United States v. Marcos Perez-Trevino ( 2018 )


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  • United States Court of Appeals
    For the Eighth Circuit
    ___________________________
    No. 17-1289
    ___________________________
    United States of America
    Plaintiff - Appellee
    v.
    Marcos Perez-Trevino
    Defendant - Appellant
    ___________________________
    No. 17-1352
    ___________________________
    United States of America
    Plaintiff - Appellee
    v.
    Juan Flores, also known as Alejandro Becerra
    Defendant - Appellant
    ___________________________
    No. 17-1718
    ___________________________
    United States of America
    Plaintiff - Appellee
    v.
    Daniela Castellanos
    Defendant - Appellant
    ____________
    Appeals from United States District Court
    for the Northern District of Iowa - Waterloo
    ____________
    Submitted: January 11, 2018
    Filed: May 29, 2018 (Replacement Opinion)
    ____________
    Before COLLOTON, BENTON, and ERICKSON, Circuit Judges.
    ____________
    ERICKSON, Circuit Judge.
    Defendants/Appellants Marcos Perez-Trevino (“Perez-Trevino”); Juan Flores,
    a/k/a Alejandro Becerra (“Flores”); and Daniela Castellanos (“Castellanos”) were
    tried together by a jury in the United States District Court for the Northern District
    of Iowa for their roles in a conspiracy to distribute methamphetamine. All three were
    found guilty and were sentenced by the court. After carefully considering the several
    issues raised by the appellants, we affirm the judgments of the district court.1
    1
    The Honorable Linda R. Reade, then Chief Judge, United States District
    Court for the Northern District of Iowa, adopting reports and recommendations from
    the Honorable Jon Stuart Scoles, then United States Chief Magistrate Judge for the
    Northern District of Iowa, with respect to the motions to suppress.
    -2-
    I.    BACKGROUND/PROCEDURE
    In August 2015, eleven defendants, including the appellants, were charged in
    a conspiracy to deliver methamphetamine in and around Marshalltown, Iowa. Several
    of the defendants entered guilty pleas, but the appellants chose to proceed to a jury
    trial. During the six-day trial, some of the defendants’ original co-conspirators
    cooperated with the government and testified, hoping for more favorable sentencing
    recommendations.
    Prior to trial, Perez-Trevino moved to suppress evidence obtained during an
    August 12, 2015, traffic stop in Oklahoma. Perez-Trevino argued that the vehicle
    was improperly impounded and the inventory search was unlawful. The motion was
    heard by the chief magistrate judge, and Chouteau (Oklahoma) Police Officer Thomas
    Scott Fisher testified at the hearing. The chief magistrate judge issued a report and
    recommendation that the motion be denied. The district court overruled Perez-
    Trevino’s objections, adopted the report and recommendation, and denied the motion.
    Castellanos brought a pretrial motion to suppress evidence obtained from the
    interception of wire and electronic communications of a cell phone identified as
    Target Telephone #16, arguing that the application for the wiretap: (1) lacked
    sufficient specificity to establish probable cause, and (2) failed to sufficiently show
    the wiretap was necessary as required by 
    18 U.S.C. § 2518
    (3)(c). After argument on
    the motion without any additional evidence, the chief magistrate judge, finding the
    affidavit sufficient, issued a report and recommendation that the motion be denied.
    The district court overruled Castellanos’s objections, adopted the report and
    recommendation, and denied the motion.
    During the five-day trial, the government witnesses testified about information
    gleaned during the investigation including evidence obtained from intercepts of
    several telephones. The cooperating co-conspirators testified about their own
    -3-
    participation in the conspiracy and their knowledge of the participation of the three
    defendants. Following the procedures outlined in United States v. Bell, 
    573 F.2d 1040
     (8th Cir. 1978), the trial court conditionally admitted hearsay evidence from
    alleged co-conspirators. Much of the testimony referenced Mario Murillo-Mora, a
    member of the conspiracy to distribute methamphetamine, who was connected by
    evidence to each of the defendants, as well as to other members of the conspiracy.
    The evidence revealed that the reason the government targeted various electronic
    devices, including telephone #16, was their connection to communications to and
    from Murillo-Mora related to the distribution of narcotics.
    At the end of the government’s case, the court entertained objections to the co-
    conspirator hearsay testimony. The court overruled the objections, finding that each
    of the admitted statements was made by a co-conspirator in the course of and in
    furtherance of the conspiracy. The court denied Perez-Trevino’s request for a jury
    instruction on multiple conspiracies and an instruction regarding a mere buyer/seller
    relationship.
    The jury found Perez-Trevino guilty of conspiracy to distribute 500 grams or
    more of a substance containing a detectable amount of methamphetamine, which
    contained more than 50 grams of pure methamphetamine, in violation of 
    21 U.S.C. §§ 841
    (a)(1), 841(b)(1)(A), and 846. Flores and Castellanos were found guilty of
    conspiracy to distribute methamphetamine, in violation of 
    21 U.S.C. §§ 841
    (a)(1),
    841(b)(1)(C), and 846. The district court sentenced Perez-Trevino to 292 months’
    imprisonment and sentenced Flores and Castellanos to 240 months’ imprisonment.
    II.   SUPPRESSION MOTIONS
    “When reviewing the denial of a motion to suppress, we review a district
    court’s factual findings for clear error and legal conclusions de novo.” United States
    v. Evans, 
    781 F.3d 433
    , 436 (8th Cir. 2015) (citing United States v. Harris, 747 F.3d
    -4-
    1013, 1016 (8th Cir. 2014)). We “will affirm the district court’s denial of a motion
    to suppress evidence unless it is unsupported by substantial evidence, based on an
    erroneous interpretation of applicable law, or, based on the entire record, it is clear
    a mistake was made.” United States v. Collins, 
    883 F.3d 1029
    , 1031 (8th Cir. 2018)
    (quoting United States v. Braden, 
    844 F.3d 794
    , 799 (8th Cir. 2016)). We may affirm
    on any ground supported by the record. United States v. Murillo-Salgado, 
    854 F.3d 407
    , 414 (8th Cir. 2017). For example, in United States v. Wells, 
    347 F.3d 280
    , 287
    (8th Cir. 2003), we affirmed the denial of a motion to suppress based on the
    automobile exception to the warrant requirement rather than on the search-incident-
    to-arrest exception on which the district court relied.
    A. Perez-Trevino - Search of Automobile and Contents
    On August 12, 2015, Officer Fisher noticed a 2000 Oldsmobile Intrigue with
    North Dakota license plates traveling north on Highway 69 in Oklahoma. He stopped
    the vehicle for a taillight violation. As he approached the vehicle, Officer Fisher
    observed two occupants in the car. Perez-Trevino presented an identification card to
    Officer Fisher but claimed to be licensed in Texas. Officer Fisher had separate
    conversations with Perez-Trevino and the passenger. The two gave conflicting
    stories as to their destination: Perez-Trevino indicating Iowa City and the passenger
    claiming Marshalltown. Officer Fisher ran Perez-Trevino’s identifying information
    and determined that he did not have a valid license.2 A license check for the
    passenger revealed that his license was suspended. Officer Fisher arrested Perez-
    Trevino for driving without a license. Having been instructed by the chief of police
    that stopped vehicles are not to be left abandoned on the roadside, Officer Fisher
    arranged to have the vehicle towed. Before the vehicle was towed, Officer Fisher
    2
    At trial, Officer Fisher testified that Perez-Trevino’s driving license was
    suspended in North Dakota, but at the suppression hearing he indicated that Perez-
    Trevino was unlicensed.
    -5-
    prepared to do an inventory search of the vehicle in order to log any valuables.
    Officer Fisher testified:
    Any time we have arrested someone out of a vehicle or we have made
    contact with somebody where a vehicle – where we have become liable
    for it because of an action from us, we must impound that vehicle with
    the two wrecker services we have on rotation and then we have to
    conduct a thorough vehicle inventory.
    When Officer Fisher leaned inside the vehicle to begin the inventory, he
    smelled raw marijuana “directly over the center console.” He checked the contents
    of the center console because, according to his testimony, “[i]t’s a common place,
    along with the glove box, for valuables or anything somebody is going to store in the
    vehicle.” When he lifted the console, he discovered a plastic bag containing a green
    leafy substance, which was later determined to be marijuana. The inventory search
    further uncovered various food items and drinks. A one dollar bill containing a clear
    substance, later determined to be methamphetamine, was found under the passenger
    seat. Located in the back seat was a large cooler. Upon opening the cooler, Officer
    Fisher found more food and drinks and a Ziploc bag “containing a large amount of
    methamphetamine.” It was later determined that the bag contained 877 grams of
    methamphetamine. A list of items found in the search was reported on a
    “CHOUTEAU POLICE DEPT. STORED VEHICLE REPORT” which indicated the
    vehicle was registered in North Dakota to Marcos and Maria Perez.
    The Chouteau Police Department has a published policy for “Impoundment of
    Vehicles” that provides guidance for impounding and inventorying vehicles. Among
    the several stated reasons for impounding vehicles are safekeeping of evidence and
    “public assistance towing.” The public assistance towing section specifically requires
    towing “[w]hen, following arrest of the owner/operator or for other reasons, the
    vehicle cannot be left at the scene without substantial risk of theft from or damage to
    -6-
    the vehicle or personal property contained therein.” The policy’s inventory procedure
    provides:
    1.     It is the duty of all officers, who impound motor vehicles, to
    perform an inventory of those vehicles.
    2.     The purpose of this inventory will be to ensure a proper
    accounting of all property in or attached to the vehicle in order to
    protect the officer from liability of assumed damages and/or
    missing property.
    3.     The officer performing the inventory will conduct a thorough and
    uniform inventory of the vehicle and its compartments.
    One of the regulations listed in the policy statement provides that “[o]fficers should
    take all necessary precautions when towing a vehicle to properly search and inventory
    a vehicle. An inventory search is intended to protect the citizen, the officer and the
    wrecker company from claims of loss and theft.”
    Citing Florida v. Wells, 
    495 U.S. 1
     (1990), Perez-Trevino argues that the
    inventory search of the car violated the Fourth Amendment because the Chouteau
    Police Department policy did not provide sufficiently standardized criteria for
    searching closed containers inside the vehicle. “It is ‘well-settled’ law that ‘a police
    officer, after lawfully taking custody of an automobile, may conduct a warrantless
    inventory search of the property to secure and protect vehicles and their contents
    within police custody.’” United States v. Williams, 
    777 F.3d 1013
    , 1015 (8th Cir.
    2015) (quoting United States v. Rehkop, 
    96 F.3d 301
    , 305 (8th Cir. 1996)). The
    search “must comply with ‘standardized police procedures.’” Id. at 1016 (quoting
    United States v. Mayfield, 
    161 F.3d 1143
    , 1145 (8th Cir. 1998)). “The police are not
    precluded from conducting inventory searches when they lawfully impound the
    vehicle of an individual that they also happen to suspect is involved in illegal
    activity.” United States v. Pappas, 
    452 F.3d 767
    , 771 (8th Cir. 2006) (quoting United
    States v. Marshall, 
    986 F.2d 1171
    , 1175-76 (8th Cir. 1993)). We conclude that the
    -7-
    Chouteau Police Department towing policy contained sufficiently standardized police
    procedures for Officer Fisher to inventory the contents of the vehicle and its
    compartments.
    We do not decide whether the Chouteau inventory policy provided Officer
    Fisher with authority to open the cooler. Instead, we affirm the denial of the motion
    to suppress because, at the time he opened the cooler, Officer Fisher had sufficient
    probable cause to search the vehicle and its contents under the “automobile
    exception” to the Fourth Amendment warrant requirement. Accord United States v.
    Winters, 
    221 F.3d 1039
    , 1042 (8th Cir. 2000) (“Trooper Busch then smelled raw
    marijuana. This created probable cause to search the car and its containers for
    drugs.”). “Under the automobile exception, officers may search a vehicle without a
    warrant if they have probable cause to believe the vehicle contains evidence of
    criminal activity.” United States v. Davis, 
    569 F.3d 813
    , 817 (8th Cir. 2009) (quoting
    United States v. Cortez-Palomino, 
    438 F.3d 910
    , 913 (8th Cir. 2006) (per curiam).
    Prior to searching inside the cooler, Officer Fisher had obtained contradictory
    statements from the car’s occupants as to their destination, discovered the plastic bag
    containing the marijuana, and found the dollar bill containing apparent drug residue.
    This was sufficient probable cause to search inside the cooler. Accord Davis, 
    569 F.3d at 817-18
     (“If there had been any doubt about whether the smell of smoldering
    cannabis constituted probable cause to search the vehicle, such doubt was obviated
    by the discovery of a bag of marijuana in Davis’s pocket.”).
    B. Castellanos - Wiretap of Target Telephone #16
    Daniela Castellanos argues that the district court erred in denying her motion
    to suppress evidence gained from the wiretap of Target Telephone #16. In 
    18 U.S.C. § 2518
    , Congress defined the procedure that must be followed for the “interception
    of wire, oral, or electronic communications.” 
    18 U.S.C. § 2518
    (10)(a) provides:
    -8-
    Any aggrieved person in any trial, hearing, or proceeding in or before
    any court, department, officer, agency, regulatory body, or other
    authority of the United States, a State, or a political subdivision thereof,
    may move to suppress the contents of any wire or oral communication
    intercepted pursuant to this chapter, or evidence derived therefrom, on
    the grounds that –
    (i) the communication was unlawfully intercepted;
    (ii) the order of authorization or approval under which it was intercepted
    is insufficient on its face; or
    (iii) the interception was not made in conformity with the order of
    authorization or approval.
    “The remedies and sanctions described in [chapter 18] with respect to the interception
    of electronic communications are the only judicial remedies and sanctions for
    nonconstitutional violations of this chapter involving such communications.” 
    18 U.S.C. § 2518
    (10)(c). An “aggrieved person” is defined at 
    18 U.S.C. § 2510
    (11) as
    “a person who was a party to any intercepted wire, oral, or electronic communication
    or a person against whom the interception was directed.” In paragraph No. 2 of her
    motion to suppress the wiretap evidence, Castellanos alleges: “During the period of
    time the wiretap authorization was in place, the government contends that Ms.
    Castellanos was heard on or a party in some of the phone calls and text messages
    involving target telephone 16.”
    Castellanos contends that her motion should have been granted because the
    affidavit attached to the warrant application did not contain sufficient facts to support
    a finding of probable cause or of necessity as required by 
    18 U.S.C. § 2518
    (3)(a-c).
    We address each asserted error separately, United States v. Thompson, 
    690 F.3d 977
    ,
    984-87 (8th Cir. 2012), and hold that the district court did not err in denying the
    motion to suppress.
    -9-
    1. Probable Cause
    Section 2518 requires a two-step probable cause analysis. First, there must be
    probable cause that an individual has committed, is committing, or is about to commit
    a crime listed in 
    18 U.S.C. § 2516
    . 
    18 U.S.C. § 2518
    (3)(a). Second, the application
    must show probable cause that “particular communications” relating to the specific
    offense will be obtained from the interception of the communication. 
    18 U.S.C. § 2518
    (3)(b). “We have long held” that the probable cause standards in section 2518
    “are co-extensive with the constitutional requirements” of the Fourth Amendment.
    United States v. Gaines, 
    639 F.3d 423
    , 430 (8th Cir. 2011) (quoting United States v.
    Leisure, 
    844 F.2d 1347
    , 1354 (8th Cir. 1988)). This guides us in our review of the
    district court’s probable cause analysis. We also recognize, however, that the
    particularity requirements of section 2518(3)(b) are defined by the statute. 
    Id.
     at 431-
    32 (citing United States v. Donovan, 
    429 U.S. 413
    , 416, 428 (1977)). The first step
    is not disputed as § 2516(1)(e) lists any offense involving “the manufacture,
    importation, receiving, concealment, buying, selling, or otherwise dealing in narcotic
    drugs, marihuana, or other dangerous drugs, punishable under any law of the United
    States.”
    Our analysis focuses on the second step. The application for the wiretap
    warrant identified Target Telephone #16 as subscribed to Geoffrey Forney of Des
    Moines, Iowa, and used by Mario Murillo-Mora. The application sought
    authorization for intercepting “wire and electronic communications” of several named
    individuals, including Murillo-Mora, and several unknown males and females who
    had been communicating with Murillo-Mora and other co-conspirators on prior
    authorized electronic communication interceptions. Castellanos was not one of the
    individuals identified in the application. An application for authorizing a wiretap
    must identify “the person, if known, committing the offense and whose
    communications are to be intercepted.” 
    18 U.S.C. § 2518
    (1)(b)(iv). The Supreme
    Court has interpreted the statute as not requiring the government “to identify an
    -10-
    individual in the application unless it has probable cause to believe (i) that the
    individual is engaged in the criminal activity under investigation and (ii) that the
    individual’s conversations will be intercepted over the target telephone.” United
    States v. Donovan, 
    429 U.S. 413
    , 423 (1977) (citing United States v. Kahn, 
    415 U.S. 143
     (1974)). A wiretap application must, however, “name an individual if the
    Government has probable cause to believe that the individual is engaged in the
    criminal activity under investigation and expects to intercept the individual’s
    conversations over the target telephone.” Id. at 428. A district court’s grant of an
    application for a wiretap is appropriate if it is the result of a “practical, common-sense
    decision” that “considering the ‘totality-of-the-circumstances . . . there is a fair
    probability that contraband or evidence of a crime will be found in a particular
    place.’” Thompson, 690 F.3d at 984-85 (quoting Illinois v. Gates, 
    462 U.S. 213
    , 238
    (1983)). “In determining probable cause we are bound to consider only the facts
    contained within the four corners of the affidavit.” United States v. Milton, 
    153 F.3d 891
    , 894 (8th Cir. 1998) (citing United States v. Gladney, 
    48 F.3d 309
    , 312 (8th Cir.
    1995)).
    The application for the wiretap authorization order specifically names more
    than twenty individuals, in addition to several yet unidentified target subjects
    suspected in the conspiracy to distribute narcotics, based on investigations from prior
    court-authorized wiretaps. The government sufficiently identified all of the
    individuals it had probable cause to believe were involved in criminal activity.
    The application informed the court of the type of evidence law enforcement
    expected to recover from the targeted telephone. It states:
    In particular, these wire and electronic communications are expected to
    include conversations of an evidentiary nature revealing:
    1)     The details of carrying out the above-named offenses;
    -11-
    2)     The identity of individuals as yet unknown who are
    involved in these offenses and the extent of their
    involvement;
    3)     The times and places where illegal transactions will occur;
    4)     The amounts, prices, etc., of illegal narcotics/controlled
    substances which have been and are being possessed and
    distributed by these individuals;
    5)     The identity of the source of these illegal drugs and the
    extent of the source’s involvement;
    6)     The manner in which money derived from the sale of
    illegal narcotics/controlled substances is utilized,
    concealed and dispensed;
    7)     The arrangement and verification of meetings between
    individuals involved in the above-named offenses;
    8)     The nature and scope of the continuing conspiracy; and
    9)     The role of each person participating in the conspiracy.
    Attached to the application is an affidavit of Bryan J. Furman, a Task Force
    Officer with the Drug Enforcement Administration (“DEA”) in Cedar Rapids, Iowa.
    At the time he prepared the affidavit, Officer Furman had over twenty years
    experience in law enforcement and had been with the DEA for over five years. His
    experience provided him with knowledge of the language and terminology used by
    illegal narcotics dealers to disguise their illegal activity. The affidavit informs the
    court of the facts which led the investigators to Target Telephone #16. For example,
    Murillo-Mora was known to be operating mostly out of the Marshalltown, Iowa, area
    and was using multiple telephones to communicate with co-conspirators to facilitate
    the drug trafficking. Murillo-Mora was identified as using Target Telephone #16 to
    conduct business with other known co-conspirators using targeted telephones already
    subject to court-authorized wiretaps. Transcripts of specific conversations involving
    the facilitation of narcotics deliveries are included in the affidavit.
    The affidavit contains more than twenty-five pages, including nineteen separate
    paragraphs, detailing information known to the Task Force that supported the
    -12-
    application to intercept communications from Target Telephone #16. Castellanos
    contends that because Furman repeatedly used the phrase “I believe” to introduce his
    factual references, the statements are not facts that the magistrate can rely on but are
    instead mere beliefs, hunches, and speculative opinions. Such hyper-technical parsing
    of phrasing is inconsistent with the evidence and common sense. While it might
    have been more appropriate for Officer Furman to have written “it is my opinion,
    based on my experience in law enforcement and narcotics investigations,” rather than
    “I believe,” his choice of words did not negate the factual information he related to
    the court in the affidavit.
    Based on all of the circumstances, we conclude that the district court’s grant
    of authority to intercept communications to and from Target Telephone #16 was the
    result of a “practical, common-sense decision” that there was a “fair probability that
    contraband or evidence” of criminal activity would be found. E.g., Thompson, 690
    F.3d at 984-85. The application and affidavit contained sufficient facts to establish
    probable cause.
    2. Necessity
    In addition to finding probable cause, in order to issue a warrant for a wiretap,
    the court must find that “normal investigative procedures have been tried and have
    failed or reasonably appear to be unlikely to succeed if tried or to be too dangerous.”
    
    18 U.S.C. § 2518
    (3)(c). “This necessity requirement prevents the government from
    routinely using wiretaps ‘as the initial step in an investigation.’” United States v.
    Colbert, 
    828 F.3d 718
    , 725 (8th Cir. 2016) (quoting United States v. Thompson, 
    210 F.3d 855
    , 858-59 (8th Cir. 2000)). “But as we have repeatedly held, the necessity
    requirement does not mandate that the government ‘exhaust all possible techniques
    before applying for a wiretap.’” 
    Id.
     (quoting United States v. Macklin, 
    902 F.2d 1320
    ,
    1326-27 (8th Cir. 1990)). “The government is simply not required to use a wiretap
    only as a last resort.” Macklin, 
    902 F.2d at
    1327 (citing United States v. Matya, 541
    -13-
    F.2d 741, 745 (8th Cir. 1976)). The issuing judge determines “in a commonsense
    manner” whether the necessity requirement is met. 
    Id.
     (citations omitted). We may
    reverse this determination of fact only if it is clearly erroneous. Thompson, 690 F.3d
    at 986 (quoting Macklin, 
    902 F.2d at 1327
    )).
    This is not a case in which the government decided to use a wiretap at the
    beginning of its investigation of criminal activity. Officer Furman’s affidavit
    contains sixty-eight paragraphs providing details of various investigative techniques
    used prior to requesting the wiretap of Target Telephone #16. Investigators utilized
    prior wiretaps, confidential sources, controlled purchases, physical surveillance,
    undercover agents, search warrants, interviews, and trash searches, among other
    strategies. Investigators interviewed suspects and utilized grand jury subpoenas to
    the extent possible. The affidavit adequately explains the limited success of specific
    investigative techniques, the likely lack of success of certain strategies, and the
    possible dangers related to particular investigative tactics. The affidavit indicates that
    the application was based on the conclusion that “[t]he only reasonable method of
    developing the necessary evidence of violations is to intercept telephonic and
    electronic communications as requested.”
    Officer Furman’s affidavit contains sufficient facts to support a finding that the
    necessity requirement of § 2518(3)(c) was met. The district court determination on
    this issue is not clearly erroneous.
    III.   PEREZ-TREVINO’S MOTION FOR JUDGMENT OF ACQUITTAL
    We review de novo a denial of a motion for judgment of acquittal, “evaluating
    the evidence in the light most favorable to the verdict and drawing all reasonable
    inferences in its favor.” United States v. Almeida-Olivas, 
    865 F.3d 1060
    , 1062 (8th
    Cir. 2017) (quoting United States v. Wright, 
    739 F.3d 1160
    , 1167 (8th Cir. 2014)).
    The conviction will not be disturbed unless “no reasonable jury could have found the
    -14-
    defendant guilty beyond a reasonable doubt.” 
    Id.
     (quoting United States v. Serrano-
    Lopez, 
    366 F.3d 628
    , 634 (8th Cir. 2004)). To prove a conspiracy, “the government
    need not prove a formal agreement existed, but rather ‘a tacit understanding’ between
    the parties.” United States v. Parker, 
    871 F.3d 590
    , 600-01 (8th Cir. 2017) (quoting
    United States v. May, 
    476 F.3d 638
    , 641 (8th Cir. 2007)). “We will not reverse the
    verdict if the evidence is sufficient for a jury to find beyond a reasonable doubt that
    the defendant participated in the conspiracy.” 
    Id.
    “To convict [Perez-Trevino] for conspiracy to distribute more than 500 grams
    of a mixture and substance containing methamphetamine, ‘the government must
    prove: (1) that there was a conspiracy, i.e., an agreement to distribute the
    [methamphetamine]; (2) that [Perez-Trevino] knew of the conspiracy; and (3) that
    [he] intentionally joined the conspiracy.’” Almeida-Olivas, 865 F.3d at 1062 (quoting
    United States v. Sanchez, 
    789 F.3d 827
    , 834 (8th Cir. 2015) (second alteration in
    original)). Perez-Trevino argues that there was insufficient evidence for a jury to find
    proof beyond a reasonable doubt that he knew of the conspiracy or intentionally
    joined it. He cites United States v. Carper, 
    942 F.2d 1298
     (8th Cir. 1991), and United
    States v. Cox, 
    942 F.2d 1282
     (8th Cir. 1991), to support his argument for acquittal.
    In Cox, we reiterated that “[a] conspiracy conviction requires a showing that the
    alleged individuals joined together to further an agreed-to criminal purpose: here,
    distribution of cocaine.” 942 F.2d at 1285 (citations omitted). Because the
    government’s evidence failed to “explain why various unnamed individuals
    accompanied Cox,” we reversed his conspiracy conviction. Id. at 1285-86. We
    specifically explained: “Without some evidence that the accompanying individuals
    agreed to take cocaine for distributive purposes, we do not see how a rational trier of
    fact could find beyond a reasonable doubt that a conspiracy existed for that purpose.”
    Id. at 1286. In Carper, we reversed Juliette Stark’s conviction because the evidence
    never identified her unnamed source for methamphetamine. 942 F.2d at 1302. We
    noted that, without speculating that Carper was her source, the evidence tended “to
    -15-
    prove Juliette Stark is guilty of a crime, but not conspiracy with Carper to distribute
    methamphetamine.” Id.
    As the trial court summarized in its order denying the motion for acquittal,
    substantial evidence supported the finding that a conspiracy to distribute
    methamphetamine existed, Perez-Trevino knew of the conspiracy, and he
    intentionally participated in the conspiracy. Witnesses, who included six co-
    conspirators, confirmed the existence of a dynamic conspiracy, in which several
    individuals participated. Perez-Trevino, along with Murillo-Mora and Flores,
    participated as higher-level suppliers of methamphetamine, supplying some of the
    same customers. Perez-Trevino was caught several times with substantial amounts
    of methamphetamine in his possession. Perez-Trevino resided with other co-
    conspirators, exchanged multiple telephone calls with co-conspirators, including
    Murillo-Mora and Jessica Ceniceros, and purchased a vehicle from one of the co-
    conspirators. Perez-Trevino used Ceniceros’s garage to store two pounds of
    methamphetamine. In exchange, Ceniceros kept a quarter of a pound to sell for
    herself. Vania Guadarrama, a member of the conspiracy who testified at trial,
    purchased methamphetamine from a source known as El Bote, who also supplied
    methamphetamine to Perez-Trevino. Guadarrama testified that she purchased
    methamphetamine from Perez-Trevino. There was also evidence that Perez-Trevino
    “fronted” methamphetamine to Guadarrama and later went to her residence to collect
    an undischarged debt.
    Substantial evidence supports the jury verdict. Cox and Carper are clearly
    distinguishable. The record contains evidence that Perez-Trevino had direct and
    substantial contact with several known, identified conspirators. Further, the evidence
    shows that these contacts were for the purpose of facilitating the distribution of
    methamphetamine in and around Marshalltown, Iowa. Accord United States v.
    Garcia, 
    569 F.3d 885
    , 889 (8th Cir. 2009) (“A reasonable jury evaluating this
    evidence could find that [defendant] was an actual participant in the
    -16-
    methamphetamine-distribution conspiracy.”). The district court correctly denied the
    motion for judgment of acquittal.
    VI.   PEREZ-TREVINO’S             PROPOSED          MULTIPLE          CONSPIRACY
    INSTRUCTION
    “The ‘issue of whether the defense produced sufficient evidence to sustain a
    particular instruction, such as a multiple conspiracy instruction, is generally a
    question of law subject to de novo review.’” United State v. Maza, 
    93 F. 3d 1390
    ,
    1398 (8th Cir. 1996) (quoting United States v. Jackson, 
    67 F.3d 1359
    , 1367 (8th Cir.
    1995)); see also United States v. Hull, 
    419 F.3d 762
    , 769 (8th Cir. 2005). When the
    evidence supports the existence of a single conspiracy, a court does not err in denying
    a request for a multiple conspiracy instruction. In United States v. Delgado, 
    653 F.3d 729
    , 735-36 (8th Cir. 2011) (citations omitted) (internal quotation marks omitted), we
    summarized:
    A single conspiracy is composed of individuals sharing common
    purposes or objectives under one general agreement. In evaluating
    whether a variance occurred, we look to the totality of the circumstances
    and give the verdict the benefit of all reasonable inferences that can be
    drawn from the evidence. A variance based on multiple conspiracies
    justifies reversal only if a “spillover” of evidence from one conspiracy
    to another prejudices the defendant’s substantial rights.
    A single conspiracy is not converted to multiple conspiracies simply because different
    defendants enter a conspiracy at different times or perform different functions. Maza,
    
    93 F.3d at
    1398 (citing United States v. Baker, 
    855 F.2d 1353
    , 1357 (8th Cir. 1988).
    Nor does “the fact that different individual defendants contributed a portion of the
    total drugs to suppliers or participated in numerous separate transactions . . . convert
    a single conspiracy to multiple conspiracies.” 
    Id.
     at 1398-99 (citing United States v.
    Spector, 
    793 F.2d 932
    , 935 (8th Cir. 1986). A single conspiracy can be proven even
    -17-
    though the participants and their activities change over time. United States v. Slagg,
    
    651 F.3d 832
    , 840 (8th Cir. 2011). This is true even if some participants are unknown
    to other conspirators or uninvolved in some transactions. United States v. Longs, 
    613 F.3d 1174
    , 1176 (8th Cir. 2010). Drug dealers who sometimes compete with one
    another may in fact be members of the same conspiracy. Slagg, 
    651 F.3d at 842
    ;
    Delgado, 
    653 F.3d at
    736 (citing United States v. Jeffers, 
    570 F.3d 557
    , 568 (4th Cir.
    2009)).
    As indicated above, the evidence at trial easily supports a finding that Perez-
    Trevino knowingly participated in the single conspiracy alleged at trial. The trial
    court did not err in denying the motion for a jury instruction on multiple
    conspiracies.3
    V.    DEFENDANTS’ OBJECTIONS TO THE ADMISSION OF TESTIMONY
    “We review the district court’s admission of evidence for an abuse of
    discretion, affording ‘deference to the district judge who saw and heard the
    evidence.’” United States v. Melton, 
    870 F.3d 830
    , 837 (8th Cir. 2017) (quoting
    United States v. Two Elk, 
    536 F.3d 890
    , 900 (8th Cir. 2008)). “An evidentiary ruling
    is harmless if the substantial rights of the defendant were unaffected, and the error
    had no, or only a slight, influence on the verdict.” 
    Id.
     (quoting United States v.
    Worman, 
    622 F.3d 969
    , 976 (8th Cir. 2010)). We will affirm the district court’s
    decision unless we find an abuse of discretion that is both clear and prejudicial. E.g.,
    United States v. Womack, 
    191 F.3d 879
    , 883 (8th Cir. 1999).
    3
    There is no indication that Perez-Trevino was inhibited from arguing his lack
    of knowledge of, or participation in, the conspiracy as it was alleged at trial. A trial
    court does not err in denying a proposed instruction when the instructions as a whole
    adequately advise the jury of the law and permit the parties to argue appropriately to
    the jury. See United States v. Thunder, 
    745 F.3d 870
    , 874 (8th Cir. 2014) (citing
    United States v. Christy, 
    647 F.3d 768
    , 770 (8th Cir. 2011)).
    -18-
    A. Flores/Castellanos - Hearsay Co-conspirators
    To admit “statements of co-conspirators against a defendant ‘the government
    must prove by a preponderance of the evidence that (1) a conspiracy existed; (2) the
    defendant and the declarant were members of the conspiracy; and (3) the declaration
    was made during the course of and in furtherance of the conspiracy.’” Womack, 
    191 F.3d at 883
     (quoting United States v. Guerra, 
    113 F.3d 809
    , 813 (8th Cir. 1997)); Fed.
    R. Evid. 801(d)(2)(E). In Bell, we provided guidance to district courts for ruling on
    objections to the admission of out-of-court statements of co-conspirators. We
    outlined a procedure that included conditionally admitting the evidence and then
    ruling on the objections at the close of the government’s case. 
    573 F.2d at 1044
    . The
    procedural steps are made outside of the jury’s presence, and the court makes its
    admissibility ruling on the record before submitting the case to the jury. 
    Id.
    The trial court properly followed the Bell procedure, conditionally admitting
    the statements and then taking up the objections at the close of evidence. The
    evidence objected to on hearsay grounds included the following:
    1)     A statement by witness Rachel Berrones in which she testified that
    Murillo-Mora said he was upset with Castellanos because he had given
    Castellanos money to wire to Mexico and she told him the money was
    stolen. He expressed to Berrones his view that Castellanos lied and
    spent the money.
    2)     A statement by witness Rogelio Avalos-Sanchez concerning what
    Murillo-Mora said regarding Flores’s involvement in the organization.
    The testimony indicated Flores was Murillo-Mora’s driver until they
    ended their friendship because they were not agreeing on business and
    Murillo-Mora wanted to go his separate way.
    3)     Testimony by Avalos-Sanchez as to what Murillo-Mora told him about
    using Castellanos to transfer money.
    -19-
    The trial court overruled all of the objections, concluding that a preponderance of the
    evidence supported a finding that a conspiracy existed, the statements were made by
    conspirators, and the statements provided information furthering the conspiracy. We
    hold that the district court did not abuse its discretion by admitting the evidence under
    rule 801(d)(2)(E) because the statements furthered the conspiracy by identifying co-
    conspirators and their roles. Accord United States v. Camacho, 
    555 F.3d 695
    , 703
    (8th Cir. 2009) (recognizing that the “district court made the appropriate Bell inquiry
    and we cannot say that its findings are erroneous” and holding that the district court’s
    ruling was not an abuse of discretion).
    B. Flores - Letters
    Flores challenges the admission of testimony by co-conspirator Frances Gasca.
    During cross-examination of Gasca, Flores’s attorney asked about two letters Gasca
    sent to Flores while she was in pretrial detention. The government was unaware of
    the correspondence between Gasca and Flores before the questioning began. While
    answering the questions regarding her letters to Flores, Gasca attempted to explain
    that she was responding to communications she had received from Flores. Her
    explanation was truncated by defense counsel. On redirect, the government’s counsel
    asked Gasca to explain what she wanted to explain during cross-examination. Gasca
    began, “I wrote that because he wrote a letter to Daniela Castellanos saying for me
    to tell everybody that . . .,” at which time Flores’s counsel interrupted with an
    objection for lack of foundation. The court, apparently sensing a failure in the
    foundation, directed the government to “break that down a little bit so that we don’t
    have an objection.” The following redirect ensued:
    Q.     You were housed with Ms. Castellanos at some point in time?
    A.     Yes.
    Q.     And during that time did she show you letters from Juan Flores?
    A.     Yes.
    Q.     And did you read those letters?
    -20-
    A.    Yes.
    Q.    And what did he write to Ms. Castellanos in those letters?
    A.    To say that –
    MR. BELL: Objection, foundation as to who wrote the letter.
    THE COURT: Objection overruled. You may answer.
    A.    To say that – to tell them that I was – he was only taking me to D
    to have sex with and that he was just my ride and that there was
    no involvement of meth.
    Q.    So Mr. Flores wrote Ms. Castellanos a letter trying to tell you
    what to say in court today?
    A.    That was a while ago, but, yes.
    Gasca then testified that she saw that letter with her own eyes. During recross-
    examination, Flores’s attorney elicited the following testimony:
    Q.    Now, as I understand your response to Ms. Williams’s questions
    about writing this letter to Juan, you indicated that you did not
    receive any letter from Juan; it was somebody else who allegedly
    received it?
    A.    Yes.
    Q.    And when you – has Juan ever written to you other than – has
    Juan ever written a letter to you?
    A.    He sent me a card.
    Q.    When?
    A.    I don’t remember, but it was maybe February.
    Q.    And what did he – did he handwrite anything on it or did he just
    sign it?
    A.    He wrote – I can’t recall exactly what he wrote, but he signed it
    as well.
    *      *     *
    Q.    Okay. And how many times did you see this letter that is alleged
    to have been sent by Juan to Ms. Castellanos?
    A.    Like once or twice.
    *      *     *
    Q.    And when you saw this letter in the jail, that was in the Linn
    County Jail?
    -21-
    A.     Yes.
    Q.     When you saw it, was the envelope already open?
    A.     Yes.
    Q.     Okay. Were you present when the envelope was opened?
    A.     Was I? No.
    Q.     Since you had never seen anything that Juan had written before,
    I’m assuming you couldn’t identify whether that was his writing
    or not in that letter, correct.
    A.     Correct.
    Q.     And you have no idea if that was what was in the letter – in the
    envelope when it came or whether somebody replaced it with
    something else?
    A.     Well, I saw letters prior to that that he wrote that had the same
    writing.
    Q.     From who?
    A.     Daniela, from Juan.
    Q.     But you never independently obtained his writing to verify?
    A.     No.
    Q.     And you’re certainly not a handwriting expert?
    A.     What?
    Q.     You’re certainly not a handwriting expert?
    A.     No.
    By the time Flores was done with his recross-examination of Gasca, he had elicited
    the necessary foundation. The testimony informed the jury that Gasca was not a
    handwriting expert and provided a basis for Gasca’s lay belief that the letters were
    from Flores. The jury then had the information it needed to appropriately weigh the
    testimony. Even if the admission of the testimony were the result of an abuse of
    discretion, the error would be harmless considering the mass of evidence supporting
    Flores’s conviction and the lack of any indication that Flores’s substantial rights were
    prejudiced. E.g., Melton, 870 F.3d at 837.
    -22-
    VI.   SENTENCING
    In reviewing a district court’s sentence we “first ensure that the district court
    committed no significant procedural error.” United States v. Salazar-Aleman, 
    741 F.3d 878
    , 880 (8th Cir. 2013) (quoting United States v. Feemster, 
    572 F.3d 455
    , 461
    (8th Cir. 2009) (en banc)). “We then consider whether the sentence is substantively
    reasonable.” 
    Id.
     “Regardless of whether the final sentence is inside or outside the
    Guidelines range, we review a defendant’s sentence under a deferential abuse-of-
    discretion standard.” United States v. Boykin, 
    850 F.3d 985
    , 988 (8th Cir. 2017)
    (citing United States v. Goodale, 
    738 F.3d 917
    , 924 (8th Cir. 2013)).
    A. Flores
    Flores argues that his sentence is substantively unreasonable because the court
    attributed improper amounts of methamphetamine to him, denied his motion for
    downward departure, and failed to properly consider his history and character. At
    sentencing, the court informed the parties that it considered every factor under 
    18 U.S.C. § 3553
    (a). Based on the evidence at trial, the court calculated that Flores
    “should be held accountable for 2,265.9 grams of ice methamphetamine, resulting in
    a score of 36.” The court then found obstruction of justice because Flores tried to
    influence the testimony of a witness and he used a false name and birth certificate in
    an attempt to confuse law enforcement. This resulted in a two-level upward
    adjustment to 38. Flores had a criminal history of I. The Guideline range for the
    offense was 235 to 293 months. The court sentenced Flores to the statutory
    maximum of 240 months, a sentence near the low end of the Guideline range. In
    explaining the sentence the court noted Flores’s substantial criminal behavior even
    while under court supervision and his high risk to recidivate.
    -23-
    The sentence is within the correctly-calculated Guideline range. Nothing in the
    record supports a finding that the sentence is substantively unreasonable. The court
    did not abuse its discretion in sentencing Flores to 240 months’ incarceration.
    B. Castellanos
    Castellanos challenges her 240-month sentence on three grounds. She first
    asserts that the court attributed too much methamphetamine to her. She also contends
    that the court miscalculated her criminal history score. Finally, she argues that the
    court erred by failing to apply a two-level decrease to her offense, pursuant to
    U.S.S.G. § 3B1.2, as a minor participant.
    At sentencing the district court heard arguments regarding the evidence relating
    to the amount of methamphetamine attributable to Castellanos, including evidence
    that Castellanos had delivered five pounds of methamphetamine on one occasion.
    The record supports the court’s conclusion that Castellanos be held accountable for
    over 4.5 kilograms of methamphetamine (“ice”), specifically 4,819.5 grams, putting
    the base offense level at 38. The record supports the court’s decision that Castellanos
    did not meet her burden of proof for the two-level reduction for minor role in a
    conspiracy. The court further noted that the calculation of 240 months would be the
    same even with the reduction. The court also did not err in calculating Castellanos’s
    criminal history score by including two prior felony convictions for driving while
    barred. See United States v. Philips, 
    633 F.3d 1147
    , 1148 (8th Cir. 2011) (per
    curiam). The statutory maximum of 240 months is well below the Guideline range of
    292 to 365 months. Nothing in the record supports a conclusion that the sentence is
    substantively unreasonable. The court did not abuse its discretion in sentencing
    Castellanos to 240 months’ incarceration.
    -24-
    VII. CONCLUSION
    We affirm the judgments of the district court.
    ______________________________
    -25-