United States v. Timothy Bowen ( 2016 )


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  •      Case: 14-40654   Document: 00513442554      Page: 1   Date Filed: 03/29/2016
    IN THE UNITED STATES COURT OF APPEALS
    FOR THE FIFTH CIRCUIT
    United States Court of Appeals
    Fifth Circuit
    No. 14-40654                            FILED
    March 29, 2016
    Lyle W. Cayce
    UNITED STATES OF AMERICA,                                                Clerk
    Plaintiff–Appellee,
    v.
    TIMOTHY LEDON BOWEN; JUAN CARLOS VEGA; RENE CORTEZ
    SALAZAR,
    Defendants–Appellants.
    Appeals from the United States District Court
    for the Eastern District of Texas
    Before HIGGINBOTHAM, OWEN, and ELROD, Circuit Judges.
    PER CURIAM:
    Appellants Timothy Bowen, Juan Vega, and Rene Salazar were
    convicted of conspiring to possess with intent to distribute methamphetamine
    in violation of 21 U.S.C. § 846. Appellants challenge various aspects of their
    convictions, and Bowen also challenges his sentence. Because we find no
    reversible error in Appellants’ convictions or Bowen’s sentence, we AFFIRM.
    I.
    Appellants Bowen, Vega, and Salazar, along with thirty-one other co-
    defendants, were indicted by a federal grand jury for conspiracy to possess with
    intent to distribute 50 grams or more of methamphetamine or 500 grams or
    more of a mixture or substance containing methamphetamine in violation of
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    No. 14-40654
    21 U.S.C. § 846. See 21 U.S.C. § 841(a), (b)(1)(A)(viii). The relevant evidence
    at trial was as follows. 1
    In 2011, local police in the Denison/Sherman area of Texas requested
    assistance from the DEA in investigating suspected methamphetamine
    distribution activity between Dallas and the Denison/Sherman area. DEA
    agent Henry Mata was assigned to the investigation.                       The investigation
    initially focused on the Camacho siblings (Manuel, Paul, and Priscilla) in
    Dallas who sold methamphetamine to distributors in the Denison/Sherman
    area. Paul Camacho led investigators to Andy Nguyen, who was the source of
    the Camachos’ supply. Nguyen testified that he worked for a supplier in
    Mexico named “Primo” and sold methamphetamine to the Camachos.
    Primo used a carrier named Ramiro Cazares to deliver drugs and drug
    proceeds from Mexico to Nguyen’s workers in Dallas. One of Nguyen’s workers,
    Manuel Urbina, gave Cazares a black Honda Accord with a hidden
    compartment for Cazares to use to store drugs and proceeds. Cazares knew
    Appellant Vega from home construction jobs and asked Vega to help him
    deliver Primo’s drugs and drug proceeds. Vega agreed and began transporting
    the methamphetamine and proceeds, sometimes with Cazares and sometimes
    on his own. After Cazares was arrested, Cazares agreed to make a recorded
    telephone call to Vega during which Vega recognized “Primo,” mentioned
    “cooking” the methamphetamine, and offered to help Cazares move multiple
    kilograms of methamphetamine that were hidden in Cazares’s ex-wife’s house.
    When Vega was arrested, Vega admitted to Agent Mata that he was a runner
    for Cazares and knew there were multiple kilograms of methamphetamine in
    1 We view the evidence in the light most favorable to the jury verdict as it relates to
    the sufficiency-of-the-evidence challenges. See United States v. Moreland, 
    665 F.3d 137
    , 148
    (5th Cir. 2011) (“[J]udges must be highly deferential to the jury’s verdict of conviction: courts
    view the evidence in the light most favorable to the prosecution.” (internal quotation marks
    and alterations omitted)).
    2
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    Cazares’s ex-wife’s house. Investigators found the black Honda Accord with
    the hidden compartment at Vega’s apartment. A key to the Honda was hidden
    inside one of Vega’s home speakers.
    During the time of the alleged conspiracy, Manuel Camacho sold
    methamphetamine        to   Appellant   Salazar       who    distributed   it   in   the
    Denison/Sherman area.         The Camachos also sold methamphetamine to
    Kenneth House, who at first competed with Salazar in the Denison/Sherman
    area, but later became Salazar’s partner in distributing methamphetamine
    there.     From about 2010 to 2011, House and Salazar also purchased
    methamphetamine from another source in Dallas named Fernando Perales.
    House’s wife, Christina, would go with House to pick up drugs from Perales.
    Perales knew House was distributing the methamphetamine with Salazar in
    the Sherman/Denison area.
    An individual named Trey Tibbs purchased methamphetamine from
    House and Salazar in 2010 and 2011. Tibbs also worked for House and Salazar
    by picking up drug proceeds and delivering methamphetamine for them. When
    House went to jail, Tibbs purchased methamphetamine from Salazar. After
    Salazar also went to jail, an individual named Charles Quirolo continued the
    Salazar/House methamphetamine distribution operation until customers
    complained about Quirolo, after which Salazar’s girlfriend, Andrea Reeves,
    took over the operation.
    House testified that Salazar sold methamphetamine to both Appellant
    Bowen      and   his   brother,   Melvin,       and   that   Salazar   would    “front”
    methamphetamine to them when they did not have enough money to pay
    Salazar. After Melvin went to jail and still owed Salazar money, Melvin’s wife,
    Kisha, started working for Salazar to pay off her husband’s debt. After the
    debt was paid, Kisha continued distributing methamphetamine for Salazar.
    3
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    While House and Melvin were in jail, their wives (Christina House and Kisha
    Bowen 2) met and became friends. Christina introduced Kisha to Perales, who
    had supplied methamphetamine to House and Salazar.
    After House went to jail, Christina House bought methamphetamine
    from Perales.      Christina and Kisha pooled their money together to buy
    methamphetamine at a better price from Perales. One of Kisha’s customers
    was Bowen, who gave her money to purchase methamphetamine for him from
    Perales.    Eventually, Kisha and Christina introduced Bowen to Perales
    because Bowen had “a lot” of customers and was having trouble getting his
    supply from Salazar’s agents.
    Perales testified that he sold two to four ounces of methamphetamine to
    Kisha and Bowen per week.            Perales testified that after Kisha stopped
    participating, Bowen continued to buy methamphetamine from Perales, and
    eventually brought Tibbs with him. Bowen and Tibbs pooled their money to
    buy methamphetamine from Perales. According to Perales, Tibbs and Bowen
    eventually purchased around ten ounces per week from him. Perales testified
    that he knew Tibbs and Bowen were distributing methamphetamine in
    Sherman.
    Marie Davila testified that she purchased methamphetamine from
    Bowen and that beginning in summer 2011, she was paid by Bowen to drive
    him to pick up drugs from Perales. She testified that Bowen paid her $100
    cash and a gram of methamphetamine for each trip. Carlos Cabrales, who
    lived with Davila, testified that he was paid to supply Davila with a car to drive
    Bowen and also to rent cars for them so that Bowen could pick up drugs in a
    variety of cars.
    2 Kisha Bowen is Appellant Bowen’s sister-in-law. All references to “Bowen” in this
    opinion are to Appellant Timothy Bowen.
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    Davila testified that Bowen purchased “two sandwich bags” half-full of
    methamphetamine about every two days from Perales until about mid-October
    2011. Davila testified that in the approximately three-month period during
    which Davila drove Bowen, they made eighteen to twenty trips to buy drugs
    from Perales.   Davila testified that she also helped Bowen package the
    methamphetamine for redistribution to Bowen’s customers and would rent
    hotel rooms, which Bowen paid for, where she and Bowen would package the
    drugs.
    In sum, the evidence at trial demonstrated that Primo sent
    methamphetamine from Mexico via Cazares and Vega, who delivered the
    drugs to Nguyen in Dallas.      Nguyen sold the methamphetamine to the
    Camacho siblings in Dallas. The Camacho siblings sold methamphetamine to
    Salazar and his partner House.          Salazar and House also bought their
    methamphetamine from Perales in Dallas, and once Salazar and House went
    to jail, some of their customers also bought methamphetamine from Perales.
    Salazar,   House,    and   some    of       their   customers     distributed    the
    methamphetamine in the Sherman/Denison area.                    Bowen purchased
    methamphetamine from Salazar and, once Salazar went to jail, from Perales
    (first through Kisha Bowen and Christian House, then directly from Perales,
    sometimes pooling his money with Tibbs to get a better deal from Perales), and
    sold that methamphetamine to customers in the Sherman area.
    When the government rested after the presentation of the evidence,
    Appellants moved for acquittal. After hearing argument from each Appellant’s
    counsel, the district court denied the three motions for acquittal. Appellants
    then waived their right to testify, and defense counsel rested. Appellants
    requested a multiple conspiracies instruction, which the district court denied.
    The jury found all three Appellants guilty of the charged crime. Vega and
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    Bowen were sentenced to 324 months of imprisonment, and Salazar was
    sentenced to life imprisonment.
    All three Appellants appeal their convictions, and Bowen appeals his
    sentence as well. Regarding the challenges to the convictions, Bowen and Vega
    argue that the evidence was insufficient to support their convictions; Salazar
    and Bowen argue that the district court abused its discretion by refusing to
    give the jury a multiple-conspiracies instruction; and Salazar argues that a
    statement made by the prosecutor in closing argument was reversible error.
    Regarding Bowen’s challenge to his sentence, Bowen argues that the district
    court impermissibly granted a three-level enhancement for Bowen’s role as a
    manager/supervisor in the conspiracy and that the district court impermissibly
    calculated his base offense level using the conspiracy-wide drug quantity,
    rather than a drug amount for which Bowen was individually responsible.
    II.
    A.
    Vega and Bowen argue that the government’s evidence was insufficient
    to support their convictions. Because Vega and Bowen made timely motions
    for acquittal at trial, we review de novo their challenge to the sufficiency of the
    evidence supporting their convictions. United States v. Beacham, 
    774 F.3d 267
    ,
    272 (5th Cir. 2014).    The review, though de novo, is nevertheless “highly
    deferential to the verdict.” 
    Id. “The jury’s
    verdict will be affirmed unless no
    rational jury, viewing the evidence in the light most favorable to the
    prosecution, could have found the essential elements of the offense to be
    satisfied beyond a reasonable doubt.” United States v. Roetcisoender, 
    792 F.3d 547
    , 550 (5th Cir. 2015). While we consider evidence that countervails the
    jury’s verdict, all reasonable inferences are made in favor of the jury’s verdict.
    
    Id. 6 Case:
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    To prove a drug conspiracy, the government must prove that “(1) two or
    more persons, directly or indirectly, reached an agreement to possess with the
    intent to distribute a controlled substance; (2) [the defendant] knew of the
    agreement; (3) [the defendant] voluntarily participated in the agreement; and
    (4) the overall scope of the conspiracy involved [the drug amount in the charged
    crime].” United States v. Castillo-Chavez, 555 F. App’x 389, 398–99 (5th Cir.
    2014) (citing United States v. Jimenez, 
    509 F.3d 682
    , 689 (5th Cir. 2007)); 21
    U.S.C. §§ 841(a)(1), (b)(1)(A), and 846), cert. denied, 
    135 S. Ct. 161
    (2015). “A
    reasonable jury may ‘infer the existence of a conspiracy from the presence,
    association, and concerted action of the defendant with others.’” 
    Id. (quoting United
    States v. Curtis, 
    635 F.3d 704
    , 719 (5th Cir. 2011)).
    Vega argues that the evidence against him was “solely based on the co-
    defendant testimony of one witness, Mr. Ramiro Cazares.” Vega acknowledges
    that a co-conspirator’s uncorroborated testimony can support a guilty verdict—
    even if the co-conspirator has accepted a plea bargain—unless the testimony
    is “incredible.” See United States v. Villegas-Rodriguez, 
    171 F.3d 224
    , 228 (5th
    Cir. 1999). Vega argues that Cazares’s testimony is incredible because Cazares
    admitted to being a deceptive person and had a motive to testify against Vega
    for the possibility of a reduced sentence.
    “Testimony is incredible as a matter of law only if it relates to facts that
    the witnesses could not possibly have observed or to events which could not
    have occurred under the laws of nature.” United States v. Valdez, 
    453 F.3d 252
    , 257 (5th 2006). Neither Cazares’s admission to having deceived someone
    in the past nor his possible motive to testify against Vega render Cazares’s
    testimony “incredible.” See 
    id. The jurors
    were adequately informed about
    these matters, and we do not review the weight or credibility of the evidence,
    including witness testimony. United States v. Hayes, 
    342 F.3d 385
    , 389 (5th
    7
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    Cir. 2003). Instead, we view the evidence “in the light most favorable to the
    verdict, accepting all credibility choices and reasonable inferences made by the
    trier of fact which tend to support the verdict.” United States v. Moreno-
    Gonzalez, 
    662 F.3d 369
    , 372 (5th Cir. 2011).
    Moreover, the premise of Vega’s argument is simply incorrect.               The
    evidence against Vega was not “solely based” on Cazares’s testimony—Agent
    Mata also testified against Vega.             Agent Mata corroborated Cazares’s
    testimony by testifying about physical evidence, including evidence that linked
    Vega to the crime, and about Vega’s incriminating statements made to Agent
    Mata after Vega’s arrest.      For example, Agent Mata testified that during
    surveillance of Vega’s apartment in Dallas, they observed Vega driving the
    black Honda Accord with the hidden compartments that, according to trial
    testimony, one of Nguyen’s agents gave to Cazares for drug runs. 3 Agent Mata
    also testified that after arresting Vega, Vega told him that Cazares’s source
    was “Primo”; admitted to being a “runner” for Cazares; stated that there were
    multiple kilograms of methamphetamine in a basket upstairs in Cazares’s ex-
    wife’s house in Grand Prairie—precisely where agents had just previously
    recovered multiple kilograms of methamphetamine; stated that he knew the
    Black Honda had a hidden compartment and that Cazares had loaned the car
    to him; and, after denying that he had the keys to the Honda, eventually
    admitted that the keys were hidden inside a speaker box in his apartment,
    which was were agents found the keys. Vega also told Agent Mata that he had
    had a cell phone, but he had thrown it on the side of the road after hearing that
    Cazares had been arrested.
    3 Specifically, Manuel Urbina testified that he worked for Nguyen in the
    methamphetamine distribution scheme and had worked with Cazares to transport drugs and
    drug proceeds. Urbina testified that he delivered the Honda Accord with the hidden
    compartments to Cazares at the direction of Nguyen. Nguyen testified that he bought the
    Honda Accord and put a drug stash box in it that was accessed via a trapdoor.
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    The jury also heard a recorded phone call between Vega and Cazares
    that corroborated Cazares’s testimony. According to Cazares, he and Vega had
    transported six kilograms of methamphetamine to Cazares’s house and had set
    up a lab to make “ice” by “cooking” the methamphetamine. 4 During the phone
    call, Vega referred to the “cooking” and offered to “do the cooking” that day.
    Cazares told Vega that he was still waiting to hear from Primo, and Vega
    indicated that he knew about Primo and knew Primo was in charge. Cazares
    also told Vega that he wanted to get the “balls” out of the house, and Vega
    responded by offering to help Cazares find a place to “store it for good.”
    This evidence was sufficient to show that Vega knew about the
    methamphetamine distribution scheme and voluntarily agreed to act in
    furtherance of that scheme. See 
    Jimenez, 509 F.3d at 689
    . As far as Vega’s
    connection to the conspiracy as a whole, various witnesses testified to
    Cazares’s connections to Primo and Nguyen, and to Primo and Nguyen’s
    connections to the Camacho siblings, who supplied methamphetamine to
    Salazar, who sold methamphetamine in the Sherman/Denison area, including
    to Bowen who distributed methamphetamine to his own customers in the
    Sherman/Denison area.           Finally, the testimony of multiple witnesses
    established that the conspiracy easily involved the charged quantity of
    methamphetamine. 5       The evidence was easily sufficient to support Vega’s
    conviction.
    4    Agent Mata testified that “cooking” is the term for converting powder
    methamphetamine to crystal methamphetamine.
    5 Andy Nguyen testified that he sold the Camacho siblings around twenty to thirty
    kilograms of methamphetamine. Manuel Camacho testified that he delivered to House on a
    single occasion two pounds of methamphetamine, which equates to over 900 grams. Manuel
    Camacho estimated that, in all, from mid-2010 to when he was arrested in 2012, he sold
    roughly 43.5 pounds (19,731.27 grams) to Salazar and House. Manuel Camacho testified
    that all of that methamphetamine was distributed in the Sherman/Denison area.
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    Turning to Bowen’s sufficiency argument, Bowen argues that the
    evidence against him did not show he was a member of the methamphetamine
    distribution conspiracy because there was no evidence that Bowen “entered
    into an agreement with anyone to distribute methamphetamine.”              Bowen
    argues that he acted “independently” of the other co-conspirators because he
    “did not depend on anyone other than himself.” Bowen also argues that the
    evidence against him was based solely on the testimony of cooperating
    witnesses and their testimony was “wholly unbelievable or [un]reliable” or
    “incredible as a matter of law” because the witnesses’ testimony was
    inconsistent as to the dates when Bowen allegedly met Perales and Salazar to
    purchase methamphetamine, as some witnesses said June 2011, while others
    said September 2011.
    An express agreement is not required to prove a conspiracy: “It is well-
    settled that circumstantial evidence may establish the existence of a
    conspiracy, as well as an individual’s voluntary participation in it,” and a “jury
    is free to infer the existence of a conspiracy from the presence, association, and
    concerted action of the defendant with others.”        
    Curtis, 635 F.3d at 719
    (internal quotation marks and alterations omitted). The evidence showed
    many instances in which Bowen depended on other co-conspirators, such as his
    buying methamphetamine from Salazar and Perales, giving Kisha Bowen and
    Christina House money to buy methamphetamine for him from Perales, and
    pooling his money with Tibbs to get a better deal on methamphetamine from
    Perales. Finally, discrepancies in witness testimony go to the weight and
    credibility of the evidence, which we do not review. 
    Moreno-Gonzalez, 662 F.3d at 372
    (“[A]ny conflict in the evidence must be resolved in favor of the jury's
    verdict.”).
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    The evidence was more than sufficient to show that Bowen knew about
    the methamphetamine distribution scheme and voluntarily took part in the
    scheme: multiple witnesses testified that Bowen cooperated with many of the
    alleged co-conspirators—including Perales, Salazar, Kisha Bowen, Christina
    House, and Tibbs—to buy and distribute methamphetamine in the
    Sherman/Denison area. For example, Bowen bought methamphetamine from
    Salazar until Salazar went to jail, after which he gave money to Kisha Bowen
    and Christina House to buy methamphetamine for him from Perales, to whom
    Bowen was eventually introduced because Bowen needed a good source to
    supply his customers in the Sherman/Denison area. Marie Davila testified
    that Bowen sold drugs to her and later paid her to drive him to buy drugs from
    Perales after which Davila helped Bowen package the methamphetamine for
    redistribution in the Sherman/Denison area. Tibbs testified that Bowen pooled
    his money with him so that they could get a better deal on methamphetamine
    from Perales. Accordingly, Bowen’s sufficiency challenge also fails. 6
    B.
    Salazar and Bowen argue that their convictions must be reversed
    because the trial court failed to give a multiple conspiracies jury instruction.
    Where, as here, the defense requested a jury instruction and the request was
    denied, we review the denial for abuse of discretion.            United States v.
    McClatchy, 
    249 F.3d 348
    , 356 (5th Cir. 2001). The court affords “substantial
    latitude to the district court in describing the law to the jury.” United States
    v. Barnes, 
    803 F.3d 209
    , 222 (5th Cir. 2015).
    A multiple conspiracies instruction “is generally required where the
    indictment charges several defendants with one . . . overall conspiracy, but the
    6  As discussed above, the charged conspiracy-wide quantity was established by
    witness testimony. See supra note 5.
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    proof at trial indicates that some of the defendants were only involved in
    separate conspiracies unrelated to the overall conspiracy charged in the
    indictment.” United States v. Castaneda-Cantu, 
    20 F.3d 1325
    , 1333 (5th Cir.
    1994) (second emphasis added). Salazar and Bowen argue that Bowen was in
    only a separate conspiracy unrelated to the drug dealing activities of Salazar
    and other co-conspirators because Bowen acted “independently” of the other
    conspirators.
    Ordinarily, district courts should give a multiple conspiracies instruction
    if there is some evidence that could support a reasonable jury’s finding that the
    defendant was in only an unrelated conspiracy. The government argues that
    here there is no such evidence that Bowen was in only an unrelated conspiracy.
    Assuming, arguendo, that there was such evidence, any error was harmless
    because: (1) the jury was given a detailed conspiracy instruction requiring
    them to find that Bowen was a member of the charged conspiracy; (2) Bowen’s
    counsel was free to, and did, argue that Bowen was not part of the charged
    conspiracy; and (3) the evidence against Bowen was overwhelming. 7                          See
    7  In United States v. Erwin, 
    793 F.2d 656
    , 663 (5th Cir. 1986), we reversed a district
    court’s refusal to give a multiple conspiracy instruction without expressly analyzing whether
    substantial prejudice required reversal. Our earlier case law indicates that a prejudice
    analysis is required for reversal. See, e.g., United States v. LeCompte, 
    599 F.2d 81
    , 82 (5th
    Cir. 1979) (holding that the trial court did not err by failing to instruct on multiple
    conspiracies when the refusal did not prejudice the defendants). And our “later caselaw has
    effectively by-passed” that omission in Erwin. United States v. Frame, 236 F. App’x 15, 18
    (5th Cir. 2007); see, e.g., United States v. Johnson, 
    68 F.3d 899
    , 904 (5th Cir. 1995) (requiring
    defendant-appellant to show that the refusal to give a multiple conspiracies instruction
    “seriously impaired the defendant’s ability to present a given defense” and affirming the
    district court because “[t]he charge given by the trial court adequately instructed the jury
    that it could not convict [the defendant] unless the government proved beyond a reasonable
    doubt that the defendant knowingly joined in the conspiracy described in the indictment” and
    because appellant’s “defense could not have been seriously impaired by the district court’s
    refusal to give the proposed charge”); United States v. Segura, 122 F. App’x 768, 780 (5th Cir.
    2005) (requiring a prejudice analysis when determining whether the trial court erred for
    failure to instruct the jury on multiple conspiracies defense); cf. United States v. Saldivar, 
    48 F.3d 530
    , at *1 (5th Cir. 1995) (unpub.) (stating in the context of an alleged variance between
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    McClatchy, 249 F.3d at 356
    (stating that we will not reverse a refusal to give a
    jury instruction if the refusal did not “seriously impair[] the defendant’s ability
    to present a defense”); United States v. Villafranca, 
    260 F.3d 374
    , 380 (5th Cir.
    2001) (holding that failure to give jury instruction was harmless where
    evidence of guilt is overwhelming).
    C.
    Salazar also argues that his conviction should be reversed because one
    of the prosecutor’s statements during closing argument constituted improper
    vouching for the credibility of government witnesses who had testified
    pursuant to plea agreements.              “The test for improper vouching for the
    credibility of a witness is ‘whether the prosecutor’s expression might
    reasonably lead the jury to believe that there is other evidence, unknown or
    unavailable to the jury, on which the prosecutor was convinced of the accused’s
    guilt.’” United States v. McCann, 
    613 F.3d 486
    , 495 (5th Cir. 2010) (quoting
    United States v. Ellis, 
    547 F.2d 863
    , 869 (5th Cir. 1977)). Salazar contends
    that the italicized portion of the following statement during the prosecutor’s
    rebuttal argument constituted improper bolstering of government witness
    testimony and was unsupported by any evidence at trial:
    . . . [W]hen you are considering the testimony of a person
    who comes into this courtroom, who did you think was gonna come
    in here and testify? . . . Not choirboys, not preachers. It’s gonna
    be the people that are involved. And that’s who we brought you.
    Now, you have to decide whether they’re credible or not; you have
    to decide whether you believe them or not.
    indictment and proof regarding a single or multiple conspiracy that “[a] variance between the
    indictment and proof is not fatal unless it prejudiced the defendant’s substantial rights”).
    Here, the jury was given a detailed instruction on conspiracy, and Bowen’s defense
    counsel argued a multiple conspiracies theory to the jury. Bowen was not substantially
    prejudiced by the trial court’s failure to give a multiple conspiracies instruction. See 
    Johnson, 68 F.3d at 904
    ; Ary-Berry, 424 F. App’x at 351 (citing United States v. Storm, 
    36 F.3d 1289
    ,
    1294 (5th Cir. 1994)).
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    And we did go over the plea agreements ad nauseam. And
    we do that because we want you to see the restrictions and
    conditions that they’re under when they testify. We want you to
    see that if they lie, there are consequences.
    And how are we going to know that they’re lying to us? We’re
    gonna know that because the people that testify that are giving us
    information, they don’t know what we know. They don’t know who
    we’ve talked to. So if we’re talking to individuals and they differ
    between one another, and we’re telling them, “You have to be 100
    percent honest,” and we’ve heard different stories from those people,
    then they’re gonna be called to task for it. Because they’re being
    interviewed at separate times, and the information that the agent
    has developed through his investigation that he knows, and the
    information that he has developed by debriefing other people, not
    only the one that’s giving the information, that he knows is going to
    be used as a barometer to tell us whether that person is telling us
    the truth or not. . . . [Y]ou saw the conditions that are in the plea
    agreement, that if they don’t testify, other charges can be filed
    against them, obstruction of justice, perjury, and that would be
    stacked on top of the time that they’re already looking at. So ask
    yourself: If the goal is to do less time, if the goal is to be with your
    infant child, then it makes no sense for them to come in here and
    lie to you, where they would be exposed to more time. . . .
    So, yes, there has to be some incentive for them to come in
    here and testify, because nobody wants to come in here and testify
    and point someone out and say, ‘that’s the guy that was selling to
    me.’ . . . No one wants to do that. . . .
    So is there any guarantees or promises made to them? No.
    Is there a hope that they may receive something? Yes.
    And they all said that repeatedly. That’s the information
    that you have, ladies and gentlemen, to judge their credibility. We
    didn’t hide their addictions, we didn’t hide their criminal history,
    because we want you to take all of that into consideration. But
    mostly what we want you to do is for you to take their testimony,
    compare it to another person’s testimony that came into this
    courtroom, and see that their testimony matches.
    14
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    No. 14-40654
    Salazar notes, quoting our decision in United States v. Gracia, that a
    prosecutor “may not make a personal assertion regarding a government
    witness’s credibility, cloaking the witness in the Government’s ‘protective
    mantle.’” 
    522 F.3d 597
    , 600–01 (5th Cir. 2008). Salazar argues that because
    the entirety of the evidence against him was based on the testimony of
    government witnesses, the prosecutor’s statement—assuring the jury that the
    government witnesses were truthful because their testimony had been
    compared with other informants’ statements—was an improper bolstering of
    witness testimony that casts serious doubt on the jury’s verdict.
    As we have repeatedly observed, “[a] prosecutor is confined in closing
    argument to discussing properly admitted evidence and any reasonable
    inferences or conclusions that can be drawn from that evidence.” United States
    v. Ceballos, 
    789 F.3d 607
    , 624 (5th Cir. 2015) (quoting United States v. Reagan,
    
    725 F.3d 471
    , 492 (5th Cir. 2013)). “We have repeatedly chastised federal
    prosecutors for making improper remarks in closing arguments—for example,
    for ‘bolstering’ federal agents’ credibility in closing arguments, for attacking
    the character of the defendant, and for attacking the character of defense
    counsel.” United States v. Rodriguez-Lopez, 
    756 F.3d 422
    , 433–34 (5th Cir.
    2014) (citing United States v. Aguilar, 
    645 F.3d 319
    , 324 (5th Cir. 2011); United
    States v. Jefferson, 432 F. App’x 382, 390 (5th Cir. 2011); United States v.
    Murrah, 
    888 F.2d 24
    , 27 (5th Cir. 1989)). In particular, “[e]xcept to the extent
    the prosecutor bases any opinion on the evidence in the case, he may not
    express his personal opinion on the merits of the case or the credibility of
    witnesses.” 
    Ceballos, 789 F.3d at 624
    (quoting United States v. Alaniz, 
    726 F.3d 586
    , 616 (5th Cir. 2013)).
    The prosecutor’s closing argument in this case constituted improper
    vouching. The prosecutor argued in closing that government witnesses should
    15
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    No. 14-40654
    be credited because they would be “called to task” pursuant to their plea
    agreements for any dishonesty—dishonesty which the government was
    positioned to identify based on “the information that the agent has developed
    through his investigation that he knows, and the information he has developed
    by debriefing other people.” That comment “might reasonably lead the jury to
    believe that there is other evidence, unknown or unavailable to the jury,” on
    which the prosecutor was basing his argument as to the witnesses’ credibility.
    See 
    McCann, 613 F.3d at 495
    . We are not persuaded by the government’s
    response that the challenged statement was a permissible rebuttal to Bowen’s
    closing argument, in which Bowen’s attorney argued that the government
    would have no way of knowing whether witnesses were lying so as to enforce
    those witnesses’ plea agreements.      While we have sometimes permitted
    bolstering arguments that specifically respond to attacks on witness
    credibility, such arguments must draw only on evidence before the jury. See
    
    id. at 495–96.
    Here, the jury was not exposed to “the information that the
    agent ha[d] developed through his investigation,” and the prosecutor’s
    credibility argument based on that information was consequently improper.
    Although the challenged statement was improper, it did not “cast serious
    doubt on the correctness of the jury’s verdict.” United States v. Anderson, 
    755 F.3d 782
    , 797 (5th Cir. 2014). The conviction was supported by overwhelming
    evidence of Salazar’s guilt. See 
    id. at 798–99;
    Rodriguez-Lopez, 756 F.3d at
    434
    . Nearly every witness throughout the seven-day trial, including several
    who had not entered into plea agreements with the government, testified to
    Salazar’s significant involvement in the methamphetamine distribution
    conspiracy. Salazar is not entitled to a new trial based on the prosecutor’s
    improper closing argument.
    16
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    No. 14-40654
    D.
    Bowen argues that his sentence should be vacated because the district
    court improperly granted a three-level enhancement for Bowen’s role as a
    manager/supervisor in the conspiracy when the evidence did not support the
    enhancement.
    We review the district court’s interpretation and application of the
    sentencing guidelines de novo and its findings of fact for clear error.
    
    Roetcisoender, 792 F.3d at 550
    . When determining whether an enhancement
    applies, “a district court is permitted to draw reasonable inferences from the
    facts, and these inferences are fact-findings reviewed for clear error as well.”
    United States v. Pillault, 
    783 F.3d 282
    , 286–87 (5th Cir. 2015). The district
    court’s factual finding “is not clearly erroneous if it is plausible in light of the
    record read as a whole,” or, put another way, a district court’s factual findings
    will be held clearly erroneous “only if, based ‘on the entire evidence,’ we are
    ‘left with the definite and firm conviction that a mistake has been committed.’”
    
    Id. Under §
    3B1.1(b) of the U.S. Sentencing Guidelines, a defendant’s base
    offense level should be increased by three levels if the defendant “was a
    manager or supervisor (but not an organizer or leader) and the criminal
    activity involved five or more participants or was otherwise extensive.”
    U.S.S.G. § 3B1.1(b). The Guidelines do not define “manager” or “supervisor,”
    but the commentary notes state that the defendant “must have been . . . the
    manager, or supervisor of one or more other participants.” United States v.
    Nava, 
    624 F.3d 226
    , 229 (5th Cir. 2010) (citing § 3B1.1 cmt. n.2 (2009)). Bowen
    argues that the district court’s finding that he was a manager/supervisor in
    the conspiracy was clearly erroneous because there was no evidence that
    Bowen forced Davila or Cabrelas to work for him. Bowen also argues that
    17
    Case: 14-40654        Document: 00513442554           Page: 18     Date Filed: 03/29/2016
    No. 14-40654
    because Davila and Cabrelas never sold drugs or collected drug money for him,
    Bowen cannot be considered a manager/supervisor.
    At sentencing, the district court found that the evidence at trial showed
    that Bowen was hiring individuals to drive him to pick up drugs, to rent cars
    for those pick-ups, and to rent hotel rooms where the drugs would be packaged
    for distribution, and that such evidence supported a finding that Bowen acted
    in a managerial role in the conspiracy. We agree. Accordingly, it was not error
    for the district court to enhance Bowen’s offense level for his role as a
    manager/supervisor. 8
    III.
    Because we find no reversible error in Appellants’ convictions or Bowen’s
    sentence, we AFFIRM.
    8 In a 28(j) letter filed after the completion of briefing, Bowen also argued for the first
    time that in light of our recently published decision in United States v. Haines, 
    803 F.3d 713
    (5th Cir. 2015), his sentence should be vacated because the district court based its Guidelines
    calculation on the drug quantity attributable to the conspiracy as a whole rather than to him
    individually. We have made clear that any issue not raised in an appellant’s opening brief is
    forfeited. See United States v. Delgado, 
    672 F.3d 320
    , 348–49 (5th Cir. 2012). Moreover,
    Haines is inapposite because in it “[w]e simply [held] that, for purposes of statutory
    minimums at sentencing, the relevant quantity is the quantity attributable to the individual
    defendant,” 
    Haines, 803 F.3d at 742
    , whereas here, Bowen does not challenge the calculation
    of his mandatory minimum sentence but rather his offense level under the Guidelines.
    18