United States v. Gemma , 818 F.3d 23 ( 2016 )


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  •           United States Court of Appeals
    For the First Circuit
    No. 14-2120
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    MICHAEL GEMMA,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. George A. O'Toole, Jr., U.S. District Judge]
    Before
    Lynch, Circuit Judge,
    Souter, Associate Justice,*
    and Stahl, Circuit Judge.
    Elaine Mittleman, by Appointment of the Court, for appellant,
    and Michael Gemma, with whom Charles W. Rankin, Kerry A. Haberlin,
    and Rankin & Sultan, were on pro se brief.
    Mark T. Quinlivan, Assistant United States Attorney, with
    whom Carmen M. Ortiz, United States Attorney, was on brief, for
    appellee.
    March 30, 2016
    _________________
    * Hon. David H. Souter, Associate Justice (Ret.) of the
    Supreme Court of the United States, sitting by designation.
    STAHL,    Circuit Judge.      In 2012, Defendant-Appellant
    Michael Gemma was convicted in federal district court of sex
    trafficking and transporting minors to engage in prostitution.     In
    this appeal, Gemma makes a plethora of challenges to the district
    court's judgment.    Finding none of merit, we AFFIRM.
    I. Facts and Background
    In September 2011, Massachusetts State Police Trooper
    Dylan Morris spotted a red Nissan Altima with Pennsylvania tags
    traveling approximately 95 miles per hour on I-84.       After giving
    chase, the officer pulled the vehicle over.      Upon approaching the
    vehicle, the trooper requested identification from the driver,
    Michael Gemma, who produced a Florida driver's license and a car
    rental agreement.
    Trooper Morris also noticed that the female passenger,
    "A.L.," was not wearing a seatbelt.     Because of this, Morris asked
    her for identification in order to cite her for the violation.
    A.L. informed the trooper that she did not have her I.D., but
    stated that her name was "Ashley Torres."        Morris asked for her
    date of birth.   A.L. responded "December 23."     When asked for the
    year, A.L. responded "1992?," with a rising vocal inflection as
    though her birth year was a question.
    Trooper Morris then asked A.L. to step out of the car so
    that he could speak with her separately.       A.L. told Morris that
    she had moved back to Boston from Puerto Rico, gave her mother's
    - 2 -
    address, and indicated that she had known Gemma for about two
    years.   Trooper Morris returned to the vehicle and asked Gemma
    about A.L.    Gemma responded that he knew only her first name and
    had known her only for about a month.
    Trooper Morris later testified that, at this point, he
    noticed a faint odor of raw marijuana coming from the interior of
    the vehicle.       Morris asked Gemma to step out of the vehicle,
    advised him of his Miranda rights, and proceeded to conduct a
    thorough search of the vehicle, including the trunk.             Inside the
    vehicle, Morris observed lingerie, high heel shoes, a quantity of
    condoms, and a laptop computer, but no marijuana.
    Around this time, Trooper Scott Shea arrived at the
    scene.      Shea   ran   Gemma's   driver's     license   information      and
    discovered    that   his   right   to     operate   a   motor   vehicle    in
    Massachusetts had been suspended.          Gemma was placed under arrest
    for driving with a suspended license.
    Trooper Morris then resumed questioning A.L. about her
    identity.    A.L. provided her mother's name and address, and said
    that her mother's phone number was stored in her cell phone, which
    was still in the vehicle. With A.L.'s permission, Morris retrieved
    the phone from the car so that A.L. could call her mother.                When
    A.L. turned the phone on, Morris noticed text messages, such as
    "Are you available for an outcall?" and "I have $200."              Trooper
    Morris recognized these messages as consistent with prostitution.
    - 3 -
    Morris then spoke on the phone with A.L.'s mother, who provided
    A.L.'s true name, informed him that she was sixteen years old, and
    advised him that A.L. had run away from Department of Children and
    Families ("DCF") custody.        A.L.'s mother also informed him that
    there was a Child-in-Need-of-Services warrant outstanding for her.
    The troopers took both Gemma and A.L. back to the state police
    barracks in separate cruisers.
    Back    at   the   barracks,   Morris     interviewed    A.L.,     who
    revealed that she and Gemma were returning from New York and New
    Jersey   where    Gemma   had   been   posting      internet    advertisements
    offering sex with her.          Trooper Morris later found ads on the
    internet for sex that showed A.L.'s photograph and contained A.L.'s
    or Gemma's phone number. During police questioning, Gemma admitted
    that A.L. was a prostitute, but he denied any involvement.
    On May 17, 2012, Gemma was indicted in the United States
    District   Court    for   the    District      of   Massachusetts       for   sex
    trafficking of children or by force, fraud, or coercion, and aiding
    and abetting, in violation of 18 U.S.C. § 1591(a) and 18 U.S.C.
    § 2 (Count 1), and transporting minors to engage in prostitution
    and aiding and abetting, in violation of 18 U.S.C. § 2423(a) and
    18 U.S.C. § 2 (Count 2).         Before trial, Gemma moved to suppress
    all   physical    and   testimonial    evidence      deriving    from    Trooper
    Morris' search of the Nissan Altima.        The district court partially
    granted this motion, excluding the contents of the defendant's
    - 4 -
    laptop and cell phone as well as Trooper Morris' observations.
    The court, however, declined to suppress A.L.'s cell phone and the
    contents thereof. The court held that neither party had adequately
    addressed the circumstances of its seizure and found that the phone
    had    been    taken   with   A.L.'s    consent.      Because   Gemma    had    "no
    possessory interest in A.L.'s cell phone," the court held that he
    lacked standing to challenge its seizure and subsequent search.
    At the start of the trial, as part of the preliminary
    instructions to the jury, the court read the allegations of the
    indictment.        This reading included the charges of aiding and
    abetting.       During the course of the trial, A.L. testified that she
    had run away from DCF custody and met the defendant through a
    friend.       The defendant had communicated with A.L. by text messages
    and Facebook.       A.L. testified that she told the defendant how old
    she was, and that her Facebook page listed her correct age.                    A.L.
    eventually went to stay with the defendant, who brought her to a
    hotel in Woburn, Massachusetts and introduced her to a pimp who
    went by the name "Rich Dollar" and a prostitute, Nicki.                 According
    to A.L., the defendant then took "sexual" pictures of her with his
    cell    phone,     brought    her      to   another   hotel     in   Shrewsbury,
    Massachusetts, and instructed Nicki to explain to A.L. that she
    had been brought there to exchange sex for money.                     After the
    defendant posted ads on the internet, A.L. began to receive calls
    and texts from men who wanted to pay to have sex with her.
    - 5 -
    A.L. testified that she initially refused these calls,
    but, after Gemma threatened to hit her if she did not answer them,
    she thereafter engaged in prostitution, giving the money paid for
    her services to the defendant.   According to A.L., Gemma continued
    to threaten her, telling her that if she told anyone what she was
    doing, she would not like the outcome.     She also testified that
    when Gemma brought her to New York and New Jersey, she told him
    that she did not want to have sex for money anymore and threatened
    to call the police.   In response, Gemma pushed A.L. into a car,
    causing her to hit her head and suffer a slight concussion.
    At the trial's conclusion, the district court provided
    its final jury instructions.     For Count 1, the court explained
    that there were two theories under which the government could prove
    its sex trafficking case.      The first theory, which the court
    referred to as "Alternative 1A," was summarized as "sex trafficking
    by force, fraud or coercion."     The second theory, "Alternative
    1B," required proving that "the defendant knew or recklessly
    disregarded the fact that A.L. was under the age of 18 and would
    be caused by anyone, not necessarily the defendant, to engage in
    a commercial sex act."   This knowledge element could be proven by
    showing that "[t]he defendant actually knew that A.L. was under
    the age of 18; that he recklessly disregarded facts that would
    have given him that knowledge; or, . . . that he had a reasonable
    opportunity to observe A.L. in the course of events."
    - 6 -
    The court then instructed the jury on Count 2, explaining
    that the government must prove the transportation of a minor to
    engage in prostitution by showing "[1] that the defendant knowingly
    transported A.L. in interstate or foreign commerce; [2] that he
    did so with an intent that A.L. would engage in prostitution; and,
    [3] that A.L. had not attained the age of 18 years."     The court
    instructed that the government needed to prove A.L.'s age, but not
    the defendant's knowledge of A.L.'s age.
    Neither the court's final jury instructions, nor the
    jury form, mentioned a charge of aiding and abetting.        After
    deliberations, the jury found the defendant guilty on each count
    and found that the government had proven his guilt under both
    alternative theories for liability under Count 1.
    II. Analysis
    On appeal, Gemma raises a number of challenges to the
    judgment of the district court.1    In short, the defendant argues
    (1) that his indictment was defective based on its failure to
    allege facts to support the aiding and abetting charges; (2) that
    the district court abused its discretion in denying his motion to
    exclude evidence from A.L.'s cell phone; (3) that the district
    1 These challenges were raised by the defendant's appointed
    appellate counsel as well as by the defendant in a pro se capacity
    with assistance from his trial counsel.         For the sake of
    convenience, we refer to these challenges collectively as the
    defendant's challenges.
    - 7 -
    court abused its discretion in denying his motion for production
    of DCF records that purportedly would show that A.L. had previously
    offered men sex in exchange for a place to stay; (4) that the
    district court abused its discretion in admitting evidence that he
    had prostituted and assaulted another woman named "Faye"; (5) that
    the government improperly commented on his failure to take the
    stand in its closing argument; and (6) that the district court
    erred in instructing the jury regarding the knowledge requirement
    of § 1591(a).   We address these challenges seriatim.
    A.   Defective Indictment
    The defendant alleges error from the outset, pointing
    first to the indictment, which he contends was defective because
    it failed to provide facts to support the charges of aiding and
    abetting contained within each count.          Because Gemma failed to
    timely object to the indictment,2 we review only for plain error.
    United States v. Laureano-Pérez, 
    797 F.3d 45
    , 60 (1st Cir. 2015).
    Thus, Gemma must show that "(1) an error occurred; (2) which was
    clear or obvious; and both (3) affected [his] substantial rights;
    and (4) seriously impaired the fairness, integrity, or public
    reputation of judicial proceedings."     
    Id. 2 Under
    Fed. R. Crim. P. 12(b)(3)(B), objections to the
    sufficiency of an indictment "must be raised by pretrial motion if
    the basis for the motion is then reasonably available and the
    motion can be determined without a trial on the merits."
    - 8 -
    "[A]n indictment is sufficient if it, first, contains
    the elements of the offense charged and fairly informs a defendant
    of the charge against which he must defend, and, second, enables
    him    to   plead   an    acquittal   or    conviction         in   bar   of   future
    prosecutions for the same offense."            United States v. Serino, 
    835 F.2d 924
    , 929 (1st Cir. 1987) (alteration in original) (quoting
    Hamling v. United States, 
    418 U.S. 87
    , 117 (1974)). The indictment
    should "inform the court of the facts alleged" and will generally
    be sufficient if it "'set[s] forth the offense in the words of the
    statute itself,' as long as those words set forth all the elements
    of the offense without any uncertainty or ambiguity." 
    Id. (quoting Hamling,
    418 U.S. at 117).
    Gemma points out that the indictment, and the court's
    recitation of the charges to the jury, included allegations of
    aiding and abetting within each count.                   Gemma argues that the
    government's inclusion of the aiding and abetting charges and
    failure to identify or allege the existence of a principal or
    codefendant rendered the indictment defective and constitutes
    reversible error.         United States v. Martin, 
    747 F.2d 1404
    , 1407
    (11th Cir. 1984) (noting that, because "[t]he only person charged
    with    committing       [the]   offense[s]        is   [the    defendant],"     the
    indictment "can be read . . . as charging an offense not known to
    the law, i.e., [the defendant's] aiding and abetting himself").
    - 9 -
    Although Gemma raises a potentially interesting question, we need
    not reach it because his contention stumbles from the start.
    First, Gemma cannot show plain error.      The courts of
    appeals have divided over whether an indictment that alleges aiding
    and abetting is defective if it does not identify a principal or
    codefendant.   Compare United States v. Somers, 
    950 F.2d 1279
    , 1283
    (7th Cir. 1991) (finding an indictment charging aiding and abetting
    was not required to name a principal or codefendant) and United
    States v. Mehrmanesh, 
    689 F.2d 822
    , 835 (9th Cir. 1982) (finding
    aiding and abetting indictment not fatally defective where it
    failed to identify a principal), with United States v. Garcia-
    Paulin, 
    627 F.3d 127
    , 133-34 (5th Cir. 2010) (finding indictment
    had insufficient factual basis where the government identified no
    co-conspirators or principal whom the defendant aided and abetted)
    and 
    Martin, 747 F.2d at 1407-08
    (finding indictment insufficient
    because no principal or codefendant was named and one cannot aid
    or abet himself).    Where this Court has not addressed an issue,
    and the law is unclear, the defendant cannot show plain error.
    United States v. Diaz, 
    285 F.3d 92
    , 96 (1st Cir. 2002) ("If a
    circuit conflict exists on a question, and the law is unsettled in
    the circuit in which the appeal was taken, any error cannot be
    plain or obvious.").
    Second, even if this Court were to adopt Gemma's view
    of the law, his appeal would still fail.   As the Eleventh Circuit
    - 10 -
    has indicated, a denial of a motion to dismiss an indictment "is
    not necessarily reversible error; defects in an indictment can be
    harmless or can be cured by instructions to the jury."                 
    Martin, 747 F.2d at 1407
    .         Here, the court omitted any instructions on
    aiding and abetting in its final charge and the verdict form did
    not refer to aiding and abetting with respect to either count.
    Gemma, therefore, cannot show that his substantial rights were
    affected   or     that    any   possible   error   seriously    impaired   the
    fairness, integrity, or public reputation of judicial proceedings.
    Because Gemma cannot show plain error, and any error would be
    harmless, his argument fails.
    B.        Motion to Exclude/Suppress
    Before trial, Gemma moved to suppress the physical and
    testimonial evidence derived from the search of his vehicle.               The
    district court granted the motion in part, but declined to suppress
    evidence from A.L.'s cell phone.             The defendant later filed a
    motion    to    exclude   evidence   derived    from   A.L.'s   cell   phone,
    reiterating, inter alia, that the evidence was seized in violation
    of the Fourth Amendment.         The court summarily denied this claim.
    Gemma contends that the district court erred because he
    had a reasonable expectation of privacy in the vehicle, A.L. lacked
    authority to consent to the seizure of her phone from the vehicle,
    and the phone should be suppressed as "fruits" of Trooper Morris'
    initial, unlawful search.         Although the parties battle at length
    - 11 -
    over the proper standard of review,3 "we would find no error in
    the district court's decision even if our review were de novo."
    United States v. Allen, 
    573 F.3d 42
    , 53 (1st Cir. 2009).
    The evidence supports the denial of Gemma's motion to
    suppress. United States v. Boskic, 
    545 F.3d 69
    , 77 (1st Cir. 2008)
    ("If any reasonable view of the evidence supports the denial of a
    motion to suppress, we will affirm the denial.").                A.L.'s phone
    was not seized during the initial search, which the court found
    unlawful.       Instead, at the time A.L.'s phone was retrieved so that
    she could call her mother, Morris found himself on the side of a
    major       interstate   highway   facing   a   now-unoccupied   vehicle,   an
    3
    The government argues that Gemma's motion to exclude on the
    basis of the Fourth Amendment is better understood as a motion to
    reconsider the court's prior denial of his motion to suppress. In
    his motion to exclude, Gemma specifically "request[ed] leave . . .
    to raise this constitutional issue late" because "counsel was not
    fully aware of the significance of . . . A.L.'s cell phone . . .
    at the time of the litigation of [the] motion to suppress." A
    motion for reconsideration is not to be used as "a vehicle for a
    party to undo its own procedural failures."       United States v.
    Allen, 
    573 F.3d 42
    , 53 (1st Cir. 2009) (quoting Iverson v. City of
    Boston, 
    452 F.3d 94
    , 104 (1st Cir. 2006)). Instead, such motions
    are appropriate only "if the moving party presents newly discovered
    evidence, if there has been an intervening change in the law, or
    if the movant can demonstrate that the original decision was based
    on a manifest error of law or was clearly unjust." 
    Id. Because the
    defendant's motion did little more than introduce an argument
    that was readily available at the time of the motion to suppress,
    the government contends that we should review the district court's
    summary dismissal based on a waived argument for abuse of
    discretion. 
    Id. In response,
    Gemma argues that an error of law
    is, by definition, an abuse of discretion, United States v.
    Carpenter, 
    781 F.3d 599
    , 608 n.8 (1st Cir. 2015), and that we
    should therefore review the merits of his Fourth Amendment argument
    de novo.
    - 12 -
    arrested driver, and an unidentified and seemingly underage girl
    in a potentially unsafe situation.
    In these circumstances, the government is right to rely
    on the Fourth Amendment's general reasonableness command.   United
    States v. Rodriguez-Morales, 
    929 F.2d 780
    , 783 (1st Cir. 1991).
    The Supreme Court recognized several decades ago that "[l]ocal
    police officers, unlike federal officers, frequently . . . engage
    in what, for want of a better term, may be described as community
    caretaking functions."   Cady v. Dombrowski, 
    413 U.S. 433
    , 441
    (1973).   Apart from investigating crime, police are "expected to
    aid those in distress, combat actual hazards, prevent potential
    hazards from materializing and provide an infinite variety of
    services to preserve and protect public safety."       Rodriguez–
    
    Morales, 929 F.2d at 784
    –85.
    Here, Morris encountered the unfolding of "unexpected
    circumstances present[ing] [a] transient hazard" that he had to
    "deal[] with on the spot." 
    Id. at 787.
    Viewed objectively, Morris
    had "solid, noninvestigatory reasons" for retrieving A.L.'s cell
    phone from the vehicle so that she could call her mother.       
    Id. A.L. did
    not have identification, could not make use of the
    defendant's vehicle, and was now effectively stranded.      Gemma's
    and A.L.'s conflicting answers suggested that A.L. might be in a
    potentially compromised position and require assistance "separate
    and apart" from an investigation into any crime.     
    Id. at 784.
    - 13 -
    Finally, A.L.'s hesitation with respect to her age and her response
    that she lived with her mother all suggested that she was a minor
    who should be returned to the care of a confirmed legal custodian,
    whoever and wherever that person may be.               We will not find the
    officer's extempore actions unreasonable in circumstances such as
    existed here.      See 
    id. at 786
    ("There is no requirement that . . .
    officers must select the least intrusive way of fulfilling their
    community caretaking responsibilities.").
    Because Morris retrieved the phone and witnessed the
    text messages suggestive of sex trafficking activity in the course
    of his community caretaking duties, the evidence was properly
    admissible.       
    Id. at 785
    ("[E]vidence which comes to light during
    the   due    execution     of   the   caretaking    function    is   ordinarily
    admissible at trial.").          Although Morris' original search of the
    car may have been unlawful, Gemma introduced no evidence or
    testimony suggesting that Morris' later retrieval of A.L.'s phone
    was a pretext for conducting an additional search of the vehicle
    or of the phone itself.          
    Id. at 787
    (holding that, so long as an
    officer's actions are "not a mere subterfuge for investigation,
    the coexistence of investigatory and caretaking motives will not
    invalidate the [search or] seizure").
    On   this     record,    Gemma's     constitutional     challenge,
    whether     couched   as   a    motion   to   suppress,   to   exclude,   or   to
    reconsider, would fail any applicable standard of review.
    - 14 -
    C.      Production of Records
    Gemma next argues that the district court erred by
    denying his motion to compel the production of classified DCF
    records.     The Court reviews the denial of a defendant's discovery
    motion for abuse of discretion.             United States v. Cartagena, 
    593 F.3d 104
    , 112 (1st Cir. 2010).4
    Prior    to   trial,   Gemma    requested   the   production   of
    records in the possession of DCF.             A magistrate judge denied the
    motion, finding that Gemma had failed to show that the requested
    records were relevant or to describe the documents with any
    specificity.     In addition, the magistrate judge noted that, to the
    extent    the   DCF   records    contained     information   regarding   prior
    instances of A.L. engaging in prostitution, such information might
    not be admissible because Federal Rule of Evidence 412(a)(1)
    "prohibits the admission of 'evidence offered to prove that a
    victim engaged in other sexual behavior' in a case involving
    allegations of sexual misconduct."
    Gemma thereafter filed a renewed motion for production
    in which he argued that the exclusion of evidence that A.L. had
    previously      engaged    in   prostitution    before   meeting   him   would
    4 Because neither party requests de novo review, the question
    of whether this standard would apply is waived. Cf. United States
    v. Rivera, 
    799 F.3d 180
    , 184 (2d Cir. 2015) ("[W]e review
    interpretations of law de novo, including whether an evidentiary
    ruling violates a defendant's constitutional rights.").
    - 15 -
    violate his Fifth and Sixth Amendment rights to confront her by
    cross-examination and to have a meaningful opportunity to present
    a complete defense.      After reviewing a set of records submitted ex
    parte and under seal, the court ordered the government to disclose
    an email from a social worker that discussed an incident involving
    A.L.   The email stated that another young woman who had been on
    the run with A.L. told this social worker that A.L. had been
    wandering the streets offering to sleep with men in exchange for
    a place to stay.         At trial, A.L. denied these statements and
    testified that she did not remember the names of the other two
    young women she was with at the time.          The defendant then moved
    for disclosure of records identifying these two young women.          The
    court denied the motion, calling it "speculative" that additional
    evidence would become available and noting that the defense already
    had an opportunity to cross-examine A.L. about the issue.
    Under Federal Rule of Evidence 412(a), "evidence offered
    to prove that a victim engaged in other sexual behavior" is
    generally prohibited in a "criminal proceeding involving alleged
    sexual misconduct."       This rule "aims to safeguard the alleged
    victim against the invasion of privacy, potential embarrassment
    and sexual stereotyping that is associated with public disclosure
    of   intimate   sexual    details."     Fed.   R.   Evid.   412   advisory
    committee's note to 1994 amendment.       Rule 412(b)(1)(C) provides an
    - 16 -
    exception     for     "evidence       whose    exclusion     would    violate     the
    defendant's constitutional rights."
    "The Sixth Amendment to the Constitution guarantees the
    right of an accused in a criminal prosecution to be confronted
    with the witnesses against him."               Davis v. Alaska, 
    415 U.S. 308
    ,
    315 (1974).      Supreme Court "cases construing the (confrontation)
    clause hold that a primary interest secured by it is the right of
    cross-examination."        Douglas v. Alabama, 
    380 U.S. 415
    , 418 (1965).
    Additionally, the Fifth Amendment guarantees the right to a fair
    trial, and courts have "long interpreted this standard of fairness
    to require that criminal defendants be afforded a meaningful
    opportunity      to    present    a    complete       defense."      California    v.
    Trombetta, 
    467 U.S. 479
    , 485 (1984).                   In order to protect this
    right, "[a] defendant has a constitutionally protected privilege
    to request and obtain from the prosecution evidence that is either
    material    to   the    guilt    of    the    defendant     or    relevant   to   the
    punishment to be imposed."             Brady v. Maryland, 
    373 U.S. 83
    , 87
    (1963).    "Less clear . . . is the extent to which the Due Process
    Clause imposes on the government the additional responsibility of
    guaranteeing criminal defendants access to exculpatory evidence
    beyond the government's possession."              
    Trombetta, 467 U.S. at 486
    .
    On appeal, Gemma challenges the court's denial of his
    request for the production of additional evidence pertaining to
    A.L.'s alleged prior prostitution.              We can find no error.        First,
    - 17 -
    the evidence sought is either entirely irrelevant or of such slight
    probative value in comparison to its prejudicial effect that a
    decision to exclude it would not violate Gemma's constitutional
    rights.   A number of other circuits have held that evidence of
    prior prostitution is irrelevant to a charge under § 1591(a), and
    thus is properly barred.     See United States v. Rivera, 
    799 F.3d 180
    , 185 (2d Cir. 2015); United States v. Roy, 
    781 F.3d 416
    , 420
    (8th Cir. 2015); United States v. Cephus, 
    684 F.3d 703
    , 708 (7th
    Cir. 2012); United States v. Valenzuela, 
    495 F. App'x 817
    , 819-20
    (9th Cir. 2012) (unpublished).
    Gemma   contends   that      he   did    not   force   A.L.     into
    prostitution and that evidence of her prior sexual behavior would
    shore up his cause.      Not so.       "The victim's participation in
    prostitution   either   before   or    after   the   time   period   in   the
    indictment has no relevance to whether [Gemma] beat her, threatened
    her, and took the money she made from prostitution in order to
    cause her to engage in commercial sex."           
    Roy, 781 F.3d at 420
    .
    Nor is Gemma's contention significantly strengthened by
    shifting away from a coercion basis for criminal liability.
    Because the victim[] [was a] minor[] and could
    not legally consent, the government did not
    need to prove the elements of fraud, force, or
    coercion, which are required for adult
    victims.   Instead, the government was only
    required to prove [Gemma] knowingly recruited,
    enticed, harbored, transported, provided, or
    obtained a minor, knowing the minor would be
    caused to engage in commercial sex acts.
    - 18 -
    United   States   v.    Elbert,   
    561 F.3d 771
    ,    777   (8th    Cir.   2009)
    (citations omitted).
    Moreover, even if we were to accept Gemma's contention
    that the evidence had some probative value with respect to his
    relationship with A.L., the balance of probative and prejudicial
    effect is such that the court's decision could hardly be said to
    have violated his constitutional rights.                 See 
    id. In this
    case,
    there was no dispute that A.L. engaged in prostitution; the only
    question was whether Gemma acted as her pimp. Rather than evincing
    Gemma's intent at the time of the offense, introducing A.L.'s
    alleged acts of prior prostitution would have only strengthened
    Gemma's hand by reinforcing a narrative that A.L. acted consistent
    with prior sexual behavior.         This evidence and line of reasoning
    falls squarely within a class deemed so extremely prejudicial as
    to warrant special treatment under the Federal Rules of Evidence.
    Second, this is not a case wherein a discrete piece of
    identified evidence was deemed inadmissible by the district court;
    rather, this is a case where the defendant's request for additional
    discovery was denied.      As the district court noted, this rendered
    the   defendant's      request    more   speculative        than   specific     and
    weakened an already attenuated basis for his motion.
    Finally, the requested evidence was not only speculative
    and likely inadmissible, but bordered on cumulative.                   As the court
    - 19 -
    emphasized, the defense already had an opportunity to cross-
    examine A.L. about her alleged acts of prior prostitution.                 This
    is arguably more than Gemma was entitled to in the first place.
    In sum, Gemma has a right to cross-examine the witnesses
    against him and a right to present a complete defense, but these
    do   not   create   an   auxiliary   right   to   have   all   discovery    and
    evidentiary rulings turn in his favor.            If Gemma was deprived of
    anything, it was the opportunity to seek unspecified and presumably
    inadmissible evidence to engage in additional cross examination on
    a topic of questionable relevance to begin with.5
    D.    Evidence Regarding Faye
    In what might be viewed as the inverse of the challenge
    above, Gemma also argues that the court erred in admitting evidence
    that he had previously prostituted and physically abused a woman
    named Faye. Gemma points to Federal Rule of Evidence 404(b), which
    provides that "[e]vidence of a crime, wrong, or other act is not
    admissible to prove a person's character in order to show that on
    a particular occasion the person acted in accordance with the
    character."
    5Gemma alternatively asserts that, at a minimum, the district
    court should have reviewed the additional records in camera. But
    Gemma did not make that request before the district court and, for
    the same reasons articulated above, cannot show plain error on
    appeal.
    - 20 -
    This Court reviews a ruling that evidence was admitted
    consistent with Federal Rules of Evidence 404(b) and 403 for abuse
    of discretion.    United States v. Moon, 
    802 F.3d 135
    , 144 (1st Cir.
    2015).     "Only     rarely--and        in      extraordinarily          compelling
    circumstances--will we, from the vista of a cold appellate record,
    reverse a district court's on-the-spot judgment concerning the
    relative weighing of probative value and unfair effect."                    United
    States v. Baynard, 
    642 F.3d 59
    , 63 (1st Cir. 2011).
    Under    Federal    Rule     of    Evidence    404(b),     evidence    of
    previous crimes or acts may be admitted for the purpose of "proving
    motive,   opportunity,       intent,        preparation,    plan,        knowledge,
    identity, absence of mistake, or lack of accident."                  In deciding
    whether to admit such evidence, "[t]he court may exclude relevant
    evidence if its probative value is substantially outweighed by a
    danger of one or more of the following: unfair prejudice, confusing
    the issues, misleading the jury, undue delay, wasting time, or
    needlessly presenting cumulative evidence."              Fed. R. Evid. 403.
    A critical factual dispute in this case was whether the
    relationship   between   Gemma    and       A.L.   was   that   of   a    pimp   and
    prostitute. Therefore, evidence that Gemma was in the prostitution
    business and exercised control over prostitutes other than A.L.,
    sometimes by means of physical violence, was highly probative of
    Gemma's intent.    See United States v. Jarrett, 
    956 F.2d 864
    , 866-
    67 (8th Cir. 1992) (holding testimony by witnesses that defendant
    - 21 -
    approached them seeking to secure their services as prostitutes in
    his employ was admissible under Rule 404(b) to show knowledge and
    intent); United States v. Love, 
    449 F. App'x 338
    , 339-40 (5th Cir.
    2011) (unpublished) (holding evidence that defendant prostituted
    another female a year prior to crime admissible because defendant
    contested his intent to prostitute the victim).
    At trial, the district court permitted A.L. to testify
    that she knew Faye, that Faye was a girl who used to prostitute
    for   Gemma,   and   that   Gemma   had   an   argument   with   Faye   about
    prostitution and A.L. saw Gemma slap her.           Unlike A.L.'s alleged
    prior prostitution activities, which shed relatively little light
    on the disputed issue of Gemma's intent, Gemma's prior acts as a
    pimp were highly probative of his intent in the instant case.
    Although Gemma contends that the introduction of this
    evidence carried an unacceptable risk that the jury would find him
    guilty "because he was a bad person who deserved to be punished,"
    we are hardly convinced that the court abused its discretion in
    admitting the evidence given its probative value in answering the
    central question of this case.            To be sure, the similarity of
    "other acts" evidence "simultaneously establishes its relevance
    and heightens the possibility that the jury will draw an unfair
    inference of propensity."       United States v. Appolon, 
    715 F.3d 362
    ,
    374 (1st Cir. 2013).        However, "given the facts of this case and
    the notable similarity between the uncharged conduct and the basis
    - 22 -
    of [the defendant's] indictment," we find "that the district court
    properly evaluated the 'risk of an improper criminal propensity
    inference . . . in light of the totality of the circumstances.'"
    
    Id. (second alteration
    in original) (quoting United States v.
    Varoudakis, 
    223 F.3d 113
    , 123 (1st Cir. 2000)).
    E.    Prosecutorial Misconduct
    Gemma's penultimate challenge is to certain statements
    by   the   government     in   its   closing   argument    that   he   contends
    constituted prosecutorial misconduct.             During the government's
    closing, the prosecutor repeatedly pointed to the defendant's
    admission of certain facts, emphasizing that these facts were
    undisputed.    The defendant objected, arguing that these references
    improperly shifted the burden to the defendant, and requested a
    curative instruction. The district court found that an instruction
    was unnecessary given that the jury would be instructed on the
    government's burden of proof prior to deliberations.
    The defendant now argues that these remarks constituted
    improper comments on his failure to take the stand, in violation
    of his Fifth Amendment rights. Where a defendant contemporaneously
    objects on different grounds than those raised on appeal, the Court
    reviews the issue as an unpreserved objection for plain error.
    United States v. Bey, 
    188 F.3d 1
    , 10 (1st Cir. 1999).
    The   Fifth    Amendment     prohibits   the    government     from
    commenting on a defendant's exercise of his right to remain silent.
    - 23 -
    United States v. Robinson, 
    485 U.S. 25
    , 30 (1988); United States
    v. Zarauskas, ___ F.3d ___, 
    2016 WL 524250
    , at *4 (1st Cir. Feb.
    10, 2016).     References to evidence as undisputed can constitute a
    violation when the defendant is the only person who could logically
    dispute that evidence.     
    Bey, 188 F.3d at 9
    .   In deciding whether
    such comments violate the defendant's Fifth Amendment rights, we
    consider "whether, in the circumstances of the particular case,
    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. Glantz, 
    810 F.2d 316
    , 322 (1st Cir. 1987) (quoting United States
    v. Monaghan, 
    741 F.2d 1434
    , 1437 (D.C. Cir. 1984) (internal
    quotation marks omitted)).
    Here, the government stated that certain facts in the
    case were not in dispute because Gemma had admitted to them,
    particularly with respect to Count 2 of the indictment.
    You've heard a lot of disputed facts about
    [A.L.] and her history and her time with the
    defendant.   But before we get into what is
    disputed I want to briefly go over with [you]
    what's not disputed. [A.L.] was prostituted
    both in Massachusetts and in New Jersey.
    [A.L.] was 16 years old at the time.       The
    defendant met [A.L.] through a girl, M., who
    was 12 years old. Between September 27th and
    September 30th the defendant drove [A.L.] from
    Massachusetts to New York and New Jersey, and
    back   to  Massachusetts   for   purposes   of
    prostitution. These facts are not in dispute
    because the defendant admitted to them. These
    - 24 -
    facts are all you need to find the defendant
    guilty of Count 2. . . .
    You have the rental car documents. You have
    the toll transponder documents. You have the
    documents that show that this defendant rented
    a car on September 27th, and the documents
    that show that he drove from Massachusetts to
    New York and New Jersey and back. And more
    importantly, you have his admission that he
    drove [A.L.] and other girls to New York and
    New Jersey, and you have his admission that he
    knew [A.L.] and girls were engaged in
    prostitution. And you know that [A.L.] was 16
    at the time. This is all you need to convict
    him on Count 2. . . .
    There's also no dispute that the email account
    that posted these ads was the defendant's. He
    admitted them.   It's also not disputed that
    when she was posted in these ads, she was in
    hotel rooms rented by Michael Gemma. You have
    before you all of the documents that you need
    to prove that the defendant was indeed
    involved in prostituting [A.L.] (emphases
    added).
    Viewed in the context of the case, we can find no error, let alone
    plain error, in the court's decision to allow these comments.         The
    comments merely highlighted the defendant's own admissions, and
    the government tied the evidence that it said was undisputed to
    admissions    that   Gemma   made.   No   reasonable   jury   would   have
    understood these remarks as a comment on the defendant's failure
    to testify.     Taken together, "[t]he comment itself, the court's
    response, and the defendant's failure to object or to move for a
    dismissal or new trial indicate that the prosecutor's remark did
    - 25 -
    not refer to the defendant's failure to testify."          United States
    v. Lavoie, 
    721 F.2d 407
    , 408 (1st Cir. 1984).
    Finally, any lingering trace of doubt would have been
    put to rest by the district court, which instructed the jury at
    the end of the trial that a defendant in a criminal case has a
    constitutional right not to testify, and that the jury "may not
    under any circumstances draw any inference or presumption against
    the defendant from his decision not to testify." See United States
    v. Smith, 
    145 F.3d 458
    , 462 (1st Cir. 1998) ("We 'must presume
    that jurors, conscious of the gravity of their task, attend closely
    the particular language of the trial court's instructions in a
    criminal case, and that they follow those instructions.'" (quoting
    United States v. Houlihan, 
    92 F.3d 1271
    , 1287 (1st Cir. 1996))).
    For these reasons, Gemma's prosecutorial misconduct challenge
    fails.
    F.   Instruction Regarding § 1591(a)'s Knowledge Requirement
    Lastly,    Gemma   floats    an    argument    that       there   is
    "uncertainty"    regarding   the   knowledge   element   of     §    1591(a).
    Because the defendant did not object to the jury instruction after
    the charge was given but before deliberations began, we review for
    plain error.    See United States v. Santana–Rosa, 
    132 F.3d 860
    , 863
    n.1 (1st Cir. 1998); see also Fed. R. Crim. P. 30(d).
    The text of § 1591(a) proscribes two forms of sex
    trafficking: (1) sex trafficking involving a commercial sex act
    - 26 -
    induced by means of force, threats of force, fraud, or coercion,
    or a combination thereof; and (2) child sex trafficking in which
    the person induced to perform the commercial sex act is under the
    age of 18.     18 U.S.C. § 1591(a).        The mens rea elements for the
    two forms of sex trafficking are different.         Under the first form,
    a defendant must act knowingly, or in reckless disregard of the
    fact, that a commercial sex act was induced by means of force,
    threats of force, fraud, coercion, or any combination thereof.
    Under the second form, a defendant must act knowingly, or in
    reckless disregard of the fact, that the person induced to perform
    the commercial sex act was not 18 years old.         
    Id. With respect
    to
    this second form, Congress provided:
    In a prosecution under subsection (a)(1) in
    which   the   defendant   had   a  reasonable
    opportunity   to   observe   the  person   so
    recruited, enticed, harbored, transported,
    provided, obtained, maintained, patronized,
    or solicited, the Government need not prove
    that the defendant knew, or recklessly
    disregarded the fact, that the person had not
    attained the age of 18 years.
    
    Id. § 1591(c).
    The government charged Gemma with violating both forms
    of § 1591(a), the court instructed the jury on both theories of
    liability, and the court advised the jury that the government could
    prove the knowledge element under the second theory by showing (1)
    that the defendant actually knew A.L. was under 18; (2) that he
    recklessly    disregarded   facts   that    would   have   given   him   that
    - 27 -
    knowledge; or (3) that he had a reasonable opportunity to observe
    A.L. in the course of events.
    The   defendant     contends     that     this     instruction     was
    erroneous in light of our decision in United States v. Encarnación-
    Ruiz, 
    787 F.3d 581
    (1st Cir. 2015).          There, we examined whether an
    aider and abetter of the production of child pornography under 18
    U.S.C. § 2251(a), a strict liability crime for a principal, could
    be held liable without knowing that the victim was a minor.                    We
    held that he could not.        
    Id. at 591.
    Simply    put,   our   holding   in     Encarnación-Ruiz     has    no
    import here.      Not only are we examining an entirely separate
    statute, § 1591(a), but Gemma was convicted as a principal, not an
    aider and abetter.       Even more importantly, Gemma was convicted
    under both theories of § 1591(a) liability, meaning that any error
    pertaining to his knowledge of A.L.'s age would have been utterly
    harmless.      Once   again,    the   defendant's      basis    for   appeal    is
    distinctly unpersuasive and falls far short of that necessary to
    survive the rigors of plain-error review.
    III. Conclusion
    The judgment of the district court is AFFIRMED.
    - 28 -