Hernández-Rosa ("Hernández") of various drug and weapons
    charges.   On appeal, these defendants argue that reversible errors
    infected nearly every stage and aspect of their trials.     Finding
    most of the claims without merit, we affirm as to Rosario, Gómez,
    and Hernández but vacate Setiawan's convictions and remand his
    case for a new trial.
    I.   Background
    We present the facts in the light most favorable to the
    jury verdict, see United States v. Naranjo-Rosario, 
    871 F.3d 86
    ,
    90 (1st Cir. 2017), reserving some details to our analysis of the
    issues raised on appeal.
    The defendants were convicted for their participation in
    a massive drug-trafficking conspiracy that operated various drug
    distribution points in Puerto Rico, including one in Old San Juan's
    La Perla community called "La Boveda." Each defendant was indicted
    for conspiracy to distribute drugs within 1,000 feet of a school
    (Count One) and possession with intent to distribute heroin (Count
    Two), cocaine (Count Three), and marijuana (Count Four).        The
    indictment also charged everyone but Rosario with carrying and
    using firearms in relation to drug trafficking (Count Five).
    - 3 -
    The defendants' joint trial featured testimony from
    several cooperating witnesses, including "Flow," "Willyboy," and
    "Cascote." Rosario, a street-level seller, was convicted on Counts
    One, Three,1 and Four, and was sentenced to time served.              Setiawan,
    a "little boss," was convicted on all counts and sentenced to life
    imprisonment plus five years.           Hernández, the "owner" of certain
    "brands" sold at La Boveda, was convicted on all five counts and
    received a 30-year concurrent sentence on Counts One through Four,
    plus five years on Count Five.          Gómez, the conspiracy leader, was
    convicted   on   Count   One    and   sentenced   to   a    30-year    term   of
    imprisonment.
    For ease of exposition, we will first discuss arguments
    specific to each individual defendant and then move to those
    arguments common to all the appellants.
    II.     Rosario
    Rosario   assails     his    conviction    on    two   individual
    grounds: evidentiary sufficiency and prejudice from eventually
    stricken flight evidence.       Neither argument succeeds.
    A.   Sufficiency
    Rosario argues that the evidence was insufficient to
    convict him on Count One (conspiracy) and Count Four (marijuana
    1As we discuss below, the district court granted Rosario a
    judgment of acquittal on this count due to an inconsistency in the
    jury's special verdict.
    - 4 -
    possession).       "When reviewing the sufficiency of the evidence, we
    reverse only if the evidence, viewed in the light most favorable
    to the government, could not have persuaded any trier of fact of
    the defendant's guilt beyond a reasonable doubt."                      United States
    v. Tavares, 
    705 F.3d 4
    , 17–18 (1st Cir. 2013) (citation omitted).
    In other words, "[w]e need not conclude that no verdict other than
    a guilty verdict could sensibly be reached but must only be
    satisfied that the verdict finds support in a plausible rendition
    of the record."       United States v. Liriano, 
    761 F.3d 131
    , 135 (1st
    Cir. 2014) (citation omitted).                    When conducting this de novo
    review,     see    
    id.,
          we    will     not    "weigh    evidence       or   assess
    credibility."        Tavares, 705 F.3d at 18.
    1.   Count One: conspiracy
    To convict Rosario of conspiracy to distribute drugs,
    "the government must prove beyond a reasonable doubt that an
    agreement     existed       to    commit   the     underlying    offense     and    that
    [Rosario]     elected       to    join    the   agreement,      intending    that    the
    underlying offense be committed." Liriano, 761 F.3d at 135 (citing
    United States v. Paret-Ruiz, 
    567 F.3d 1
    , 5 (1st Cir. 2009)).
    Rosario's agreement to join the conspiracy could have been "express
    or   tacit"    and    the    government         could   prove    it   by   "direct    or
    circumstantial evidence."            
    Id.
     (citation omitted).          "In conducting
    our sufficiency analysis, we remain aware that the government may
    provide evidence sufficient to convict without showing that: (1)
    - 5 -
    each conspirator knew of or had contact with all other members;
    (2) each conspirator knew of all the details of the conspiracy or
    participated   in   every   act    in    furtherance     of   it;   or   (3)   the
    conspiratorial 'cast of characters' remained intact throughout the
    duration of the entire enterprise."               United States v. Cruz-
    Rodríguez, 
    541 F.3d 19
    , 28 (1st Cir. 2008).
    Rosario argues that there was no evidence linking him to
    any of the conspirators: although he was arrested allegedly selling
    drugs at La Boveda, the drugs attributed to him did not have a
    seal or other marking belonging to one of the "brands" commonly
    sold at the drug point.           At most, Rosario claims, he was an
    independent seller operating at the drug point.
    Not so.     Although we agree that "'mere presence at the
    scene of the crime' or 'mere association with conspirators' is not
    enough to establish guilt," United States v. Llinas, 
    373 F.3d 26
    ,
    32 (1st Cir. 2004) (quoting United States v. Gómez-Pabón, 
    911 F.2d 847
    , 853 (1st Cir. 1990)), we have long recognized that "the mere
    presence defense is not so ubiquitous as to envelop every drug-
    trafficking case in which the government lacks direct evidence of
    a   defendant's     complicity,"        
    id.
       (quoting    United     States     v.
    Echeverri, 
    982 F.2d 675
    , 678 (1st Cir. 1993)).                 Like Echeverri
    itself, this is a case in which "a defendant's 'mere presence'
    argument will fall [because] the 'mere' is lacking."                
    982 F.2d at 678
    .
    - 6 -
    A reasonable jury could conclude that Rosario sold drugs
    at La Boveda and that he did so as part of the conspiracy.                     One
    police officer testified that he had seen Rosario "[s]elling
    controlled substances in La Perla, at La Boveda."                Another officer
    testified that when he arrested Rosario after a chase at La Boveda,
    Rosario possessed eighty-one baggies of marijuana, twenty-six
    baggies of cocaine, and over $100 in cash.                 Flow testified that he
    had seen Rosario "hanging out" at the drug point.2                  And Willyboy
    told the jury that he had seen Rosario selling "mostly cocaine and
    marijuana" at the drug point on multiple occasions.
    Evidence    also      showed    that    the   conspiracy's    leaders
    established certain rules for sellers operating at La Boveda, from
    establishing standard drug prices to dictating where sellers could
    market their drugs.          Sellers also pooled their money to hire
    lookouts.     The jury could have inferred that Rosario, as a seller
    at La Boveda, was also subject to these rules and therefore
    participated in the conspiracy.             See United States v. Mena-Robles,
    4  
    F.3d 1026
    ,    1032    (1st    Cir.    1993)    (noting    that,    in   some
    conspiracies,       "there   are    circumstances      where    presence   itself
    implies participation" (quoting United States v. Ortiz, 966 F.2d
    2Rosario interprets Flow's testimony as establishing that
    Rosario "was not a member" of the conspiracy. We disagree. Flow
    never testified that Rosario "was not a member," nor did he
    contradict other witnesses who testified that Rosario was, in fact,
    selling as part of the conspiracy.
    - 7 -
    707, 712 (1st Cir. 1992))).       "While these factual conclusions are
    not the only ones the jury could have reached, we find them . . .
    reasonable."     
    Id.
        Therefore, we find the evidence sufficient to
    support Rosario's drug-conspiracy conviction.
    2.    Count Four: marijuana
    Rosario claims that the evidence was insufficient on
    this count because there is no way that the jury could have
    believed testimony that he sold marijuana and cocaine at the drug
    point.   The jury convicted Rosario of possession with intent to
    distribute cocaine but found no amount of cocaine attributable to
    him.   This inconsistency, Rosario maintains, establishes that the
    jury did not believe the witnesses who connected Rosario to
    cocaine; so, to the extent that the same witnesses connected
    Rosario to marijuana, the jury must have disbelieved them on the
    marijuana question too.      Once we eliminate this testimony, Rosario
    concludes, there is not enough evidence left to convict him on the
    substantive marijuana count.
    We disagree.      Inconsistent verdicts "often are a product
    of jury lenity."       United States v. Powell, 
    469 U.S. 57
    , 65 (1984).
    Therefore, sufficiency review on one count "should be independent
    of the jury's determination that evidence on another count was
    insufficient."     
    Id. at 67
    ; see also Mena-Robles, 
    4 F.3d at 1031
    ("[T]he jury is empowered to accept or reject, in whole or in part,
    any testimony.").      Furthermore, Rosario was arrested while fleeing
    - 8 -
    La Boveda with eighty-one baggies of marijuana.                      "[I]ntent to
    distribute    drugs    can     legitimately       be    inferred    from   factors
    [including] quantity . . . ."             Echeverri, 
    982 F.2d at 678
    .           The
    evidence was sufficient to support Rosario's conviction on the
    substantive marijuana count.
    B.   Prejudice from stricken flight evidence
    Before trial, the court sent Rosario to an inpatient
    drug-treatment program.          Shortly thereafter, Rosario absconded
    from the treatment center and evaded capture for nearly two weeks.
    Over Rosario's objection, a deputy marshal testified at trial that
    he   subsequently     found    and    arrested    Rosario.         Initially,   the
    district court indicated that it was planning to instruct the jury
    that flight evidence could be probative of consciousness of guilt,
    but ultimately it instructed the jury that the marshal's testimony
    was "not to be taken into consideration."               Moreover, when charging
    the jury, the court offered this reminder: "Anything I have
    excluded from evidence or ordered stricken and instructed you to
    disregard is not evidence.           You must not consider such items."
    On   appeal,     Rosario    argues    that,    because    the   other
    evidence against him was so weak, the jury probably convicted him
    based on impermissible flight evidence.                Not only do we doubt that
    the district court abused its discretion by initially admitting
    the flight evidence, see United States v. Benedetti, 
    433 F.3d 111
    ,
    116 (1st Cir. 2005), but the court also mitigated any potential
    - 9 -
    damage with its later curative instruction.                  As we have recognized
    time and again, "within wide margins, the potential for prejudice
    stemming from improper testimony or comments can be satisfactorily
    dispelled    by    appropriate       curative       instructions,"      even    if   the
    instructions       do    not     follow    immediately     upon   the    problematic
    remark.     United States v. Ayala-Vázquez, 
    751 F.3d 1
    , 26 (1st Cir.
    2014) (quoting United States v. Pagán-Ferrer, 
    736 F.3d 573
    , 587
    (1st Cir. 2013)).
    In    light    of    both    the    court's    instructions       and   the
    evidence against Rosario, which was sufficient to convict even
    without the flight evidence, we see no reason to believe that the
    jury convicted Rosario based on the stricken flight evidence.                        See
    
    id.
     at 25–27 (presumption that jury followed court's curative
    instruction       is    overcome    only    in     "rare   circumstances       implying
    extreme prejudice" (emphasis omitted) (quoting United States v.
    Freeman, 
    208 F.3d 332
    , 339 (1st Cir. 2000)).
    III.     Setiawan
    As part of its conspiracy case, the government presented
    evidence that Setiawan shot and killed "Teton," a drug seller
    indebted to Setiawan. On appeal, Setiawan claims that the district
    court erred by: (1) admitting evidence that Setiawan killed Teton;
    (2) excluding evidence that Cascote killed Teton; and (3) making
    its sentencing determinations.                  In short, we conclude that the
    district court's decision to admit the murder evidence while
    - 10 -
    excluding the exculpatory evidence was not proper and that the
    cumulative effect of the decision warrants a new trial. Because we
    remand for a new trial, we do not reach Setiawan's sentencing
    claims.
    A.   Admitting Murder Evidence
    Setiawan argues that the district court constructively
    amended the indictment by admitting evidence that he killed Teton.
    Essentially, Setiawan argues that he was charged with a conspiracy
    to distribute drugs -- not the separate offense of killing someone
    during the course of a drug crime -- so evidence of Teton's murder
    could not be presented as an overt act of the drug-distribution
    conspiracy.   Setiawan did not preserve this claim at trial, so as
    both parties agree, we review for plain error.    See United States
    v. Brandao, 
    539 F.3d 44
    , 60 (1st Cir. 2008).
    Although   Setiawan    makes   a   constructive-amendment
    argument, it is unclear whether his complaint would be described
    more appropriately as a variance from the indictment.    See United
    States v. Rodríguez-Rodríguez, 
    663 F.3d 53
    , 58 n.6 (1st Cir. 2008)
    ("The line [between the two doctrines] is inherently fuzzy.")
    (citation omitted).    A constructive amendment occurs when the
    difference between the indictment and the proof at trial is so
    great that the defendant was essentially convicted of a charge for
    which he was not indicted; a variance occurs when the charge is
    unchanged, but the facts proved at trial are different from those
    - 11 -
    alleged in the indictment.    See United States v. Fisher, 
    3 F.3d 456
    , 462 (1st Cir. 1993).    Ultimately, it does not matter whether
    we construe Setiawan's argument as one of constructive amendment
    or variance -- neither occurred here.
    The introduction of evidence at trial that Setiawan
    murdered Teton did not constructively amend the indictment, which
    charged Setiawan with, among other things, conspiracy to possess
    with intent to distribute controlled substances under 
    21 U.S.C. § 846
    . The government is not required to allege or prove any overt
    act as an element of a § 846 conspiracy.      See United States v.
    Vega-Figueroa, 
    234 F.3d 744
    , 754 (1st Cir. 2000) (citing United
    States v. Shabani, 
    513 U.S. 10
    , 13 (1994)).           Therefore, the
    government's gratuitous proof of an overt act relevant to the
    conspiracy -- Teton's murder -- "does not involve an alleged
    constructive amendment of [the indictment] to include an 'offense
    not charged by the grand jury.'" United States v. Fornia-Castillo,
    
    408 F.3d 52
    , 66 (1st Cir. 2005).   "(quoting United States v. Dunn,
    
    758 F.2d 30
    , 35 (1st Cir. 1985))."
    Setiawan is mistaken in his argument that this is the
    first time that murder evidence has been introduced as an overt
    act in a drug conspiracy under 
    21 U.S.C. §§ 841
    (a)(1) and 846.
    We have recognized, but found unavailing, the contention that
    admitting this sort of evidence "arguably carrie[s] the risk of
    turning a drug conspiracy case into a murder case."    United States
    - 12 -
    v. Rivera Calderón, 
    578 F.3d 78
    , 99 (1st Cir. 2009).                 Here, the
    murder evidence does "not appear to have been calculated to arouse
    the passions of the jury," so its admission is not reversible
    error.     
    Id. at 98
    .    Setiawan merely asserts without development
    that the murder evidence was unfairly prejudicial.                Even if his
    argument were not waived, see United States v. Zannino, 
    895 F.2d 1
    , 17 (1st Cir. 1990), after careful review, we note that the
    relevant testimony was presented in a manner similar to that
    approved of in Rivera Calderón -- the witnesses "described the
    murder[]    matter-of-factly,       stating   that   [Teton   was]   shot   but
    leaving out graphic details."         578 F.3d at 98.
    Further, "[t]here is no variance" when, as here, a
    defendant "does not contend that the government failed to prove
    [the indictment's] allegations at trial" but "argues that he was
    charged only with [those] acts, and that the government 'varied'
    from the indictment by offering additional evidence."                    United
    States    v.    Innamorati,   
    996 F.2d 456
    ,   477–78   (1st   Cir.   1993)
    (emphasis in original).
    In Vega-Figueroa, we rejected a variance claim like
    Setiawan's.      There, the defendant claimed that the trial evidence
    of his involvement in a drug-trafficking conspiracy -- including
    his involvement in an uncharged murder -- impermissibly varied
    from the indictment, which did not mention the murder.                
    234 F.3d at 753
    .     We determined that there was "no basis" for a variance
    - 13 -
    claim because the government was not limited at trial only to those
    overt acts alleged in the indictment.    
    Id. at 754
    .   Differently
    stated, "[t]he fact that the government proved aspects of the
    conspiracy beyond those recited in the indictment . . . simply
    does not constitute a variance."   Fisher, 
    3 F.3d at 463
    .
    Finally, even if there had been a constructive amendment
    or variance, Setiawan could not demonstrate prejudice under the
    plain-error standard because he does not dispute that he had
    advance notice of the murder evidence.    See Brandao, 
    539 F.3d at
    62–63 (finding that the constructive amendment did not "seriously
    jeopardize" the defendant's rights when, among other things, he
    "was provided adequate notice of the charges against him"); Fornia-
    Castillo, 
    408 F.3d at 67
     (concluding that the variance was not
    prejudicial when the defendant "had ample notice of and ample
    opportunity to prepare to meet the government's evidence before
    trial").
    In Rivera-Donate, for instance, we declined to find a
    prejudicial variance when the defendant could not 'credibly claim
    surprise' about the government's proof at trial.    
    Id.
         At 130
    (quoting United States v. Marrrero-Ortiz, 
    160 F.3d 768
    , 773 (1st
    Cir. 1998)).     Setiawan knew that he was under indictment for
    participating in a drug-distribution conspiracy, and "he knew that
    his central defense needed to be that he was not part of that
    [conspiracy]."    United States v. Alicea-Cardoza, 
    132 F.3d 1
    , 6
    - 14 -
    (1st Cir. 1997).     Therefore, he cannot demonstrate prejudice under
    the plain-error standard.
    B.   Excluding Exculpatory Evidence
    Setiawan maintains that the district court improperly
    excluded evidence supporting his defense that Cascote, rather than
    Setiawan, killed Teton.        First, Setiawan argues that the district
    court improperly excluded hearsay testimony admissible under the
    statement-against-interest exception.               Second, Setiawan argues
    that the district court erred by striking a witness's testimony
    following   the    witness's     refusal    to   answer    the    prosecution's
    questions on cross-examination. We review for abuse of discretion.
    See United States v. Monserrate-Valentín, 
    729 F.3d 31
    , 52 (1st
    Cir. 2013); United States v. Baskin, 
    424 F.3d 1
    , 3 (1st Cir. 2005).
    1.    Hearsay statement
    Setiawan    wanted    Luis     Rivera-Melendez        ("Rivera"),   a
    codefendant who had pleaded guilty, to testify that he was present
    at Teton's murder and that Cascote, not Setiawan, was the killer.
    But Rivera invoked the Fifth Amendment and refused to testify.
    The district court ruled that Rivera's testimony risked self-
    incrimination and deemed Rivera unavailable as a witness.                    See
    Fed. R. Evid. 804(a)(1).
    Setiawan then attempted to call a defense attorney,
    Miriam   Ramos-Grateroles      ("Ramos"),     who    had   been    present   when
    Setiawan's attorney interviewed Rivera in prison.             Ramos testified
    - 15 -
    outside the jury's presence that Rivera told Setiawan's counsel
    that he witnessed Cascote shoot Teton at a drug point.             Setiawan
    argued    that    Ramos's    testimony   relaying   Rivera's   out-of-court
    statement    was   admissible    under   the   statement-against-interest
    exception because the statement placed Rivera at a drug point,
    exposing him to criminal liability.          See Fed. R. Evid. 804(b)(3).
    The district court excluded the statement.          The court
    reasoned that Ramos's testimony would be "inherently unreliable"
    because she would not be subject to cross-examination about the
    drug-trafficking conspiracy or the murder.          The court's ruling did
    not depend on either criterion relevant to admitting evidence under
    Rule 804(b)(3), namely, that the hearsay statement must be against
    the out-of-court declarant's interest and the statement must be
    corroborated.      See 
    id.
    The court's basis for excluding the hearsay statement
    i.e., that Ramos would not be subject to cross-examination about
    the conspiracy or murder -- was improper.           In-court witnesses who
    relay hearsay statements are never subject to cross-examination
    about the substance of out-of-court statements.          The Federal Rules
    of Evidence exclude hearsay statements generally, see Fed. R. Evid.
    802, in large part because of an opponent's inability to cross
    examine the in-court witness on the substance of the out-of-court
    statement.       See Williamson v. United States, 
    512 U.S. 594
    , 598
    (1994).     The Rules provide exceptions to admit certain hearsay
    - 16 -
    statements,     however,     because       either   the    substance      of     the
    statement, see, e.g., Fed. R. Evid. 803(4) (statement made for
    medical diagnosis or treatment), or the way the declarant makes
    the statement, see, e.g., Fed. R. Evid. 803(2) (excited utterance),
    provides a measure of reliability sufficient to warrant admission,
    even though neither the out-of-court witness nor the in-court
    witness   is    subject     to    cross-examination       on   the    statement's
    substance.     See Williamson, 
    512 U.S. at
    598–99.
    Additionally,       when    the   district   court      excluded    the
    testimony    because   it    was    "inherently     unreliable,"       the     court
    usurped the jury's role.          Reliability and credibility of in-court
    witnesses are matters for the jury to determine. See, e.g., United
    States v. Barone, 
    114 F.3d 1284
    , 1300 (1st Cir. 1997).                   In fact,
    we have rejected precisely what occurred in this case.                  In United
    States v. Seeley, this court agreed with a Second Circuit decision
    holding that Rule 804(b)(3) does not require the trial court to
    make a special assessment of the credibility of a witness who
    relays an out-of-court declaration against penal interest.                       See
    United States v. Seeley, 
    892 F.2d 1
    , 3 (1st Cir. 1989) (citing
    United States v. Katsougrakis, 
    715 F.2d 769
    , 777 (2d Cir. 1983)).
    Undoubtedly, a district court may exclude evidence on grounds other
    than credibility, see, e.g., Fed. R. Evid. 403, but credibility of
    in-court witnesses is exclusively the jury's province, see Seeley,
    
    892 F.2d at 3
    . As a result, the district court improperly excluded
    - 17 -
    Ramos's    testimony    when    it   concluded       the    testimony     would   be
    "inherently unreliable" because the government would not be able
    to cross examine her about the murder or conspiracy.                   The district
    court erred by excluding testimony that should have been admitted
    under Rule 804(b)(3).
    2. Striking Colon's Testimony
    Setiawan's       attorney      also    called      David   Colon-Geigel
    ("Colon"), a coconspirator, as a witness to rebut the murder
    accusation.     In response to questioning from Setiawan's attorney,
    Colon explained that he was Cascote's right-hand man, that Cascote
    is the godfather of his oldest son, and that Colon sold drugs for
    Cascote.    Colon also testified that he witnessed Cascote shoot
    Teton and that Flow, the government's only purported eyewitness to
    the   murder,   was    not   near    the    site    of   the    shooting.     After
    Setiawan's attorney finished questioning Colon, the three other
    defense attorneys each asked whether their clients had any role in
    the drug trafficking in La Perla; Colon responded that none of
    them did.
    On cross-examination, the government asked about Colon's
    drug-trafficking       activities     and    the    defendants'        involvement.
    Then, the government asked further questions about other members
    of the conspiracy who had been indicted in this case and pleaded
    guilty, including Flow who had testified that Setiawan shot Teton.
    Colon answered the questions.              When the government began asking
    - 18 -
    about unindicted members of the conspiracy, Colon refused to answer
    the questions:    "Well, what happens is I don't want to be talking
    like this.   I don't want to incriminate anyone else."                After
    dismissing the jury and summoning Colon's attorney, the judge and
    attorneys reconvened, at which point the prosecutor explained that
    he planned to show Colon one hundred photographs and seven videos
    to probe his knowledge of the conspiracy generally covering the
    unindicted coconspirators.          The government requested that the
    district court strike Colon's entire testimony because he was
    refusing to answer questions about the conspiracy.
    With    his    attorney   present,   Colon   was   asked   by   the
    district court about what questions he intended to answer:
    The Court:  Sir, you testified and you stated that
    you were not going to testify anything further
    relating to any other defendant but these four
    defendants.
    The Witness:       Yes.
    The Court:    Is that still the case?
    The Witness:       I am not going to testify.
    In a bench conference, Colon's attorney stated that "[Colon] has
    stated clearly that he [wa]s going to refuse to testify to any
    further questions."       The district court continued to discuss the
    question whether Colon's testimony should be stricken.               Colon's
    attorney apparently left the courtroom.         The district court then
    asked Colon two more questions:
    - 19 -
    The Court:   So that means that you are not going to
    answer any questions as to Setiawan?
    The Witness:      No.
    The Court:   And that means that you are not going to
    answer any further questions as to any further
    defendants that are here?
    The Witness: I would answer questions if I wasn't asked
    questions regarding people that are not present here.
    Colon's statements were ambiguous about whether he was refusing to
    answer questions about only unindicted coconspirators or also
    questions involving Teton's murder.              Even Colon's "no" answer to
    the first question regarding Setiawan is unclear whether he meant
    to   say   he   would    or   would    not     answer   questions   about   him.
    Nonetheless, the district court ordered Colon's testimony stricken,
    subject to reconsideration if Colon's attorney "allows him to
    talk."     The attorney for Colon later reappeared and stated that "I
    went to the cellblock and I spoke with David Colon Geigel.                    He
    reiterated      his    position   to    testify     about    anyone."       This
    representation did little to clarify Colon's intention and appeared
    inconsistent with Colon's last statement that "I would answer
    questions if I wasn't asked questions regarding people that are not
    present here."        Nevertheless, the district court made no further
    effort to clarify the scope of Colon's refusal.
    Despite the ambiguity of Colon's refusal, the district
    court granted the government's request to strike his testimony.
    - 20 -
    The court initially reasoned that attorneys for the defendants
    other than Setiawan opened the door to the conspiracy questions.
    Ultimately, however, the court concluded that Setiawan's attorney's
    having asked Colon about Cascote and Colon's responses opened up
    all questions related to the conspiracy, because Cascote was a
    leader of the conspiracy.       Further, the court explained, even the
    murder-related questioning opened the door for cross-examination
    about the entire conspiracy because the murder was part of the
    conspiracy. On this basis, the district court struck Colon's entire
    testimony, including his direct testimony about Teton's murder.3
    "The Sixth Amendment guarantees criminal defendants the
    right to present a defense, but that right is subject to the
    government's legitimate interest in testing the truth of testimony
    offered by the defense through cross-examination."          United States
    v. Bartelho, 
    129 F.3d 663
    , 673 (1st Cir. 1997).           Therefore, "[a]
    trial judge may strike a witness's direct testimony if he flatly
    refuses   to    answer   cross-examination    questions   related   to   the
    details of his direct testimony."          
    Id.
     (internal quotation marks
    omitted).      But if the prosecution asks about collateral matters -
    - matters that are not "of consequence to the case" -- the district
    court should "protect the defendant's right to present his defense,
    3Striking the entire testimony, the district court instructed
    Setiawan's attorney: "I am sorry. Appeal the ruling. There you
    have a very good potential appeal issue."
    - 21 -
    if possible."    
    Id.
     (citing United States v. Gary, 
    74 F.3d 304
    , 310
    (1st Cir. 1996); United States v. Morla-Trinidad, 
    100 F.3d 1
    , 5
    n.4 (1st Cir. 1996)).
    In certain circumstances, a district court may strike a
    witness's    testimony       in    its      entirety,   rather    than    merely
    restricting the scope of cross-examination.                See, e.g., United
    States v. De La Cruz, 
    996 F.2d 1307
    , 1313 (1st Cir. 1993).                  But
    here,   unlike   in    De     La    Cruz,     "effective   government     cross-
    examination" about Teton's murder would not have been "seriously
    impaired" if the prosecutor was not allowed to ask Colon about
    nearly one hundred other coconspirators who had no relation to the
    murder-related testimony.            The prosecutor could still inquire
    about Colon's relationships with Setiawan and Cascote and Colon's
    version of events on the night of the murder.
    Colon's testimony presented the district court with a
    challenging situation.        Before the government was able to finish
    cross   examining     Colon       about   Teton's   murder,      Colon   stopped
    answering questions.        As discussed earlier, it is unclear from the
    record whether Colon was refusing to answer questions covering
    unindicted members of the conspiracy, a matter collateral to
    Teton's murder, or broader questions concerning the murder.
    While the murder was part of the conspiracy, the extent
    of the conspiracy and the participation, or lack thereof, of
    hundreds of coconspirators constitute issues collateral to the
    - 22 -
    murder.     In other words, the murder is "within the scope" of the
    conspiracy, but the conspiracy is not "within the scope" of the
    murder,     and     the   coconspirators'        participation    is    not    "of
    consequence to the resolution of the issue[]" of who murdered
    Teton. United States v. Castro, 
    129 F.3d 226
    , 231 (1st Cir. 1997).
    Because the record was unclear whether Colon was refusing to answer
    questions relating only to such collateral issues, the district
    court     clearly    erred      by   striking    Colon's    testimony    without
    ascertaining whether his refusal pertained to the murder or not
    just collateral matters relating to unindicted coconspirators.
    See Bartelho, 
    129 F.3d at 673
    .
    C. Cumulative Prejudicial Effect
    Because       the   court    admitted   evidence     that   Setiawan
    committed the murder, we hold that under the Constitution or,
    failing that, under the court's supervisory power to make the rules
    of   evidence     just    and   fair    in   application,   Setiawan    must   be
    permitted to offer evidence to show that he did not commit the
    murder.     Under the current record, the district court erred by
    precluding Setiawan from doing so by excluding the testimonies of
    Ramos and Colon.
    In a nutshell, it is not appropriate that prejudicial
    and highly inflammatory evidence -- here, that Setiawan killed
    Teton in the course of the conspiracy -- could be admitted without
    giving Setiawan an opportunity to show by reasonable evidence that
    - 23 -
    he did not commit the murder. The rules of evidence are instituted
    not for the splendor of their being but rather to make courts
    administer fair and just trials.       See Fed. R. Evid. 102 ("These
    rules should be construed so as to administer every proceeding
    fairly, eliminate unjustifiable expense and delay, and promote the
    development of evidence law, to the end of ascertaining the truth
    and securing a just determination.").        Where the stakes are very
    high, it is a court's job to make sure that the rules themselves
    are not made an instrument of injustice.
    We should not be read to overly fault the highly capable
    trial judge.   In the high-speed context of trial, a trial judge
    can do little else than make quick rulings and go where the
    proceedings lead him or her.       But with the time and space to see
    the whole trial in context, we are not merely free but bound to
    prevent a manifest injustice.      Cf. United States v. Sepulveda, 
    15 F.3d 1161
    , 1195–96 (1st Cir. 1993).       And while appeals courts do
    not often have to exercise this function, they do it when they
    must, offering various explanations depending on what occurred at
    the   lower-court   proceedings.      See,   e.g.,   United   States   v.
    Sanabria, 
    645 F.3d 505
    , 516–19 (1st Cir. 2011); United States v.
    Dwyer, 
    843 F.2d 60
    , 65 (1st Cir. 1988).
    The matter can be put in many different ways, and one
    way may be more apt than others depending on the precise issue.         A
    perfectly admirable example is our ruling in United States v.
    - 24 -
    Lombard in which the combined application of individually well-
    accepted sentencing doctrines violated the Due Process Clause.
    See United States v. Lombard, 
    72 F.3d 170
    , 175–87 (1st Cir. 1995).
    The opinion in that case invoked the common-sense adage that the
    whole is sometimes greater than the sum of its parts and that the
    whole is what matters.        See, e.g., 
    id. at 175, 177
    .
    We think the most certain basis for ordering a new trial,
    albeit a basis that rarely has to be invoked, is what we have just
    said: that reexamined in the leisure of an appeal, to allow
    evidence   that   Setiawan     murdered      Teton   and   disallow   plausible
    evidence   that   he    did   not    based    on   erroneous   rulings   is   an
    unacceptable result.      On that basis, Setiawan's convictions must
    be reversed, and the case remanded for a new trial.
    IV.    Hernández
    Hernández raises one argument specific to his case: that
    the district court should have declared a mistrial, or at least
    given a curative instruction, after a police officer testified
    about a Glock handgun and white powder recovered during a search
    of Hernández's home.      Hernández neither contemporaneously objected
    to the evidence's admission nor moved for a mistrial, so we review
    for plain error.       See United States v. Walker, 
    665 F.3d 212
    , 229
    (1st Cir. 2011) (unpreserved lay opinion objection reviewed for
    plain error); United States v. Panet-Collazo, 
    960 F.2d 256
    , 260
    (1st Cir. 1992) (same for belated mistrial request).
    - 25 -
    At trial, the officer testified that, while searching
    Hernández's home pursuant to a warrant, he found "controlled
    substances[, i.e.] a white, powdery substance" and a 9mm Glock
    hidden in a secret compartment in some furniture.4                    Hernández
    argues that the officer's statements identifying the white powder
    as drugs constituted inadmissible lay-opinion testimony under
    Federal Rule of Evidence 701 because the government did not build
    a   foundation    sufficient     to    establish   that    the    officer    could
    identify the powder as drugs simply by looking at it.
    We    need   not   reach    this   question,    however,    because
    Hernández    cannot      establish     prejudice   under     the    plain-error
    standard.        Multiple    witnesses    testified   that       Hernández    sold
    thousands of dollars' worth of heroin every week and that he
    carried a handgun at the drug point.           We will not find plain error
    when "the challenged testimony constituted a tiny part of the
    government's case."         Walker, 
    665 F.3d at 230
     (further noting that
    "it is wildly implausible that the jury would have reached a
    different conclusion . . . in the absence of [the challenged]
    testimony").
    4We do not address Hernández's other claims of error, which
    "lack arguable merit," relating to the evidence seized from this
    search. United States v. Rose, 
    802 F.3d 114
    , 117 (1st Cir. 2015).
    - 26 -
    V.    Gómez
    Gómez   principally       argues   that    the    district     court
    deprived him of his constitutional rights to present a defense and
    to   a   fair   trial   by   refusing    to   allow    the   jury   to   consider
    voluminous Spanish-language documents related to his defense that
    he was too busy being a community leader to have the time to be a
    drug-conspiracy leader.       The district court provisionally admitted
    the Spanish-language exhibits, delayed jury deliberations for
    nearly one week to allow for translation, and ultimately instructed
    the jury not to consider the untranslated documents.
    Gómez objected at trial, so the government urges us to
    apply the abuse-of-discretion standard.                See United States v.
    Pires, 
    642 F.3d 1
    , 13 (1st Cir. 2011).                 Under any standard of
    review, the district court did not err when it complied with its
    statutory duty to refuse to allow the jury to consider untranslated
    documents.
    The Jones Act requires "[a]ll pleadings and proceedings"
    in the District of Puerto Rico to be "conducted in the English
    language."      
    48 U.S.C. § 864
    .       We have been clear that this is an
    "independent duty of the district court" grounded in a policy of
    integrating Puerto Rico with the rest of the United States and
    that this duty is "too great to allow parties to convert [the
    district] court into a Spanish language court at their whim."
    United States v. Millán-Isaac, 
    749 F.3d 57
    , 63 (1st Cir. 2014)
    - 27 -
    (citation omitted).      "[T]he duty of the [district] court to ensure
    compliance with the Jones Act is not lessened in cases where
    counsel . . . encourages the district court to set aside the
    English-language requirement."      
    Id.
     (citation omitted).      Here, the
    district court, mindful of its duty, appropriately denied Gómez's
    request.5
    VI.    District court's behavior
    Collectively, the defendants claim a passel of errors
    based on the district court's behavior at trial.6           In short, we
    find no reversible error.
    A.   Reference to a potential appeal
    Attempting    to   resolve   a   computer   glitch   affecting
    contemporaneous transcription of witness testimony, the district
    court told the prosecutor "I know you are satisfied, but if the
    record says contrary . . . Boston is going to hear something else,
    right? If it goes on appeal." The defendants moved for a mistrial,
    arguing that this fleeting reference to a potential appeal signaled
    to the jury that the judge believed they were guilty.            We review
    the district court's denial of the defendants' mistrial motion for
    abuse of discretion.     Ayala-Vazquez, 751 F.3d at 23.      Upon review,
    5We note that Gómez was able to present this theory through
    multiple witnesses at trial, notwithstanding the documents'
    exclusion.
    6After careful review, we do not address several of these
    claims, which "lack arguable merit." Rose, 802 F.3d at 117.
    - 28 -
    it is clear that the district court sought only to ensure the
    accuracy of its record; it did not give "the jury an impression
    that the court believe[d] the defendant[s were] guilty."             United
    States v. Laureano-Peréz, 
    797 F.3d 45
    , 70 (1st Cir. 2015)(citation
    omitted).   There was no error here.
    B.   Court's comments at trial
    According   to   the   defendants,   some   of    the   district
    court's comments at trial (and its questioning of witnesses in
    particular) "tipped the scales in favor of the prosecution" and
    deprived them of a fair trial.      We review for abuse of discretion.7
    Ayala-Vazquez, 751 F.3d at 23.         In so doing, we must consider
    "isolated incidents in light of the entire transcript so as to
    guard against magnification on appeal of instances which were of
    little importance in their setting."        United States v. Candelaria-
    Silva, 
    166 F.3d 19
    , 35 (1st Cir. 1999) (quoting United States v.
    Montas, 
    41 F.3d 775
    , 779 (1st Cir. 1994)).
    "It cannot be gainsaid that [a] fair trial in a fair
    tribunal is a basic requirement of due process.              Accordingly, a
    7Abuse-of-discretion review also applies to Hernández's
    favoritism argument: that the district court pressured the defense
    to finish quickly. See United States v. Romero-López, 
    695 F.3d 17
    , 21 (1st Cir. 2012). Such abuse will be "found only where the
    Court exhibited an unreasonable and arbitrary insistence upon
    expeditiousness in the face of a justifiable request for delay."
    
    Id.
     (quoting United States v. Mangual-Santiago, 
    562 F.3d 411
    , 429–
    30 (1st Cir. 2009)). Upon thorough review, we find no abuse of
    discretion here.
    - 29 -
    trial judge should be fair and impartial in his or her comments
    during a jury trial."     Ayala-Vázquez, 751 F.3d at 23–24(alteration
    in original) (quoting United States v. de la Cruz-Paulino, 
    61 F.3d 986
    , 997 (1st Cir. 1995)).           We recognize, however, that "mere
    active participation by the judge does not create prejudice nor
    deprive the party of a fair trial."             Id. at 24 (quoting Deary v.
    City of Gloucester, 
    9 F.3d 191
    , 194 (1st Cir. 1993)).                     Therefore,
    the defendants must both "demonstrate that the trial court's
    actions rise to the level of bias," and "meet [their] burden of
    demonstrating serious prejudice."             Candelaria-Silva, 
    166 F.3d at 36
    .
    Although    our    careful    review           of    the     briefs    and
    transcripts leads us to believe that the district court's approach
    was evenhanded and thus not improper, cf. United States v. Santana-
    Pérez, 
    619 F.3d 117
    , 124–25 (1st Cir. 2010) (holding it improper
    to    question    defendant-witness      in    a        different      "tenor"     than
    prosecution      witnesses),   we   ultimately          need    not    determine    the
    propriety of each and every comment, because the defendants cannot
    show serious prejudice.        See Ayala-Vázquez, 751 F.3d at 25.
    The district court's repeated curative instructions were
    sufficient to ward off any serious prejudice.                   See id. at 26 ("We
    have long recognized in this Circuit that 'within wide margins,
    the potential for prejudice stemming from improper . . . comments
    can    be   satisfactorily       dispelled         by     appropriate       curative
    - 30 -
    instructions.'" (quoting Pagán-Ferrer, 736 F.3d at 587)).              During
    its questioning of one witness, for example, the district court
    told the jurors that "[they could] throw [the court's questions]
    in the wastepaper basket."           And when charging the jury, the
    district court reiterated that sentiment:
    During the course of trial, I occasionally asked
    questions of a witness in order to bring out facts not
    fully covered in the testimony. Do not assume that I
    hold any opinion on the matters to which my questions
    are related. Remember that at all times, you as jurors
    are at liberty to disregard all comments of the Court in
    arriving at your own findings of the facts.
    As in Candelaria-Silva, "the strong instructions given by the trial
    court during and at the end of the trial . . . eliminated any
    conceivable prejudice."       
    166 F.3d at 36
    .
    C.   Flow's cross-examination
    The   defendants   contend    that     the   district      court
    impermissibly limited Flow's cross-examination in three areas:
    charges pending against him, uncharged murders, and recorded jail
    calls.    Although the defendants preserved only the second of these
    challenges, all three would fail even if preserved.            So, favorably
    to the defendants, we will review these three areas for abuse of
    discretion, while reviewing de novo whether the defendants had "a
    reasonable opportunity to impeach" Flow.            United States v. Casey,
    
    825 F.3d 1
    , 24 (1st Cir. 2016).
    The Sixth Amendment guarantees criminal defendants the
    right     of   cross-examination;    a   district     court,   however,    has
    - 31 -
    "considerable discretion to impose reasonable limits" on it.                            
    Id.
    at 23–24 (citation omitted). "To establish that the district court
    has abused its discretion, the defendant[s] must show that the
    limitations imposed were clearly prejudicial."                    United States v.
    Ofray-Campos, 
    534 F.3d 1
    , 37 (1st Cir. 2008) (quoting United States
    v. Williams, 
    985 F.2d 634
    , 639 (1st Cir. 1993)).                       "The ultimate
    question    is     whether       'the   jury    is    provided    with       sufficient
    information . . . to make a discriminating appraisal of a witness's
    motives and bias.'"          United States v. Landrón-Class, 
    696 F.3d 62
    ,
    72 (1st Cir. 2012) (quoting DiBenedetto v. Hall, 
    272 F.3d 1
    , 10
    (1st Cir. 2001)).         We consider the three challenged areas in turn.
    1.     Pending charges
    The district court's restriction of cross-examination
    into     Flow's        pending    state-court        charges     was       not    clearly
    prejudicial.           The defendants were able to inform the jury of:
    Flow's    prior        criminal    convictions;       the   existence        of    Flow's
    cooperation agreement with the government (potentially reducing
    Flow's    incarceration          from   a   term     of   life   to    a    government-
    recommended       87    months);    and     Flow's    personal    dislike         for   the
    defendants.
    2.     Uncharged murders
    Seeking to discredit Flow at trial, the defense implied
    that Flow had killed five people, which he denied.                          At sidebar,
    Gómez's counsel claimed to have witnesses who could testify about
    - 32 -
    these uncharged murders.               The district court ultimately struck
    these questions and answers based on Federal Rule of Evidence 608.
    On appeal, the defendants argue that "involvement in murders where
    there   has    been    no    conviction       is    a   proper     subject    of    cross-
    examination        since     it   is   part    of       the   benefits   received       by
    cooperating."        The district court's contrary decision was not an
    abuse of discretion.          See United States v. Thomas, 
    467 F.3d 49
    , 56
    (1st Cir. 2006) (stating that evidence rules allow judge to exclude
    extrinsic evidence on a collateral matter, whether offered to prove
    character for truthfulness or some other impeachment ground, like
    bias or contradiction).
    3.    Jailhouse calls
    The     same    rationale       suffices        to    dispose        of   the
    defendants' argument that the district court erred by not admitting
    certain of Flow's jailhouse phone calls.                       See United States v.
    DeCologero, 
    530 F.3d 36
    , 60 (1st Cir. 2008) (noting judge's
    discretion under Federal Rule of Evidence 403 to exclude extrinsic
    evidence of witness's bias). In any event, Flow admitted on cross-
    examination to many statements contained in the recordings that
    informed his motivation to testify, such as: that "these people
    from La Perla, they treated me really bad;" that he "hate[d]" some
    of the defendants; and that if he "talk[ed]," he expected to get
    a sentence between "two, three or four years only."                      The jury had
    - 33 -
    sufficient information to discern Flow's possible bias.          There was
    no reversible error here.
    D.   Uvaldo-Gomez's testimony
    Manuel Uvaldo-Gomez8, a government informant, testified that
    he tried to get involved in the conspiracy by approaching a woman,
    Drucaste, who told him about the conspiracy's operations, such as
    bringing drugs into the community through the piers.             Gómez and
    Hernández, both of whom worked at the piers at various times
    relevant to the charged conspiracy, objected to these statements'
    admission   as   hearsay.   The    district   court   admitted    them   as
    nonhearsay party-opponent statements by a coconspirator under
    Federal Rule of Evidence 801(d)(2)(E).
    As the statements' proponent, the government must prove
    by a preponderance of the evidence that "the declarant," Drucaste,
    "and the defendant[s]," Gómez and Hernández, "were members of a
    conspiracy when the hearsay statement was made, and that the
    statement was in furtherance of the conspiracy."       United States v.
    Petrozziello, 
    548 F.2d 20
    , 23 (1st Cir. 1977).           We review the
    defendants' preserved challenges for clear error.         United States
    v. Ciresi, 
    697 F.3d 19
    , 25–26 (1st Cir. 2012) (citations omitted).
    8The witness's name       appears as "Osvaldo-Gomes" in the
    appellants' briefs but as       "Uvaldo-Gomez" in the government's
    brief.
    - 34 -
    Although a closer question than the government admits,
    the     district    court's     determination      that     Drucaste    and     the
    defendants were members of the same conspiracy was not erroneous.
    Because of the deferential standard of review, a defendant seeking
    to overturn a trial court's Petrozziello ruling carries a heavy
    burden:
    A finding is clearly erroneous when although there is
    evidence to support it, the reviewing court on the entire
    evidence is left with a definite and firm conviction
    that a mistake has been committed. Where the evidence
    is susceptible of two plausible interpretations, the
    trier of fact's choice between them cannot be clearly
    erroneous.
    United States v. Newton, 
    326 F.3d 253
    , 257 (1st Cir. 2003) (quoting
    Reich v. Newspapers of New England, Inc., 
    44 F.3d 1060
    , 1080 (1st
    Cir. 1995)).
    "[A]       coconspirator's    statement,      standing    alone,   is
    insufficient       to    meet   the   preponderance     standard      [and]   some
    extrinsic proof of the declarant's involvement in the conspiracy
    [is required]."         Id. at 258 (quoting Sepulveda, 
    15 F.3d at 1181
    ).
    Such proof exists here:         Uvaldo testified to his own knowledge of
    Drucaste's involvement in the drug-trafficking conspiracy; indeed,
    that is why he went to her to inquire about how he himself could
    join the conspiracy.         The defendants conceded as much at trial --
    their     objections        concerned     not    whether     Drucaste     was    a
    coconspirator, but whether her statements were in furtherance of
    the conspiracy.
    - 35 -
    Drucaste's   statements    were   in   furtherance    of   the
    conspiracy because they "tend[ed] to promote one or more of the
    objects of the conspiracy." Ciresi, 697 F.3d at 28 (quoting United
    States v. Piper, 
    298 F.3d 47
    , 54 (1st Cir. 2002)).9            She told
    Uvaldo to talk to "a Dominican who was a runner for Cascote" if he
    wanted to "become a pusher."        Such a statement "made for the
    purpose of inducing or continuing participation in the conspiracy
    [is] in furtherance of the conspiracy."     Id. at 29 (quoting United
    States v. Pelletier, 
    845 F.2d 1126
    , 1128 (1st Cir. 1988)).           And
    she told Uvaldo that incarcerated conspiracy members' families
    would be provided money and that the drugs came in through the
    piers. "[S]haring . . . pertinent information about a conspiracy's
    mode of operation furthers the conspiratorial ends."     
    Id.
     (quoting
    Sepulveda, 
    15 F.3d at 1181
    ).
    VII.   Prosecutor's behavior
    The defendants collectively raise about a half-dozen
    claims of prosecutorial misconduct throughout the trial. We review
    preserved claims de novo and unpreserved claims for plain error.
    United States v. Sepúlveda-Hernández, 
    752 F.3d 22
    , 31 (1st Cir.
    2014) (citations omitted).     Either way, we may first consider
    whether the government's conduct was, in fact, improper.             See
    9 For Rule 801's purposes, it matters not that Uvaldo was a
    government informer when Drucaste spoke to him about the
    conspiracy. See Ciresi, 697 F.3d at 28 & n.5.
    - 36 -
    United States v. Duval, 
    496 F.3d 64
    , 78 (1st Cir. 2007).     If so,
    we will only reverse if the misconduct "so poisoned the well that
    the trial's outcome was likely affected."         United States v.
    Vázquez-Larrauri, 
    778 F.3d 276
    , 283 (1st Cir. 2015) (quoting United
    States v. Kasenge, 
    660 F.3d 537
    , 542 (1st Cir. 2011)).           Four
    factors guide our analysis:
    (1) the severity of the prosecutor's misconduct,
    including whether it was deliberate or accidental; (2)
    the context in which the misconduct occurred; (3)
    whether the judge gave curative instructions and the
    likely effect of such instructions; and (4) the strength
    of the evidence against the defendant.
    
    Id.
     (quoting Kasenge, 
    660 F.3d at 542
    ) (alteration omitted).
    In short, we find the well untainted.        Most of the
    defendants' claims "lack arguable merit," so we do not discuss
    them further.    Rose, 802 F.3d at 117.   The arguably closer calls,
    to which we turn next, miss the mark for reversible error.
    A.   Withdrawing the Federal Rule of Evidence 404(b) request
    The government indicated that it intended to introduce
    prior-bad-acts evidence relating to drug-trafficking convictions
    against Gómez and Hernández.     The district court instructed the
    jurors that they were "about to be presented documentary evidence
    [that Gómez and Hernández] committed acts similar to those charged
    in this case."    After a brief recess, the government changed its
    mind and told the district court that it would not seek to
    introduce this evidence after all.      Gómez and Hernández maintain
    - 37 -
    that the prosecutor committed misconduct by allowing the jury to
    hear the judge's instruction and then not presenting the evidence
    -- and that this misconduct led the jury to speculate as to the
    defendants' previous trafficking activities, thereby leaving them
    in a worse position than they would have been in had the actual
    evidence been introduced.
    We are unconvinced.          Assuming only for argument's sake
    that withdrawing a valid Rule 404(b) request and not presenting
    prior-bad-acts evidence is misconduct, the district court gave two
    curative    instructions     (one    immediately      after   the   government
    announced that it would not introduce the evidence, and one when
    charging the jury). And the defendants concede that the government
    "had sufficient direct evidence to obtain a conviction" without
    the Rule 404(b) evidence.          In these circumstances, there was no
    reversible misconduct.
    B.   Government objections during defense direct examination
    Gómez argues that the prosecutor's constant objections
    during his direct examination of two defense witnesses disrupted
    the testimonies' flow and undermined his case.                  There was no
    misconduct here: the district court sustained nineteen of the
    prosecutor's twenty-three objections during the first witness's
    direct examination and overruled five of ten objections during the
    second witness's direct examination.          See Sepúlveda-Hernández, 752
    F.3d   at   32   (stating   that    no   misconduct   when    "[m]ost   of   the
    - 38 -
    objections . . . were either sustained by the court or elicited
    clarifications"            and    further          noting    that       "the      failed
    objections . . . do not seem so groundless as to be vexatious").
    C.   Closing argument
    The       defendants     argue    several      different      theories    of
    prosecutorial misconduct during the government's closing argument,
    none of which constitutes reversible error.
    1.    Parties' roles
    First,        the    defendants        claim    that   the     prosecutor
    improperly commented on the parties' roles and strengthened his
    personal credibility by, among other things, telling the jury "I
    represent        the     United   States      government."          After      carefully
    reviewing the record and the parties' briefs, we conclude that the
    prosecutor's simple factual statement did not improperly "place[]
    the prestige of [his] office behind the government's case," United
    States v. Vizcarrondo-Casanova, 
    763 F.3d 89
    , 95 (1st Cir. 2014)
    (quoting United States v. Pérez-Ruiz, 
    353 F.3d 1
    , 9 (1st Cir.
    2003)), nor did it improperly describe the parties' roles.                            Cf.
    United States v. Manning, 
    23 F.3d 570
    , 573 n.1 (1st Cir. 1994)
    (noting     it     was     improper    to     "liken     [defense     attorneys]       to
    Shakespeare's          players,     full      of    sound    and    fury    signifying
    nothing").
    - 39 -
    2.    Vouching
    The    defendants'   second     claim,   that   the   prosecutor
    improperly vouched for the credibility of government witnesses, is
    a closer call.       Improper vouching can occur when a prosecutor
    implies "that the jury should credit the prosecution's evidence
    simply because the government can be trusted."                Vizcarrondo-
    Casanova, 763 F.3d at 95 (quoting Pérez-Ruiz, 
    353 F.3d at 9
    ).
    Here, in his rebuttal argument, the prosecutor discussed the
    defense's    closing   arguments    relating    to   the    credibility   of
    government witnesses:
    They want you to believe the bad things that don't
    implicate their client, but they want you to know the
    good things. You makes [sic] that choice. You are the
    judges. You decide who you want to believe, what you
    want to believe, and how you want to believe it. But in
    order to find any of these defendants not guilty, you
    are going to have to disbelieve all the cooperators. In
    other words, where are we getting our witnesses if the
    only witnesses that we can get in this case are all
    liars?
    As in Vizcarrondo-Casanova, we think that the prosecutor
    "unwisely put his toes up to the line."          763 F.3d at 96 (finding
    no "clear and obvious" error when the prosecutor argued that
    government witnesses' inconsistent statements enhanced credibility
    because the government could have gotten the witnesses into a room
    together and had them create a consistent story). But we recognize
    that "[t]he line between the legitimate argument that a witness's
    testimony is credible and improper 'vouching' is often a hazy one,
    - 40 -
    to be policed by the trial court in the first instance."                 Id.
    (quoting Innamorati, 
    996 F.2d at 483
    ).           And here, the district
    court did not sustain the defense objection to the prosecutor's
    argument.
    Even if this argument were improper, it did not likely
    affect the trial's outcome, so it would not warrant reversal.
    First, any misconduct was not severe: though "one might read into
    the rebuttal here a suggestion that the government itself concluded
    that the stories were credible," 
    id.,
     this is a far cry from the
    sorts of credibility arguments that merit reversal.            See Vázquez-
    Larrauri, 778 F.3d at 284 (collecting cases).         Second, the context
    militates against reversal.          At closing, the defendants argued
    extensively that the government witnesses were "bought and paid
    for witnesses" whose testimonies "have to be rejected completely"
    because "[t]here is no reason to trust a liar."             Cf. Vizcarrondo-
    Casanova, 763 F.3d at 96 (noting hesitance to find misconduct when
    defense counsel "pretty much invited the rebuttal" by suggesting
    that the government's witnesses were liars).          Third, not only did
    the judge instruct the jury that the lawyers' arguments were not
    evidence,   but   the   prosecutor    himself,   in   the    very   statement
    complained of, also told the jurors that they alone were "the
    judges" of witness credibility.           In these circumstances, any
    prosecutorial misconduct did not "so poison the well that the
    - 41 -
    trial's outcome was likely affected."            Vázquez-Larrauri, 778 F.3d
    at 283.
    3.   Teton's murder
    Finally, Gómez and Setiawan argue, albeit with different
    points of emphasis, that the prosecutor committed misconduct by
    referring to Teton's murder in his closing argument. We can easily
    dispose of Gómez's argument.         The prosecutor argued that the jury
    could find that Gómez could have foreseen that "drug traffickers
    would be carrying weapons and doing what drug traffickers do, like
    Bryant Setiawan Ramos [sic] and Teton."            The prosecutor clarified
    on rebuttal that "in no way did [he] suggest that Mr. Jorge Gómez
    Gonzalez [sic] was involved in the murder of Teton."            The district
    court gave a prompt instruction that there was "no evidence that
    Jorge Gómez Gonzalez [sic] was anywhere near that overt act." Even
    if the statement were improper, this instruction was enough to
    cure any prejudice.      See Olszewski v. Spencer, 
    466 F.3d 47
    , 59–60
    (1st Cir. 2006) ("This court has consistently held that where the
    prosecutor unintentionally misstates the evidence during closing
    argument, a jury instruction ordinarily is sufficient to cure any
    potential prejudice, particularly where, as here, the instruction
    was   given    immediately   after    the     statement.")   (quoting   United
    States v. Bey, 
    188 F.3d 1
    , 9 (1st Cir. 1999)) (internal quotation
    marks omitted).
    - 42 -
    Setiawan objects, for the first time on appeal, that the
    prosecutor     repeatedly    referred     to    Teton's   murder    for   the
    impermissible    purpose    of   inflaming     the   jury's   passions.   In
    addition to the remark that Gómez points out, the prosecutor also
    said that "Teton is dead. . . . [He is a] victim[] of drug
    trafficking;" and "[one witness] testified that he was there that
    evening Bryant Setiawan Ramos [sic] ended the life of another
    seller named Teton.        And Teton hasn't come back."          Although we
    vacate Setiawan's convictions on separate grounds, we note that
    these comments were not improper because they served a non-
    inflammatory purpose.       Cf. Arrieta-Agressot v. United States, 
    3 F.3d 525
    , 527–28 (1st Cir. 1993) (citing examples of inflammatory
    language).     The prosecutor introduced evidence at trial linking
    Setiawan to Teton's murder, which was presented as an act in
    furtherance of the conspiracy.          Therefore, commenting on Teton's
    murder at several points in closing argument did not impermissibly
    "interject issues broader than [Setiawan's] guilt or innocence."
    
    Id. at 527
     (quoting United States v. Machor, 
    879 F.2d 945
    , 956
    (1st Cir. 1989)).
    In conclusion, we find no basis in the prosecutor's
    conduct on which to disturb the convictions.
    VIII.   Cumulative error
    Perhaps   sensing   that   they   are   fighting   a   rearguard
    action, all of the defendants contend that we must set aside their
    - 43 -
    convictions on a cumulative-error theory.              Because we vacate
    Setiawan's    convictions    for   the   reasons     discussed   above,   we
    consider the cumulative-error theory only as applied to Rosario,
    Hernández, and Gómez.
    "[C]umulative-error analysis is inappropriate when a
    party complains of the cumulative effects of non-errors."             United
    States v. Stokes, 
    124 F.3d 39
    , 43 (1st Cir. 1997) (citation
    omitted).     And even if there were a few isolated incidents of
    concern during this eight-week trial, "we will order a new trial
    on   the    basis   of   cumulative   error   only    if   multiple   errors
    synergistically achieve 'the critical mass necessary to cast a
    shadow upon the integrity of the verdict.'"            Williams v. Drake,
    
    146 F.3d 44
    , 49 (1st Cir. 1998) (quoting Sepulveda, 
    15 F.3d at 1196
    ). Therefore, we cannot reverse these convictions on the basis
    of cumulative error either.
    For the foregoing reasons, we affirm the convictions of
    Rosario, Hernández, and Gómez but vacate Setiawan's convictions
    and remand his case for proceedings consistent with this opinion.
    - 44 -