United States v. Martavious Keys ( 2018 )


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  •      Case: 17-10746       Document: 00514606524         Page: 1    Date Filed: 08/20/2018
    IN THE UNITED STATES COURT OF APPEALS
    FOR THE FIFTH CIRCUIT
    United States Court of Appeals
    Fifth Circuit
    FILED
    No. 17-10746                           August 20, 2018
    Lyle W. Cayce
    UNITED STATES OF AMERICA,                                                          Clerk
    Plaintiff - Appellee
    v.
    MARTAVIOUS DETREL BANKS KEYS, also known as Cheese, also known
    as Matt,
    Defendant - Appellant
    Appeal from the United States District Court
    for the Northern District of Texas
    USDC No. 3:16-CR-244-1
    Before CLEMENT, HIGGINSON, and HO, Circuit Judges. *
    PER CURIAM:*
    Martavious Detrel Banks Keys was convicted by a jury of two counts of
    sex trafficking of a child and one count of sex trafficking through force, fraud,
    or coercion in violation of 18 U.S.C. § 1591. Keys appeals, contending that
    Count One and Count Three of the indictment were multiplicitous and that the
    * Judge Ho concurs in the judgment only.
    ** Pursuant to 5TH CIR. R. 47.5, the court has determined that this opinion should not
    be published and is not precedent except under the limited circumstances set forth in 5TH
    CIR. R. 47.5.4.
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    No. 17-10746
    district court erred in admitting the testimony of two law enforcement officers.
    For the reasons stated below, we AFFIRM.
    I
    On March 13, 2015, Jane Doe 1 and Jane Doe 2 left the Nexus Recovery
    Center, a substance abuse treatment facility in Dallas, Texas. The girls were
    15 years old and 14 years old, respectively. At a gas station they reached on
    foot, Jane Does 1 and 2 met an adult male they identified as “Black,” who
    offered to take them back to his apartment and provide them with narcotics.
    Jane Doe 1 told Black that the girls were both 15 years old. The girls stayed at
    Black’s apartment for approximately three days. During that time, Black and
    another man provided Jane Does 1 and 2 with methamphetamine and crack
    cocaine, and the girls engaged in sex acts with the two men. While staying at
    Black’s apartment, Jane Does 1 and 2 also met another friend of Black’s, later
    identified as Keys or “Cheese.” Black later drove the girls to an abandoned area
    and sold them to Keys. 1
    Keys took the girls back to his apartment, where he created a
    Backpage.com 2 ad inviting potential patrons to engage in commercial sex with
    an apparently fictional individual named “Kacy.” Using a number of prepaid
    cell phones, Keys arranged for men to come to his apartment to engage in sex
    acts with the girls in exchange for money. When the men would arrive at Keys’s
    apartment, Jane Doe 1 would greet them at the door and lead them to a
    bedroom where she would instruct them to choose between herself and Jane
    Doe 2. Both girls would be naked. After the men chose Jane Doe 1, Jane Doe 2,
    1  Jane Doe 1 told investigators that Keys purchased Jane Doe 1 for $240 and Jane Doe
    2 for $47.
    2 Backpage.com “is Craigslist for the sex trade.” In 2018, Backpage.com pleaded guilty
    to             human               trafficking             in            Texas.           See
    https://www.texasattorneygeneral.gov/news/releases/backpage.com-pleads-guilty-to-human-
    trafficking-in-texas.
    2
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    or both girls, Jane Doe 1 would collect the cash and pass it under the bathroom
    door to Keys, who would be waiting on the kitchen side. Jane Doe 2 estimates
    that she engaged in commercial sex acts roughly ten times total while at Keys’s
    home. Jane Doe 1 testified that, on average, she engaged in commercial sex
    acts sixteen times per day. On at least one occasion, her vagina was so swollen
    and bleeding that Keys suggested she insert cosmetic sponges inside herself
    or, alternatively, have anal sex so that she could continue to entertain
    customers. Keys kept all of the money the girls earned.
    At some point, Jane Doe 1 and Jane Doe 2 told Keys that they were only
    15 and 14 years old. He continued to have the girls engage in commercial sex
    acts with men. Keys also raped Jane Doe 1 on multiple occasions and Jane Doe
    2 at least once. While both girls were still at his home, Keys left for several
    days, apparently to pick up a Chevrolet Tahoe he was able to purchase with
    the money earned by the girls. His friends monitored the girls while he was
    gone. Keys and his friends provided Jane Does 1 and 2 with a constant supply
    of crack cocaine. Though Jane Doe 2 initially wanted to use drugs, she
    eventually became uncomfortable and wanted to stop and “get out of there.”
    Keys and Jane Doe 1 pressed her to continue using, and Keys became violent.
    Jane Doe 2 testified that when she told Keys she no longer wanted to engage
    in commercial sex acts, Keys choked her, slammed her against the wall and
    said: “If you don’t do what you’re supposed to do, we’re going to have a
    problem.”
    Jane Doe 2 was able to leave Keys’s apartment approximately two weeks
    after he purchased her from Black. After Keys threatened her, Jane Doe 2
    asked the next customer who came to the apartment if he would help her get
    out. The customer apparently paid Keys to let him leave with Jane Doe 2. Jane
    Doe 1 remained with Keys for roughly two weeks after Jane Doe 2 left, during
    which time Keys began shuttling her between various motels. She continued
    3
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    to engage in sex acts with various customers and Keys collected the money.
    But the character of the relationship between Keys and Jane Doe 1 shifted.
    Keys became more violent and controlling. Keys regularly abused Jane Doe 1
    and pointed a gun at her; she testified that she did not feel free to leave. Jane
    Doe began to fear for her life. She believed, however, that if she ran away, Keys
    would come after her. At one point, Keys posted an ad offering commercial sex
    to customers in Houston on Backpage.com and drove Jane Doe 1 there in his
    Tahoe. The trip was cut short when Keys got into a physical altercation with a
    friend and beat him severely.
    Though Jane Doe 1 was afraid Keys would find her if she attempted to
    leave him, an older prostitute ultimately convinced her that leaving Keys was
    the safest choice. The woman took Jane Doe 1 to another apartment. Keys
    showed up less than a day later with three friends and a gun, which he pointed
    in Jane Doe 1’s face. A man staying at the apartment with Jane Doe 1 and the
    older prostitute came out with a large gun and forced the men to leave without
    Jane Doe 1. For the next week, she could not leave the house alone because
    Keys had friends patrolling the street. Jane Doe 1 was recovered by the police
    roughly one week later, on May 4, 2015. She was severely sleep-deprived,
    malnourished, and suffering from sexually transmitted diseases.
    On May 5, officers executed a search warrant of Keys’s residence. Among
    other items, officers retrieved a semiautomatic pistol, sex toys, a laptop, and
    multiple cell phones. The officers interviewed Jane Does 1 and 2 extensively,
    and they were able to locate several Backpage.com ads posted by Keys that fit
    the description provided by Jane Doe 1. Records subpoenaed by law
    enforcement from motels identified by Jane Doe 1 confirmed that Keys had
    paid for several rooms during the relevant time frame. In May 2015, Detective
    Kevin Halbert called Keys for an interview, and Keys initially agreed to meet.
    Keys did not show up for the meeting, and law enforcement spent the next year
    4
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    attempting to locate him. Halbert interviewed Keys in person for the first time
    in May 2016. Keys admitted to Halbert that he knew the girls, that they had
    stayed with him for a period of time, that they engaged in prostitution, and
    that he discovered at some point that they were underage. He claimed that
    when he found out Jane Does 1 and 2 were only 15 and 14 years old, he had
    them leave his apartment. Keys also admitted that he had set up the
    Backpage.com ads. Keys maintained, however, that he was a passive observer
    and was simply “trying to take care of [the girls]”—he denied that he facilitated
    their engagement in commercial sex. At first, Keys denied taking any money
    from the girls; eventually, he admitted that he accepted money from them,
    though he claimed it was only so that he could feed and house them.
    Keys was ultimately indicted on three counts of sex trafficking. Count
    One charged Keys with sex trafficking of children under 18 U.S.C. § 1591(a)
    and (b)(2) for causing Jane Doe 1, who was under 18 years of age, to engage in
    commercial sex acts. Count Two charged Keys with sex trafficking of children
    under § 1591(a) and (b)(2) for causing Jane Doe 2, also a minor, to engage in
    commercial sex acts. Count Three charged Keys with sex trafficking Jane Doe
    1 through force, fraud, or coercion under § 1591(a)(1) and (b)(1)–(2).
    Prior to trial, the defense filed a motion to dismiss Count One to avoid
    multiplicity, arguing that Counts One and Three punish the same criminal
    offense in violation of the Double Jeopardy Clause. The district court carried
    the motion with the case, and ultimately submitted all three counts to the jury.
    Several law enforcement witnesses testified, including Halbert and Special
    Agent Phillip Campbell, who explained how the hotel, cell phone,
    Backpage.com ads, and social media records obtained during the investigation
    corroborated the girls’ account of their experience. Both law enforcement
    officers testified that they believed Keys had a reasonable opportunity to
    5
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    observe the girls and that he caused or compelled them to engage in
    commercial sex acts. The defense did not object to the testimony at trial.
    Keys was found guilty of all three sex trafficking counts. The district
    court sentenced Keys according to the applicable guideline range to life in
    prison and imposed a mandatory special assessment of $300.00. Keys did not
    reassert his multiplicity objection at sentencing, though the defense did object
    that Presentence Report applied numerous, overlapping enhancements and
    resulted in Keys being “punished over and over again for the same conduct and
    the same idea.” Keys appeals and presents two issues for review: 1) whether
    the district court erred in denying Keys’s motion to dismiss Count One for
    multiplicity; and 2) whether the district court plainly erred in allowing Halbert
    and Campbell’s testimony at trial. Specifically, Keys contends that Halbert and
    Campbell improperly opined that Keys was guilty of the offenses charged and
    that he was lying during his interview when he denied direct involvement in
    the crime.
    II
    This court reviews issues of multiplicity de novo. United States v. Dupre,
    
    117 F.3d 810
    , 818 (5th Cir. 1997).
    Because Keys did not object to the officers’ testimony at trial, this court
    reviews the district court’s admission of that testimony only for plain error.
    United States v. Garcia-Flores, 
    246 F.3d 451
    , 457 (5th Cir. 2001). Under plain
    error review, the court may remedy the alleged error only if: (1) there is an
    error or defect; (2) the error is clear or obvious; and (3) the error affected the
    appellant’s substantial rights. See Puckett v. United States, 
    556 U.S. 129
    , 135
    (2009). “An error is plain if it is at least clear under current law.” United States
    v. Gonzalez-Rodriguez, 
    621 F.3d 354
    , 363 (5th Cir. 2010) (internal quotations
    omitted). The error must be “so clear or obvious that the trial judge and
    prosecutor were derelict in countenancing it, even absent the defendant’s
    6
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    timely assistance in detecting it.” United States v. Trejo, 
    610 F.3d 308
    , 319 (5th
    Cir. 2010) (internal quotations omitted). For the error to have affected the
    appellant’s substantial rights, “the error must have been prejudicial,” meaning
    that “[i]t must have affected the outcome of the district court proceedings.”
    United States v. Olano, 
    507 U.S. 725
    , 734 (1993). To demonstrate prejudice, “a
    defendant must show a reasonable probability that, but for [the error claimed],
    the result of the proceeding would have been different.” United States v.
    Holmes, 
    406 F.3d 337
    , 365 (5th Cir. 2005) (alteration in original) (internal
    quotations omitted). In regards to potentially improper witness testimony, this
    court has stated: “[E]ven if we were to find the existence of plain error, we could
    find it harmless if there is sufficient evidence, aside from any potentially
    impermissible testimony, from which the jury could find the Defendant[]
    guilty.” United States v. Espino-Rangel, 
    500 F.3d 398
    , 400 (5th Cir. 2007). “[I]f
    the above three prongs are satisfied, the court of appeals has the discretion to
    remedy the error—discretion which ought to be exercised only if the error
    seriously affect[s] the fairness, integrity, or public reputation of judicial
    proceedings.” 
    Puckett, 556 U.S. at 135
    (alteration in original) (internal
    quotations omitted).
    III
    Keys first contends that Count One and Count Three of the indictment
    are multiplicitous because they charge him twice for trafficking the same
    person—Jane Doe 1.
    The relevant criminal statute reads:
    (a) Whoever knowingly–
    (1) in or affecting interstate or foreign commerce, or within
    the special maritime and territorial jurisdiction of the United
    States, recruits, entices, harbors, transports, provides, obtains,
    advertises, maintains, patronizes, or solicits by any means a
    person; or
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    (2) benefits, financially or by receiving anything of value,
    from participation in a venture which has engaged in an act
    described in violation of paragraph (1),
    knowing, or . . . in reckless disregard of the fact, that means of
    force, threats of force, fraud, coercion described in subsection (e)(2), or
    any combination of such means will be used to cause the person to engage
    in a commercial sex act, or that the person has not attained the age of 18
    years and will be caused to engage in a commercial sex act, shall be
    punished as provided in subsection (b).
    18 U.S.C. § 1591(a). Subsection (b) prescribes different mandatory minimum
    sentences for sex trafficking of a child between the ages of fourteen and
    eighteen, sex trafficking of a child under age 14, or sex trafficking by force:
    (b) The punishment for an offense under subsection (a) is–
    (1) if the offense was effected by means of force, threats of
    force, fraud, or coercion described in subsection (e)(2), or by any
    combination of such means, or if the person recruited, enticed,
    harbored, transported, provided, obtained, advertised, patronized,
    or solicited had not attained the age of 14 years at the time of such
    offense, by a fine under this title and imprisonment for any term
    of years not less than 15 or for life; or
    (2) if the offense was not so effected, and the person
    recruited, enticed, harbored, transported, provided, obtained,
    advertised, patronized, or solicited had attained the age of 14 years
    but had not attained the age of 18 years at the time of such offense,
    by a fine under this title and imprisonment for not less than 10
    years or for life.
    18 U.S.C. § 1591(b). Subsection (c) provides that in a prosecution for trafficking
    any individual under eighteen, if “the defendant had a reasonable opportunity
    to observe” the victim, “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.” 18 U.S.C. § 1591(c).
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    The government charged Keys with two separate counts of sex
    trafficking Jane Doe 1 under the statute: Count One) a violation of 18 U.S.C. §
    1591(a)(1) and (b)(2) by causing Jane Doe 1, who was under 18 years of age, to
    engage in commercial sex acts; and Count Three) a violation § 1591(a)(1) and
    (b)(1) for sex trafficking Jane Doe 1 through force, fraud, or coercion. The
    government maintains that Subsections (b)(1) and (b)(2) enumerate two
    separate crimes which contain different elements, proof requirements for
    intent, and penalties. Further, the government argues that, even if (b)(1) and
    (b)(2) are not separate crimes, Keys committed two distinct prohibited acts
    during the relevant time period. Keys contends that Subsection (a)(1)
    enumerates only one crime that can be committed in one of two ways: causing
    an individual to engage in a commercial sex act through force, fraud, or
    coercion or causing an individual under eighteen years of age to engage in a
    commercial sex act. He asserts that because Count One and Count Three are
    predicated on a single, continuous course of criminal conduct involving the
    same victim, the government cannot charge both simultaneously.
    Indictments are multiplicitous if they charge a single offense in two or
    more separate counts. United States v. Ogba, 
    526 F.3d 214
    , 232–33 (5th Cir.
    2008). Such indictments implicate, for obvious reasons, Double Jeopardy
    concerns. United States v. Sanjar, 
    876 F.3d 725
    , 737 (5th Cir. 2017), cert.
    denied sub nom. Main v. United States, No. 17-8107, 
    2018 WL 1317751
    (U.S.
    Apr. 16, 2018). They punish the defendant twice for the same conduct “where
    Congress has not authorized cumulative punishment.” See 
    Ogba, 526 F.3d at 232
    –33. “The chief danger raised by a multiplicitous indictment is the
    possibility that the defendant will receive more than one sentence for a single
    offense.” United States v. Swaim, 
    757 F.2d 1530
    , 1537 (5th Cir. 1985). At
    bottom, the multiplicity inquiry is a question of statutory construction—
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    whether Congress intended to permit cumulative punishment for one instance
    or pattern of conduct. See 
    Ogba, 526 F.3d at 232
    –33.
    This court applies the test laid out in Blockburger v. United States, 
    284 U.S. 299
    (1932) to discern whether Congress has prescribed multiple
    punishments for the same conduct. See 
    Ogba, 526 F.3d at 233
    ; See United
    States v. Davis, 
    656 F.2d 153
    , 156 n.1 (1981) (citing United States v. Goodman,
    
    605 F.2d 870
    (5th Cir. 1979)); Normandale v. United States, 
    201 F.2d 463
    (5th
    Cir.), cert. denied 
    345 U.S. 999
    (1953)). “The applicable rule is that where the
    same act or transaction constitutes a violation of two distinct statutory
    provisions, the test to be applied to determine whether there are two offenses
    or only one is whether each provision requires proof of a fact which the other
    does not.” United States v. Nguyen, 
    28 F.3d 477
    , 485 (5th Cir. 1994) (citing
    Albernaz v. United States, 
    450 U.S. 333
    , 336–38 (1981); see also 
    Blockburger, 284 U.S. at 304
    ; 
    Davis, 656 F.2d at 156
    n.1 (noting that Blockburger “applie[s]
    to several offenses enumerated in one statutory section as well as to offenses
    named in separate sections”). As long as each statutory provision requires
    proof of a fact the other does not, “the Blockburger test is satisfied,
    notwithstanding a substantial overlap in the proof offered to establish the
    crimes.” 
    Nguyen, 28 F.3d at 485
    (quoting Brown v. Ohio, 
    432 U.S. 161
    , 166
    (1977)).
    Keys’s indictment passes muster under Blockburger. Count One and
    Count Three charge Keys under two separate subsections of 18 U.S.C. § 1591—
    subsections (b)(1) and (b)(2). Each subsection requires proof of a fact that the
    other subsection does not. Subsection (b)(1) requires the government to prove
    that the defendant knew or recklessly disregarded the fact that the offense
    would be effected by means of force, fraud, or coercion. See 18 U.S.C. 1591(b)(1).
    Trafficking by force can be charged irrespective of the victim’s age. Subsection
    (b)(2) requires that the government prove that the defendant knew or
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    recklessly disregarded the fact that the victim was under 18 years old. 18
    U.S.C. § 1591(b)(2). Moreover, under subsection (b)(2), the government can
    satisfy the intent requirement by demonstrating that the defendant had a
    reasonable opportunity to observe the victim—it need not demonstrate that
    the defendant actually knew or recklessly disregarded her age. See 18 U.S.C.
    § 1591(c). In other words, subsection (c) imposes strict liability on defendants
    regarding a victim’s age. United States v. Copeland, 
    820 F.3d 809
    , 813 (5th Cir.
    2016). Subsection (c) does not so alter the intent requirement for force under
    subsection (b)(1). See 18 U.S.C. § 1591(c). 3 In sum, the subsections require the
    government to prove different elements, each of which requires different
    evidence. Despite the fact that Keys engaged in a single, continuous course of
    unbroken criminal conduct, he can properly be charged separately with
    violating both statutory subsections.
    When assessing two subsections within a single statutory scheme,
    however, courts are generally more reluctant to rely on Blockburger alone to
    allow punishment under both provisions. See United States v. McLaughlin, 
    164 F.3d 1
    , 15 (D.C. Cir. 1998); cf. United States v. Munoz-Romo, 
    989 F.2d 757
    , 759
    (5th Cir. 1993). Accordingly, it is often helpful to examine other indicia of
    congressional intent. For example, the fact that Congress has prescribed
    different penalties for violations of subsections (b)(1) and (b)(2)—a minimum
    of 10 years’ imprisonment for a violation of subsection (b)(2) and a minimum
    of 15 years for a violation of subsection (b)(1)—is a strong indication that it
    intended to allow for multiple punishments. See, e.g., United States v.
    Winchester, 
    916 F.2d 601
    , 605–08 (11th Cir. 1990) (holding multiple
    convictions under § 922(g) multiplicitous because, among other things, the
    3Subsection (c) would apply to a charge under subsection (b)(1) for trafficking a victim
    under the age of 14. See 18 U.S.C. § 1591(c); 
    Copeland, 820 F.3d at 813
    .
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    statute “did not list separate penalties for the separate subdivisions of
    subsection (g)”).
    Moreover, the legislative history indicates that Congress sought to
    punish trafficking aggressively. It has amended Section 1591 several times to
    allow more extensive prosecution of exploitative crimes. See Pub. L. No. 110-
    457, 122 Stat. 5044 (2008); Pub. L. No. 114-22, 129 Stat. 247 (2015). The
    legislative record accompanying the Trafficking Victims Protection Act of 2000,
    which encompasses Section 1591, states that human trafficking is a “degrading
    institution of slavery” and “an evil requiring concerted and vigorous action.”
    Pub. L. No. 106-386, 114 Stat. 1464, Sec. 102(b)(1), 21 (2000). In short, the
    history of the statute supports construing subsections (b)(1) and (b)(2) as
    distinct crimes that can be charged separately.
    Counts One and Three of Keys’s indictment are not multiplicitous.
    Accordingly, we AFFIRM Keys’s convictions on all three Counts. 4
    IV
    We now turn to Keys’s challenge to the admissibility of law enforcement
    testimony. Keys alleges two overarching problems with Halbert and
    Campbell’s testimony. First, Keys contends that both officers improperly
    opined that Keys was guilty of the offenses charged. Second, Keys claims that
    Halbert was erroneously allowed to offer his opinion that Keys was not telling
    the truth during his police interview.
    Both Halbert and Campbell testified as lay witnesses—neither was
    qualified as an expert. Accordingly, Federal Rules of Evidence 701 and 704(a)
    4 We note that each individual violation of Section 1591 charged in the indictment
    allows for a life sentence. See 18 U.S.C.§ 1591(b)(1), (2). At sentencing, the district court
    stated: “I’m going to sentence at the Guideline range and sentence the Defendant to life in
    prison. That sentence is on each of Counts 1, 2, and 3 to run concurrently.” This language
    indicates that the district court would have sentenced Keys to life in prison on any one of the
    charges. All of the conduct would still be relevant to the Guidelines computation in the PSR.
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    govern the propriety of their opinion testimony. FED R. EVID. 701, 704(a). Rule
    701 provides that non-expert opinion testimony must be: “(a) rationally based
    on the witness’s perception; (b) helpful to clearly understanding the witness’s
    testimony or to determining a fact in issue; and (c) not based on scientific,
    technical, or other specialized knowledge within the scope of Rule 702.” FED R.
    EVID. 701. Rule 704 clarifies that “[a]n opinion is not objectionable just because
    it embraces an ultimate issue.” FED R. EVID. 704(a); see also 
    Espino-Rangel, 500 F.3d at 400
    (stating that while lay witnesses may not offer legal
    conclusions, “testimony in the form of an opinion or inference otherwise
    admissible is not objectionable simply because it embraces an ultimate fact
    issue to be determined by the factfinder”). 5 Rule 704 was, however, intended
    to preserve the effect of other evidentiary provisions meant to “assur[e] against
    the admission of opinions which would merely tell the jury what result to
    reach.” FED R. EVID. 704 advisory committee’s note to 1972 proposed rules.
    Thus, under Rule 704(a), testimony that amounts to a legal conclusion is
    improper. See United States v. Williams, 
    343 F.3d 423
    , 435 (5th Cir. 2003); see
    also United States v. McGee, 
    821 F.3d 644
    , 648–49 (5th Cir.), cert denied, 
    137 S. Ct. 251
    (2016). 6 In evaluating challenged testimony, the court must
    5  Keys cites Rule 704(b) for the proposition that “an expert witness must not state an
    opinion about whether the defendant did or did not have a mental state or condition that
    constitutes an element of the crime charged or of a defense. Those matters are for the trier of
    fact alone.” “[B]ut neither [Halbert] nor [Campbell] was called as an expert witness, so FRE
    704(b) has no application in the instant case.” 
    Espino-Rangel, 500 F.3d at 400
    . Moreover,
    “[l]ay witnesses [] may give opinion testimony about a defendant’s mental state.” United
    States v. Diaz, 
    637 F.3d 592
    , 599 (5th Cir. 2011); see also United States v. Heard, 
    709 F.3d 413
    , 422 (5th Cir. 2013).
    6 Rule 704(a) is the source of the general limitation on opinion testimony on ultimate
    legal issues. See, e.g., 
    McGee, 821 F.3d at 649
    ; United States v. Izydore, 
    167 F.3d 213
    , 218
    (5th Cir. 1999); Owen v. Kerr-McGee Corp., 
    698 F.2d 236
    , 240 (5th Cir. 1983). This limitation
    applies equally to both lay witness and expert witness testimony. Compare 
    Izydore, 167 F.3d at 218
    and 
    Williams, 343 F.3d at 435
    (discussing the limitation when evaluating lay witness
    testimony) with United States v. Buchanan, 
    70 F.3d 818
    , 833 n.20 (5th Cir. 1995) and United
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    distinguish “between an impermissible opinion on an ultimate legal issue and
    ‘a mere explanation of the [witness’s] analysis of facts which would tend to
    support a jury finding on the ultimate issue.’” United States v. Buchanan, 
    70 F.3d 818
    , 833 n.20 (5th Cir. 1995) (quoting United States v. Speer, 
    30 F.3d 605
    ,
    610 (5th Cir. 1994)).
    Again, the defense did not object to the admission of the testimony at
    trial and therefore we review only for plain error. 
    Garcia-Flores, 246 F.3d at 457
    .
    1. Opinion testimony relevant to Keys’s ultimate guilt
    As this court has explained, “determinations of guilt or innocence are
    solely within the province of the trier of fact.” United States v. Izydore, 
    167 F.3d 213
    , 218 (5th Cir. 1999); see also United States v. Buchanan, 
    70 F.3d 818
    , 833
    n.20 (5th Cir. 1995). Accordingly, a lay witness’s opinion that a defendant is
    guilty of the crime charged would be improper trial testimony. See id.; see also
    United States v. Thomas, 
    847 F.3d 193
    , 206 (5th Cir. 2017).
    Relatedly, “questions which would merely allow the witness to tell the
    jury what result to reach are not permitted.” Owen v. Kerr-McGee Corp., 
    698 F.2d 236
    , 240 (5th Cir. 1983). Of course, “separating impermissible questions
    which call for overbroad or legal responses from permissible questions is not a
    facile [task].” 
    Id. The Advisory
    Committee Notes to the Federal Rules of
    Evidence offer the following example: While the question (1) “Did T have
    capacity to make a will?” would be improper, the question (2) “Did T have
    sufficient mental capacity to know the nature and extent of his property and
    the natural objects of his bounty and to formulate a rational scheme of
    States v. Speer, 
    30 F.3d 605
    , 610 (5th Cir. 1994) (discussing the limitation when evaluating
    expert witness testimony).
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    distribution?” would be allowed. FED R. EVID. 704 advisory committee’s note to
    1972 proposed rules.
    Attempting to shed light on why the first formulation is problematic, this
    court explained that it “is phrased in such broad terms that it could as readily
    elicit a legal as well as a fact based response. A direct response, whether it be
    negative or affirmative, would supply the jury with no information other than
    the [witness’s] view of how its verdict should read.” 
    Owen, 698 F.2d at 240
    . The
    second formulation is permissible because it is not explicitly framed as a
    request for an opinion “phrased in terms of inadequately explored legal
    criteria.” FED R. EVID. 704 advisory committee’s note to 1972 proposed rules.
    Rather, it breaks down the question of testamentary capacity—a question that
    has a specific legal meaning—into its discrete elements. See 1 McCormic On
    Evid. §12 (7th ed.). Stated differently, questions (1) and (2) capture the
    distinction “between an impermissible opinion on an ultimate legal issue and
    ‘a mere explanation of the [witness’s] analysis of facts which would tend to
    support a jury finding on the ultimate issue.’” 
    Buchanan, 70 F.3d at 833
    n.20
    (quoting 
    Speer, 30 F.3d at 610
    ).
    Halbert engaged in the following exchanges with the prosecutor at trial:
    1) when asked, “[b]ased on all the information that you learned during your
    investigation, the entirety of it, did you believe that Jane Doe 1 had been
    compelled to engage in commercial sex acts through force, fraud, or coercion?”
    he responded, “[a]bsolutely”; 2) when asked “did you believe that the
    defendant, based on your investigation, had an opportunity to observe these
    girls?” he responded, “[a]bsolutely”; 3) when asked “did you believe, based on
    your investigation, that Jane Doe 2, being 14 at the time, was compelled to
    engage in commercial sex acts?” he responded, “[s]he was”; and 4) when asked
    “who do you believe compelled them to engage in those commercial sex acts?”
    he responded “[t]he defendant, Mr. Keys.”
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    Similarly, Campbell had the following exchange with the prosecutor: 1)
    when asked, “[b]ased on your investigation in this case, do you believe that the
    defendant . . . caused Jane Doe 1 and Jane Doe 2 to engage in commercial sex
    acts in the Northern District of Texas?” he responded “I do”; 2) when asked “do
    you believe that the defendant either knew or had a reasonable opportunity to
    observe Jane Doe 1 and Jane Doe 2 during that time period?” he responded “I
    believe he did”; and 3) when asked “[d]o you believe that the defendant caused
    Jane Doe 1 to engage in commercial sex acts by force, fraud, or coercion?” he
    responded “[a]bsolutely.”
    The district court did not plainly err in admitting the above testimony.
    The formulations of the questions closely track the language of individual
    elements of the charged sex trafficking counts. See 18 U.S.C. § 1591(a), (c). For
    example, Counts One and Two required the government to prove that Keys: 1)
    knowingly recruited, enticed, harbored, transported, provided, obtained, or
    maintained by any means Jane Doe 1 and Jane Doe 2; 2) in or affecting state
    commerce; 3) that he did so knowing or in reckless disregard of the fact that
    Jane Doe 1 and 2 had not attained the age of 18 years or that he had a
    reasonable opportunity to observe them; and 4) that he did so knowing or in
    reckless disregard of the fact that they would be caused to engage in a
    commercial sex act. See 18 U.S.C. § 1591(a), (c). In isolating discrete elements
    of the crime of sex trafficking of a child, the questions conform to the
    formulation approved by the Advisory Committee Notes. See FED R. EVID. 704
    advisory committee’s note to 1972 proposed rules. The government did not ask
    Halbert or Campbell “do you believe that the defendant committed the offense
    of sex trafficking of a child?” Such a question is “phrased in terms of
    inadequately explored legal criteria.” FED R. EVID. 704 advisory committee’s
    note to 1972 proposed rules. Rather, the government asked Halbert and
    Campbell for their opinion regarding specific factual building blocks of the
    16
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    ultimate crime. In that sense, the questions are eliciting “a mere explanation
    of the [witness’s] analysis of facts which would tend to support a jury finding
    on the ultimate issue.” 
    Speer, 30 F.3d at 610
    . 7
    To the extent the district court erred in admitting the above testimony,
    such an error was not “so clear or obvious that the trial judge and prosecutor
    were derelict in countenancing it, even absent the defendant’s timely
    assistance in detecting it.” 
    Trejo, 610 F.3d at 319
    (internal quotations omitted).
    While it is well-settled law in this circuit that lay witness opinions amounting
    to legal conclusions are inadmissible, the line between an impermissible legal
    conclusion and “explanation of a [witness’s] analysis of facts” is somewhat
    blurry. The example provided by the Advisory Committee Notes to Rule 704 is
    helpful but not always conclusive. Moreover, the distinction is rarely dealt with
    in depth in the case law, as these types of challenges are often reviewed
    following a jury trial for plain error and can be disposed of on the third or fourth
    prong. See, e.g., 
    McGee, 821 F.3d at 649
    ; 
    Izydore, 167 F.3d at 218
    .
    Furthermore, Keys has not shown a “reasonable probability that, but for
    [the error claimed], the result of the proceeding would have been different.”
    
    Holmes, 406 F.3d at 365
    (alteration in original) (internal quotations omitted).
    The volume and quality of the evidence against Keys is staggering. See Espino-
    
    Rangel, 500 F.3d at 400
    (explaining that even if the admission of the testimony
    was plainly erroneous, the error is harmless if the remaining evidence at trial
    was sufficient to support the jury’s verdict). Both victims testified at length
    about their experiences at trial, and the record indicates that their live
    testimony was consistent with their previous accounts. Their accounts were
    7 The testimony was also “(a) rationally based on the witness’s perception; (b) helpful
    to clearly understanding the witness’s testimony or to determining a fact in issue; and (c) not
    based on scientific, technical, or other specialized knowledge within the scope of Rule 702.”
    FED R. EVID. 701. The defendant does not challenge the admissibility of the testimony under
    Rule 701.
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    corroborated by hotel, phone, and internet records. Keys admitted to a
    substantial amount of the conduct in his police interview. Given the evidence
    presented at trial, it is difficult to imagine Keys would have obtained a more
    favorable outcome absent the challenged testimony.
    The district court did not err in admitting Halbert and Campbell’s
    testimony. Even if the testimony was admitted in error, Keys has not met his
    burden to demonstrate that the error was obvious or that, absent the error,
    there is a reasonable probability the result of his trial would have been
    different.
    2. Opinion testimony pertaining to Keys’s truthfulness
    Halbert’s testimony regarding the veracity of Keys’s statement to police
    is not an impermissible legal conclusion—it is an opinion of fact. It therefore
    does not run afoul of Rule 704(a)’s proscription of opinion testimony on an
    ultimate legal issue. 8 Accordingly, the source of the alleged problem with this
    subset of Halbert’s testimony must be Rule 701. See, e.g., United States v.
    Churchwell, 
    807 F.3d 107
    , 118–19 (5th Cir. 2015) (assessing non-expert
    testimony regarding the defendant’s veracity under Rule 701). Keys incorrectly
    objects to the admission of Halbert’s testimony on the basis of Rule 704(b).
    Accordingly, Keys has likely waived any Rule 701-specific challenges to the
    testimony for failure to adequately brief the issues. See Williams v. Parker, 
    843 F.3d 617
    , 622 n.14 (5th Cir. 2016). Regardless, Halbert’s testimony meets the
    requirements of Rule 701, and it was therefore properly admitted.
    Keys objects to Halberts’ testimony that: 1) Keys minimized his role in
    facilitating the girls’ prostitution; 2) Keys was not completely honest during
    8 To the extent Keys objects on the basis that Halbert’s opining Keys lied during his
    interview is an indirect way of testifying to Keys’s guilt or innocence, he identifies no
    authority that indicates this type of “veracity” testimony is improper because of some
    hypothetical, twice-removed, downstream effect on that ultimate legal conclusion.
    18
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    his interview; 3) he believed Keys was lying when he said that he got rid of the
    girls after learning that they were underage; and 4) he believed Keys was lying
    when he stated that he made contact with Jane Doe 1 after she left him to tell
    her to stop engaging in the lifestyle and to warn the apartment’s residents that
    she was underage. For these opinions to be admissible, they must be rationally
    related to Halbert’s perception, helpful to understanding his testimony or to
    determining a fact in issue, and not based on scientific, technical, or other
    specialized knowledge. See FED R. EVID. 701. Again, an opinion is not
    objectionable merely because it encompasses an ultimate issue of fact for the
    jury’s determination such as the veracity of a defendant’s prior statements. See
    FED R. EVID. 704(a); 
    Churchwell, 807 F.3d at 118
    . 9
    It was not error to admit Halbert’s testimony. First, the testimony was
    certainly based on his personal perceptions. Halbert was one of the three
    agents present when law enforcement interviewed Keys. He participated
    actively in the questioning and he was able to observe, over some time, Keys’s
    demeanor and the inconsistencies in his story. Moreover, Halbert’s testimony
    was helpful. His opinion based on his observations gave context to Keys’s
    statements and assisted the jury in understanding Halbert’s interview
    tactics—which the defense sought to use against him on cross-examination.
    The defense also attempted to highlight the fact that Halbert had admitted
    Keys had told the truth about some things during his interview. To the extent
    that the defense wanted to capitalize on Halbert’s admissions that Keys had
    been partially honest, Halbert’s testimony that he did not think Keys was
    being truthful about a number of critical facts was undoubtedly beneficial to
    9  In the only case cited by Keys that speaks directly to testimony regarding the
    truthfulness of a defendant’s statements, the First Circuit held that the district court abused
    its discretion in admitting the testimony because, in that particular circumstance, it was not
    helpful—not simply because it touched on an ultimate issue in the case. See United States v.
    Sanabria, 
    645 F.3d 505
    , 516 (1st Cir. 2011).
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    the jury. See 
    Churchwell, 807 F.3d at 119
    (stating that the challenged
    testimony was “appropriate, especially after the defense elicited testimony
    from [the witness] that [the defendant] was truthful at some point”). Lastly, it
    is clear that Halbert’s opinion was not based on scientific, technical, or other
    specialized knowledge. Accordingly, the district court did not err in admitting
    Halbert and Campbell’s testimony at trial. 10
    V
    For the foregoing reasons, we AFFIRM.
    10 Even if admitting the testimony was error, and even if that error was clear or
    obvious, Keys has failed to meet his burden to demonstrate that, absent the alleged error,
    the result of his trial would have been different for the same reasons as outlined in Section
    
    IV(1), supra
    .
    20