United States v. Ronald Howard Merker , 334 F. App'x 953 ( 2009 )


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  •                                                            [DO NOT PUBLISH]
    IN THE UNITED STATES COURT OF APPEALS
    FILED
    FOR THE ELEVENTH CIRCUIT U.S. COURT OF APPEALS
    ________________________ ELEVENTH CIRCUIT
    JUNE 19, 2009
    No. 08-13200                 THOMAS K. KAHN
    Non-Argument Calendar                CLERK
    ________________________
    D. C. Docket No. 07-20636-CR-RWG
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    versus
    RONALD HOWARD MERKER,
    Defendant-Appellant.
    ________________________
    Appeal from the United States District Court
    for the Southern District of Florida
    _________________________
    (June 19, 2009)
    Before DUBINA, Chief Judge, TJOFLAT and HULL, Circuit Judges.
    PER CURIAM:
    This appeal arises out of a scheme to smuggle aliens through the Miami
    International Airport (“the Airport”). Ronald Howard Merker (“Merker”), a
    former Customs and Border Protection (“CBP”) agent at the Airport, appeals his
    convictions and sentences for bribery, 18 U.S.C. § 201(b)(2)(C), conspiracy to
    commit an offense against the United States for financial gain, 18 U.S.C. § 371
    and 8 U.S.C. § 1324(a)(2)(B)(ii), and bringing aliens into the United States for
    financial gain, 8 U.S.C. § 1324(a)(2)(B)(ii). After review, we find no reversible
    error and affirm.
    I. Factual Background
    On September 26, 2007, federal authorities charged Merker
    and co-defendants Clodoaldo Ribeiro-Albequerque (“Ribeiro”), Sidney Herberth
    Sathler (“Sathler”), and Alair Campos (“Campos”) with engaging in an alien
    smuggling and bribery scheme.
    The government’s theory of the case was this. Ribeiro would arrange to
    have the illegal aliens brought to the Airport. Once they got there, Ribeiro would
    direct them to Merker’s booth. Merker would then pass them through customs in
    violation of internal operating procedures and federal law. At times, Ribeiro relied
    on others—Campos and Sathler—to help him steer aliens through Merker’s
    security line. The aliens would pay Ribeiro who would in turn pay Merker.
    Merker was charged with (1) one count of bribery, 18 U.S.C.
    2
    § 201(b)(2)(C); (2) one count of conspiracy to commit an offense against the
    United States by bringing aliens into the country for financial gain during the time
    period of October 31, 2005 to July 25, 2007, 18 U.S.C. § 371 and 8 U.S.C.
    § 1324(a)(2)(B)(ii); and (3) five counts of bringing aliens into the United States for
    financial gain, 8 U.S.C. §§ 1324(a)(2)(B)(ii) and 2. He was charged with
    smuggling the following five aliens into the country on specific dates: (1) Solange
    Duarte on October 31, 2005; (2) Agnaldo Duarte on February 1, 2006; (3) Daniele
    Watanabe on July 7, 2007; (4) Daniele Mascarenhas on July 25, 2007; and (5)
    Rosewelt Oliveira on July 25, 2007.
    Co-defendants Ribeiro, Sathler, and Campos pled guilty to the conspiracy
    count of the superseding indictment. Only Merker went to trial. The jury
    convicted Merker on all seven counts.
    A. The Government’s Case-in-Chief
    The government put forth a number of witnesses and a wealth of evidence.
    First, Jose Castellanos, a Chief with CBP, testified about CBP passenger screening
    procedures at the Airport. Castellanos testified that, generally, CBP officers
    stationed in booths at the Airport’s Passport Control section screen individuals as
    they arrive from international flights.
    During initial inspections, CBP officers fingerprint and photograph all
    3
    nonimmigrants who have visas. Each CBP officer carries an admission stamp that
    contains a specific number. After this “primary” screening, a reviewing officer
    either admits the person or refers her to “secondary” for additional screening.
    Officers are required to refer passengers to secondary if they believe that the
    passenger is using fraudulent identification documents, is being evasive, or if the
    computer records check reveals a problem.
    Castellanos noted that during both initial and secondary screening, CBP
    relies on the Treasury Enforcement Communication (“TEC”) system to check
    records. This system shows whether a passenger has a criminal record or has
    overstayed a visa. The TEC’s Advanced Passenger Information System (“APIS”)
    also provides flight information about the passengers. Officers are barred from
    accessing these records for non-work reasons.
    Cheryl Joann Arnold Castellanos, a CBP enforcement officer, testified about
    computer records obtained from the TEC system. These records listed work
    schedules and booth assignments for the four specific dates that the five aliens
    listed in the indictment entered through Merker’s booth, (October 31, 2005,
    February 1, 2006, July 7, 2007, and July 25, 2007), and contained information
    about aliens processed on those days.
    According to Cheryl Castellanos, the TEC records showed that Merker was
    4
    assigned to Booth 8 on the four dates in question and that he processed Solange
    Duarte, Daniele Watanabe, Rosewelt Oliveira, and Daniele Mascarenhas on those
    dates. APIS records for February 1, 2006, revealed that co-defendant Campos and
    Agnaldo Duarte traveled from Brazil to the United States and arrived during
    Merker’s shift.
    On cross-examination, Cheryl Castellanos testified that Merker often worked
    the night shift, had done so for several years, and that he requested the shift. She
    described him as experienced and noted that he often worked in secondary. She
    also claimed that Merker was a senior officer and that he knew that passengers
    with temporary stamps, which indicated that they were in the process of becoming
    legal permanent residents, had to be sent to secondary.
    The smuggled aliens also testified. Daniele Mascarenhas, a Brazilian
    citizen, testified that she entered the United States through the Airport on July 25,
    2007 and that Merker was the inspector who admitted her. Because Mascarenhas
    previously had overstayed an American visa in 2000, she knew that reentry into the
    United States would be difficult. So, in 2006, she met Ribeiro in Brazil. Ribeiro
    told her that he had a friend who worked for immigration and promised that he
    could smuggle her in for a $2,000 fee. Mascarenhas accepted Ribeiro’s offer and
    paid him. On July 25, 2007, she flew to the United States through Miami with
    5
    Ribeiro and another man. With Ribeiro by her side, Merker processed her through
    customs. Although Merker examined her passport, he asked her no questions and
    admitted her. On cross-examination, Mascarenhas admitted that nothing in her
    passport suggested that Mascarenhas overstayed her visa and that she might have
    been admitted without paying Ribeiro.
    Rosewelt Oliveira, a Brazilian citizen, testified that he came to the United
    States on an H1 visa in October 1999. He violated the terms of his visa by
    changing jobs and subsequently returned to Brazil. Years later, he decided to
    return to the United States with his children. He met with Ribeiro, who offered to
    get him an adulterated passport to assist his illegal entry into the United States for
    $12,000. Ribeiro told Oliveira to mail his passport to Oliveira’s son who was
    living in the United States. Oliveira sent the passport, and it was returned to him
    by mail, but with an additional stamp.
    On July 25, 2007, Ribeiro, Oliveira, and another woman (presumably
    Mascarenhas) traveled to the United States by plane. Once they arrived, Ribeiro
    and Oliveira went through customs. Oliveira testified that during inspections he
    stood in line directly behind Ribeiro. Both men went through Merker’s booth.
    Merker examined Oliveira’s newly adulterated passport and allowed him to
    proceed.
    6
    Thomas Cason, a Special Agent with ICE, also testified. Cason explained
    that an ADIT stamp shows that an alien has permanent resident status and includes
    the individual’s alien number (or “A number”). The government showed Cason a
    copy of the ADIT stamp from Rosewelt Oliveira’s passport. Cason testified that
    the A number on the stamp was incorrectly formatted and had too many digits.
    Matthew Couch, a Special Agent with Immigration and Customs
    Enforcement (“ICE”), testified that ICE suspected Ribeiro of alien smuggling and
    that Couch assisted with the investigation. According to Couch, immigration
    officials deported Ribeiro after an October 2001 drug conviction. Couch also
    stated that Ribeiro obtained a fraudulent passport under the name “Johnny Rivera.”
    Shane Glassing, a Special Agent with the Department of Homeland
    Security’s Office of the Inspector General, echoed Couch’s testimony. Glassing
    added that on July 25, 2007, Ribeiro, Mascarenhas, and Rosewelt Oliveira entered
    the United States through Merker’s inspection line. Glassing noted that Rosewelt
    Oliveira’s passport stamp indicated that he was in the process of becoming a legal
    permanent resident, and therefore, should have been sent to secondary. Instead,
    Merker admitted him.
    The government entered phone records into evidence of all calls made to and
    from Merker’s cellular phone between November 2005 and September 2007. Two
    7
    of the numbers were registered to Jose Neto—another of Ribeiro’s aliases.
    Merker’s and Ribeiro’s phones connected 968 times during the four dates in the
    indictment. Merker contacted Ribeiro 793 times; Ribeiro contacted Merker 175
    times. But none of the calls was recorded.
    Co-defendant Campos testified that he and Ribeiro agreed to smuggle aliens
    into the United States on four different occasions. According to Campos, Ribeiro
    said that he knew an immigration officer who would help with the scheme.
    Campos would accompany the alien from Brazil to the United States. When the
    flight arrived, Campos would call Ribeiro. Ribeiro would tell Campos which line
    led to Merker’s booth. Campos then would guide the alien through the line.
    Campos admitted that he never saw Merker outside of the Airport or spoke to him
    on the phone. Campos earned $1,000 for every alien he helped smuggle. Campos
    admitted that he helped smuggle Agnaldo and Solange Duarte through Merker’s
    booth.
    Selma Oliveira, a Brazilian citizen, testified that Ribeiro, Merker, and
    Campos helped smuggle her into the United States from Brazil. Selma Oliveira
    met with Ribeiro in Brazil. Because she had previously overstayed an American
    visa, she thought she needed Ribeiro’s help. Ribeiro guaranteed
    admission—provided that she could secure a seat on a particular incoming flight.
    8
    Ribeiro emphasized that the flight he selected was important, and he instructed her
    to cancel the flight if it was substantially delayed since “the guy who was working
    the booth would be leaving in the morning.” Ribeiro also recommended that
    Oliveira use her sister’s passport since the two looked alike.
    On February 1, 2006, Selma Oliveira arrived at the Airport, met Campos,
    and followed him through Merker’s line. Merker said nothing to her, took no
    fingerprints, and processed her quickly. She paid Ribeiro $5,000 for his services.
    She later asked Ribeiro to smuggle in her son for $2,500. Again, Ribeiro
    delivered.
    Solange Duarte, another Brazilian citizen, testified that she entered the
    United States on October 31, 2005 and identified Merker as the customs officer
    who admitted her. Solange Duarte said that her application for a visa to the United
    States was denied. In response, her brother, Agnaldo Duarte, contacted Ribeiro.
    Ribeiro met with Solange Duarte and guaranteed her admission to the United
    States “[b]ecause the guy from immigration was going to go ahead and invent the
    story and then bought off [sic].” Ribeiro told her that Campos would escort her
    through immigration screening.
    Solange Duarte gave her passport to Ribeiro. He adulterated it by adding
    pages and stamps to make it look like she was a legal permanent resident. Once
    9
    Solange Duarte arrived, she was processed through Merker’s line, showed Merker
    the passport, and was admitted.
    Solange Duarte’s brother, Agnaldo Duarte, testified that he entered the
    United States on February 1, 2006. He stated that Ribeiro was reputed to have the
    power to get people into the United States. Agnaldo Duarte paid Ribeiro $20,000
    to smuggle him and his sister into the United States. Ribeiro “guaranteed 100
    percent” that his efforts would succeed because “he had someone from
    immigration who would facilitate [Duarte’s] entrance.”
    Agnaldo Duarte testified that he traveled to the United States with Selma
    Oliveira, Campos, and Campos’s aunt Luzia. When they arrived at the Airport,
    Campos instructed them to use Merker’s line. Merker examined Agnaldo Duarte’s
    passport and admitted the others.
    Co-defendant Sathler, who also worked for Ribeiro’s construction company,
    described the scope of his agreement with Ribeiro to smuggle aliens into the
    United States. The strategy was to smuggle aliens who had overstayed their visas,
    to adulterate passports using a fake stamp, and to rely on Ribeiro’s
    contact—Merker—to process the aliens through customs.
    Sathler indicated that Ribeiro set up a meeting with Merker on a street
    corner near Merker’s apartment. Sathler testified that Ribeiro told him to
    10
    remember Merker’s face since the scheme required processing people through
    Merker’s line. Sathler testified that he personally escorted aliens on about fifteen
    flights from Brazil to the United States. Twelve of the smuggling attempts
    succeeded and three failed. According to Sathler, the three failures were triggered
    by problems in Brazil—not hangups at the Airport. Once the flights reached the
    Airport, Sathler sent the aliens through Merker’s line (while Sathler went through
    another line to avoid suspicion).
    Sathler testified that, on one occasion, Ribeiro gave him a fake immigration
    stamp. Sathler said that he used that stamp to mark Rosewelt Oiveira’s passport
    after Oliveira’s son delivered it to him. Sathler stamped the passport and sent it
    back to Oliveira’s son. Sathler explained that he used the stamp to trick Brazilian
    officials into authorizing aliens to travel to the United States and that the stamp
    required an official security ink that Ribeiro provided.
    Sathler testified about his and Merker’s role in the July 7, 2007 smuggling
    attempt. On that day, Sathler, Ribeiro, and Merker attempted to smuggle Giomar
    Martin DeMelo and Daniele Watanabe into the United States. Sathler recounted
    that DeMelo and Watanabe’s flight landed at the Airport at 4:30 a.m. After they
    arrived, Sathler told Watanabe and DeMelo that Sathler would go through one
    immigration line while Watanabe and DeMelo were to enter the line immediately
    11
    to his right. Once Merker emerged from Booth 8, Sathler pointed at Merker and
    told Watanabe to go to Merker’s line. Instead of proceeding to Booth 8 (Merker’s
    booth) with Watanabe, DeMelo followed Sathler to Booth 9. Sathler gestured to
    DeMelo that he should enter Merker’s booth. DeMelo went through Booth 7
    instead. Watanabe, who was processed through Merker’s booth, was admitted.
    DeMelo was not.1 The government played a videotape of the incident at trial.
    Rey Rodriguez, a special agent with the DHS Office of the Inspector
    General, testified that Merker improperly accessed computer records known as
    terminal playbacks. These records showed what types of computer searches
    Merker conducted on the relevant nights.2 Rodriguez testified that on July 7, 2007,
    Merker made unauthorized searches for “lookouts” on an incoming flight from Rio
    de Janeiro. A “lookout” from the National Crime Information Center indicates that
    a passenger has a criminal history or an outstanding warrant. The results showed a
    primary lookout on DeMelo for human smuggling and trafficking and a flag
    1
    Sathler also made comments that may have benefitted the defense. For example, his
    memories were hazy on exactly when Ribeiro told Sathler to remember Merker’s face, and he
    did not know whether Ribeiro was speaking Portugese at the time. Sathler also testified that
    Ribeiro said that he was connected to an official even higher up than Merker. Further, Sathler
    stated that Ribeiro was a “liar” and a “braggart.” But whether Sathler was telling the truth was
    an issue for the jury to decide.
    2
    Although Rodriguez testified that Merker conducted a search for Johnny Rivera, one of
    Ribeiro’s known aliases, there was also evidence suggesting that there was a “lookout” for
    another Johnny Rivera.
    12
    requiring DeMelo to report to secondary on arrival. Two hours after his first
    search, Merker searched DeMelo’s records again to check whether anyone had
    processed him through immigration. After the search, Merker called Ribeiro nine
    times throughout the morning—at 5:12 a.m., 5:14 a.m., 8:14 a.m., 8:16 a.m., 8:17
    a.m., 8:19 a.m., 8:21 a.m., 8:22 a.m., and 11:16 p.m.. But another officer
    eventually processed DeMelo—not Merker.
    B. The Defense
    On appeal, Merker argues that his defense was hampered by constant
    objections to his questions and interruptions by the district court. Therefore, we
    recount relevant portions of the defense testimony.
    The defense first called Leonel Aguilar, who was a CBP supervisor from
    March 1997 until March 2007. Aguilar testified that he directly supervised Merker
    on a number of occasions, that between 8 and 12 CBP officers typically worked the
    night shift, and that Merker was trained in both primary and secondary screening.
    Shortly after this testimony, the government initiated a series of objections
    to defense counsel’s questions. The district court sustained nearly all of them. For
    example, the government objected to defense counsel asking Aguilar whether
    Merker was required to send all passengers to secondary. The district court
    sustained the objection on the ground that Aguilar’s testimony could address only
    13
    the conspiracy’s time frame. The government also objected to defense counsel
    asking Aguilar how frequently Merker worked in secondary. The district court
    overruled the objection, but cautioned defense counsel to “zero in on the night in
    question.”
    Aguilar testified that CBP authorized experienced officers to perform
    secondary screens at their booths (rather than sending passengers to the secondary
    area). In 2003, CBP required officers to personally escort passengers to secondary.
    The government objected that Aguilar’s testimony about general airport procedures
    was irrelevant. The district court sustained the objection and stated that defense
    counsel “need[ed] to get the point.”
    Aguilar noted that passengers with ADIT stamps in their passports were,
    generally, referred to secondary. But if the staff was shorthanded on a particular
    night, experienced officers were authorized to question passengers with ADIT
    stamps at their own booths. Defense counsel showed Aguilar one of the
    adulterated passports with an ADIT stamp. Aguilar observed that the A number on
    the stamp had too many digits, but said that he would not have noticed the problem
    during a quick inspection.
    Aguilar then explained how ADIT stamps are affixed on passports. The
    government, again, objected on relevance grounds, and the district court sustained
    14
    the objection. Just as Aguilar was explaining how it was not unusual to see an
    “SRC” number on a passport, the government objected again. The district court
    told Aguilar, “Sir, we’re really not interested in what the officers do,” and
    instructed him to confine his testimony to the particular document before him.
    Aguilar claimed that in 2003 or 2004, CBP started using fingerprint
    machines. This prompted the district court to remark, “we’re off the chart again.”
    Defense counsel explained that the testimony was relevant since government
    witnesses testified that Merker often failed to take passenger fingerprints. The
    court stated, “Well, he wasn’t there. So there’s really not a lot of relevance here.”
    Defense counsel asked more questions about fingerprinting procedures. For
    example, defense counsel asked whether fingerprint machines ever stopped
    working. The government objected, and the district court sustained the objection.
    Defense counsel asked whether Aguilar had ever evaluated Merker’s work
    performance. The government objected, and the district court sustained the
    objection. Defense counsel asked what officers did in the downtime between the
    arrival of flights. The government objected, again on relevance grounds, and the
    district court sustained the objection. Although defense counsel requested a
    sidebar, the district court rebuffed the suggestion and insisted that defense counsel
    keep it moving.
    15
    When Aguilar testified about whether CBP officers checked incoming flight
    records every night, the district court interrupted, insisted that such testimony had
    “absolutely no relevance,” and asked Aguilar whether he knew the meaning of the
    word “relevant.” Aguilar answered affirmatively.
    Aguilar testified that CBP officers were required to process individuals
    within set time limits. The government objected. The district court sustained the
    objection and noted that “[t]his case is about certain dates certain times, and certain
    happenings, and so far we don’t have that.” Aguilar then testified that, during the
    time frame of the indictment, inspectors were required to process 45 passengers a
    minute. During the midnight shift, officers screened 2,000 to 3,000 passengers a
    night. At a sidebar, the district court instructed defense counsel to tie Aguilar’s
    testimony to the specific dates mentioned in the indictment.
    The defense called Jacob Achterberg, a former Chief with CBP who had also
    served as Merker’s supervisor. In response to a question about Merker’s duties,
    Achterberg said that Merker’s experience and professionalism rendered him a
    senior inspector. The government objected, and the district court instructed
    Achterberg to answer only the question.
    Achterberg testified that he frequently assigned Merker to work in secondary
    and that officers were not necessarily required to send all passengers with ADIT
    16
    stamps to secondary. Defense counsel asked whether an officer with Merker’s
    experience was required to send passengers with ADIT stamps to secondary. The
    government objected to this question, and the district court sustained the objection.
    However, Achterberg testified that Merker had discretion as to whether to send a
    passenger with an ADIT stamp to secondary.
    Achterberg discussed pre-September 11th procedures. The district court
    interrupted and instructed Achterberg to confine his testimony to the conspiracy’s
    time frame (which began in 2005). The district court observed that Achterberg was
    “having a great deal of difficulty with relevance.” Achterberg also testified that
    inspectors were required to administer ADIT stamps using security ink, but that ink
    shortages led to the use of other ink types. Following Achterberg’s testimony, the
    defense rested.
    At the close of the evidence, defense counsel argued that the district court
    had unduly limited the defense by requiring its witnesses to tie testimony to the
    dates listed in the indictment. The district court acknowledged the legitimacy of
    the objection, but noted that both witnesses ended up testifying about airport
    procedures.
    Defense counsel moved for a mistrial on the ground that the district court’s
    restrictions on Aguilar’s and Achterberg’s testimony “essentially limited and
    17
    hobbled the defense.” The district court denied the motion.
    The jury convicted Merker on all seven counts of the superseding
    indictment. Merker filed a written motion for a judgment of acquittal or,
    alternatively, for a new trial. The district court denied both motions.3
    C. Sentencing
    The Presentence Investigation Report (“PSI”) set Merker’s base offense
    level at 14, pursuant to U.S.S.G. § 2C1.1(a)(1), because Merker was a public
    official. The PSI recommended increasing Merker’s offense level to 28 by adding:
    (1) two levels, pursuant to U.S.S.G. § 2C1.1(b)(1), because the offense involved
    more than one bribe; (2) six levels, pursuant to U.S.S.G. § 2B1.1(b)(1)(D) and §
    2C1.1(b)(2), because Merker received payments between $30,000 and $70,000; (3)
    four levels, pursuant to U.S.S.G. § 2C1.1(b)(3), because Merker was a public
    official in a high-level decision-making or sensitive position; and (4) two levels,
    pursuant to U.S.S.G. § 2C1.1(b)(4)(A), because Merker was a public official who
    facilitated entry of a person into the United States. Merker’s total offense level of
    28 and criminal history category of I yielded an advisory guidelines range of 78 to
    97 months in prison.
    Defense counsel objected that the overlapping enhancements were
    3
    During trial, Merker had made oral motions for a judgment of acquittal, which the
    district court also denied.
    18
    impermissible “double counting,” that Merker was not a “public official in a high-
    level decision-making or sensitive position,” and that the PSI’s recommended
    sentence was substantively unreasonable (as compared to the sentences of his co-
    defendants). The district court rejected those arguments and adopted the PSI’s
    recommended advisory guidelines range. The district court imposed a 78-month
    sentence, at the low end of that range, and a $12,000 fine.
    II. Discussion
    Merker raises three types of claims on appeal—two evidentiary challenges
    and several issues relating to sentencing. We address each in turn.
    A. Merker’s Ability to Present a Defense
    Merker contends that the district court’s evidentiary rulings and trial
    “manner” violated his right to present a defense and denied him a fair trial.4
    4
    Citing his Sixth Amendment Confrontation Clause rights and his “right to present a
    defense, the right to present [his] version of the facts,” see Washington v. Texas, 
    388 U.S. 14
    ,
    19, 
    87 S. Ct. 1920
    , 1923 (1967), Merker argues that the district court improperly restricted his
    defense by constantly interrupting him and excluding relevant testimony. The government
    responds that Merker’s claim should be treated as one implicating the Fourteenth Amendment’s
    guarantee of due process and it points out that a passage in Washington v. Texas cited by Merker
    suggests as much. 
    See 388 U.S. at 19
    , 87 S. Ct. at 1923 (“The right to offer the testimony of
    witnesses, and to compel their attendance, if necessary, is in plain terms the right to present a
    defense, the right to present the defendant's version of the facts as well as the prosecution's to the
    jury so it may decide where the truth lies. Just as an accused has the right to confront the
    prosecution's witnesses for the purpose of challenging their testimony, he has the right to present
    his own witnesses to establish a defense. This right is a fundamental element of due process of
    law.”). Whether it is styled as a Fourteenth Amendment claim or one arising out some amalgam
    of the Fifth and Sixth Amendments, Merker's argument is that the district court prevented him
    from adequately defending himself.
    19
    First, Merker argues that the district court improperly restricted Achterberg
    and Aguilar’s testimony about general procedures at the Airport. The government
    had an opportunity to paint a picture of how things normally worked. And it
    argued that Merker’s behavior was inconsistent with normal CBP protocol.
    Merker claims he was denied the opportunity to counter that image. Had he been
    able to offer more evidence of CBP procedure, his behavior would have appeared
    innocuous and innocent. Second, Merker claims that the district court’s constant
    interruptions, “derogatory tone, and “implicit disapproval” of Merker’ arguments
    denied him a fair trial.
    We reject Merker’s arguments for a number of reasons.5 First, the district
    court did not abuse its discretion in excluding certain testimony that was
    untethered to the time frame of the conspiracy and irrelevant. See Fed. R. Evid.
    401, 403. For example, defense witnesses did not know whether the fingerprint
    5
    We review evidentiary rulings for abuse of discretion. United States v. Anderson, 
    872 F.2d 1508
    , 1515 (11th Cir. 1989). Even if the district court committed "constitutional error," we
    will not reverse errors that are "harmless." See United States v. Candelario, 
    240 F.3d 1300
    , 1307
    (11th Cir. 2001). “Under the harmless-error standard articulated in Chapman and its progeny, a
    conviction may be affirmed only if the reviewing court conclude[s] that, on the whole record, the
    error was harmless beyond a reasonable doubt[.] Put differently, the reviewing court must
    consider whether there is a reasonable possibility that the evidence complained of might have
    contributed to the conviction.” LaMarca v. Sec'y, Dep't of Corrs., — F.3d —, 
    2009 WL 1377235
    , at *11 (11th Cir. May 19, 2009) (citations and quotation marks omitted). “[A]
    non-constitutional error is harmless if, viewing the proceedings in their entirety, a court
    determines that the error did not affect the verdict, or had but very slight effect.” United States
    v. Arias, 
    431 F.3d 1327
    , 1338 (11th Cir. 2005).
    20
    machines were malfunctioning on the dates listed in the indictment. At one point,
    Achterberg offered testimony about pre-September 11, 2001 procedures, even
    though the conspiracy began in 2005. Such testimony was properly excluded.
    That the district court did not abuse its discretion in excluding such
    testimony undermines Merker’s argument that he was denied the right to present a
    defense. Defendants do not have “an unfettered right” to offer irrelevant
    testimony. See Taylor v. Illinois, 
    484 U.S. 400
    , 410, 
    108 S. Ct. 646
    , 653 (1988).
    Second, Merker was given ample opportunity to present a robust defense.
    For starters, the district court allowed him to present evidence of CBP procedures
    (that inspectors were forced to process a large volume of individuals quickly, that
    they had discretion over when to send individuals to secondary, that Merker was an
    experienced inspector, that the adulterated passports were not obvious forgeries,
    etc.).6 Aguilar and Achterberg provided much of that information. Admittedly,
    portions of their testimony were punctured by a number of objections, but this was
    not true for all of their testimony. For example, the district court overruled the
    government’s objection and allowed Aguilar to testify that in some cases an
    6
    Merker outlines four things that his witnesses were unable to prove as a result of the
    district court’s interruptions: (1) Merker was an experienced, senior inspector; (2) Merker was
    not required to send passengers with ADIT stamps to secondary; (3) Merker was permitted to
    perform secondary work in his booth; and (4) manpower shortages forced inspectors to process
    people quickly. But Aguilar and other witnesses testified as to all of these facts. Defense
    counsel relied on many of these arguments during closing.
    21
    inspector does not have to refer an individual to secondary. The jury also heard
    that Merker was experienced and had the discretion to perform secondary
    inspections at his booth. Defense counsel had the opportunity to build on this
    evidence of CBP procedures to counter the government’s depiction of how the
    CBP worked. Indeed, defense counsel relied on this evidence during closing
    argument.
    Furthermore, the record does not support the suggestion that the district
    court impermissibly commented on the quality of the evidence, the credibility of
    the witnesses, or displayed a bias against Merker such that it impeded his ability to
    present a defense. See United States v. Verbitskaya, 
    406 F.3d 1324
    , 1337 (11th
    Cir. 2005) (“[I]n order to amount to reversible error, a judge’s remarks must
    demonstrate such pervasive bias and unfairness that they prejudice one of the
    parties in the case.”(alteration in original)) (quotation marks and citation omitted).
    To the extent that the district court “constantly” interrupted defense counsel, such
    interruptions were prompted by defense counsel’s desire to consistently run afoul
    of the district court’s evidentiary rulings.
    Third, the sheer volume of record evidence showing Merker’s guilt
    persuades us that any error was “harmless.” The government presented a vast
    array of testimony and documentary evidence showing that Merker was guilty
    22
    beyond any reasonable doubt. We recounted the evidence above in great detail. In
    short, the government presented evidence about Merker’s active involvement in the
    conspiracy on the critical dates in question. We are persuaded that there is no
    reasonable possibility that the alleged errors might have contributed to the
    convictions.
    Lastly, Merker had the opportunity to cross-examine witnesses and to
    challenge the evidence against him. In short, the district court committed no
    reversible error.
    B. Co-Conspirator Evidence
    Merker argues that the district court erred by admitting Ribeiro’s out-of-
    court statements. While Ribeiro’s out-of-court statements were hearsay, there is an
    exception for such a hearsay statement if it is “offered against a party and is . . . a
    hearsay statement by a coconspirator of a party during the course and in
    furtherance of the conspiracy.” Fed. R. Evid. 801(d)(2)(E).7
    To fall within the co-conspirator hearsay exception, “the government must
    prove by a preponderance of the evidence that (1) a conspiracy existed, (2) the
    conspiracy included the declarant and the defendant against whom the statement is
    7
    We review evidentiary rulings for abuse of discretion. 
    Underwood, 446 F.3d at 1345-46
    . And we apply “a liberal standard in determining whether a statement is made in
    furtherance of a conspiracy.” United States v. Miles, 
    290 F.3d 1341
    , 1351 (11th Cir. 2002)
    (quotation marks omitted).
    23
    offered, and (3) the statement was made during the course of and in furtherance of
    the conspiracy.” United States v. Underwood, 
    446 F.3d 1340
    , 1345-46 (11th Cir.
    2006). The district court may consider the hearsay statements themselves when
    making this determination. Bourjaily v. United States, 
    483 U.S. 171
    , 181, 
    107 S. Ct. 2775
    , 2781 (1987).
    Merker argues that the only evidence showing his involvement in the
    conspiracy was the actual hearsay evidence itself—Ribeiro’s statements.
    Therefore, the district court’s reliance on only that evidence to prove its
    admissibility constituted impermissible “bootstrapping.” The United States
    Supreme Court has never explicitly determined whether a district court can rely
    exclusively on the hearsay statements themselves for the purpose of determining
    their admissibility under Rule 801(d)(2)(E). See 
    Bourjaily, 483 U.S. at 181
    , 107 S.
    Ct. 1281 (“We need not decide in this case whether the courts below could have
    relied solely upon Lonardo's hearsay statements to determine that a conspiracy had
    been established by a preponderance of the evidence.”); 
    id. at 184,
    107 S. Ct. at
    2783 (Stevens, J., concurring) (“An otherwise inadmissible hearsay statement
    cannot provide the sole evidentiary support for its own admissibility—it cannot lift
    itself into admissibility entirely by tugging on its own bootstraps.”).
    There is no need for us to address the issue of impermissible bootstrapping
    24
    here because ample evidence, unrelated to Ribeiro’s out-of-court statements, shows
    that Merker was a member of the conspiracy. First, six witnesses (Solange Duarte,
    Agnaldo Duarte, Daniele Watanabe, Daniele Mascarenhas, Selma Oliveira, and
    Rosewelt Oliveira), testified that they were admitted to the United States illegally
    through Merker’s booth. Co-defendant Campos testified that he personally
    escorted three illegal aliens, Solange Duarte, Agnaldo Duarte, and Selma Oliveira,
    and directed all three of them to enter Merker’s line.
    Co-defendant Sathler testified that he escorted Watanabe through Merker’s
    line and that Watanabe was admitted. Sathler also explained that DeMelo’s failure
    to enter Merker’s booth doomed his admission to the United States.8 Sathler
    testified that he had participated in fifteen smuggling attempts and directed aliens
    to enter through Merker’s booth on every occasion.
    Further, cell phone records showed that Merker and Ribeiro contacted each
    other 968 times between May 15, 2006 and August 17, 2007. This evidence
    combined with the evidence of frequent short calls on dates such as July 7, 2007
    (the date Watanabe was smuggled in) and on July 25, 2007 (when Daniele
    Mascarenhas and Rosewelt Oliveira were smuggled in) supported the admission of
    Ribeiro’s statements.
    8
    Plus, computer record evidence showed that Merker searched for DeMelo’s name prior
    to his arrival.
    25
    Therefore, there was independent, sufficient evidence showing (1) that a
    conspiracy existed, (2) that Merker and Ribeiro were involved in the conspiracy,
    and (3) that Ribeiro’s statements were made in furtherance of the conspiracy.
    Accordingly, the district court did not err in admitting Ribeiro’s out-of-court
    statements.
    C. Sentencing Issues
    Merker raises three challenges to his sentence.9
    First, Merker argues that the district court erred by increasing his offense
    level under the guidelines for being a “public official in a high-level decision-
    making or sensitive position,” pursuant to § 2C1.1(b)(3) (authorizing a four-level
    increase). However, Merker easily falls under this label. Merker held “a position
    characterized by a direct authority to make decisions for, or on behalf of, a
    government department, agency, or other government entity, or by a substantial
    influence over the decision-making process.” U.S.S.G. § 2C1.1 cmt. n.4. The
    application notes list “agency administrator” and “law enforcement officer” as
    9
    We review de novo a district court’s interpretation and application of the Sentencing
    Guidelines. United States v. Louis, 
    559 F.3d 1220
    , 1224 (11th Cir.), cert. denied, — S. Ct. —,
    
    2009 WL 1146748
    (U.S. May 26, 2009) (No. 08-10013); United States v. Miranda, 
    348 F.3d 1322
    , 1330 (11th Cir. 2003). We review de novo a claim that the district court double-counted a
    sentencing factor. United States v. Dudley, 
    463 F.3d 1221
    , 1226 (11th Cir. 2006). And “[w]e
    review the district court's findings of fact related to the imposition of sentencing enhancements .
    . . for clear error.” United States v. Clarke, 
    562 F.3d 1158
    , 1165 (11th Cir. 2009). “Under this
    standard, we will not disturb a district court's findings unless we are left with a definite and firm
    conviction that a mistake has been committed.” 
    Id. (quotation marks
    and citation omitted).
    26
    examples of the types of officials who fall under this broad category. Merker not
    only had substantial influence over whether an individual could enter the United
    States but also had law enforcement duties. Indeed, CBP officers carried weapons
    and had arrest powers. Further, CBP officers had “direct authority” to decide
    whether to admit an alien or to require them to produce additional documentation.
    Therefore, the district court did not err in classifying Merker as a “public official in
    a high-level decision-making or sensitive position.”
    Second, Merker argues that the district court engaged in impermissible
    double counting when it “repeatedly increased Merker’s base [offense] level under
    U.S.S.G. § 2C1.1.” Merker contends that the district court was wrong to treat him
    as both a “public official in a high-level decision-making or sensitive position,”
    U.S.S.G. § 2C1.1(b)(3), and a “public official who facilitated . . . entry into the
    United States for a person,” U.S.S.G. § 2C1.1(b)(4)(A).
    “‘Impermissible double counting occurs only when one part of the
    Guidelines is applied to increase a defendant’s punishment on account of a kind of
    harm that has already been fully accounted for by application of another part of the
    Guidelines.’” United States v. Dudley, 
    463 F.3d 1221
    , 1226-27 (11th Cir. 2006)
    (quoting United States v. Matos-Rodriguez, 
    188 F.3d 1300
    , 1309 (11th Cir. 1999)).
    Unless the guidelines direct otherwise, this Court presumes “that the Sentencing
    27
    Commission intended for separate guideline sections to apply cumulatively.” 
    Id. at 1227.
    “‘Double counting a factor during sentencing is permitted if the
    Sentencing Commission . . . intended that result and each guideline section in
    question concerns conceptually separate notions relating to sentencing.’” 
    Id. (quoting United
    States v, Stevenson, 
    68 F.3d 1292
    , 1294 (11th Cir. 1995)).
    Further, “[t]he offense level adjustments from more than one specific offense
    characteristic within an offense guideline are applied cumulatively (added
    together) unless the guideline specifies that only the greater (or greatest) is to be
    used.” U.S.S.G. § 1B1.1 cmt. n.4(a).
    The district court did not engage in impermissible double-counting because
    Merker’s enhancement under § 2C1.1(b)(4)(A) was not fully accounted for in his
    enhancement under § 2C1.1(b)(3). The “public official in a high-level decision-
    making or sensitive position” enhancement, § 2C1.1(b)(3), generally speaking,
    applies to public servants with direct authority to make important governmental
    decisions. Notably, this enhancement is not tied to whether an individual admits a
    person into the United States, and no part of the applicable guidelines uproots our
    normal presumption that enhancements are cumulative.
    In contrast, the enhancement for an official who facilitates “entry into the
    United States for a person” addresses the dangers caused by illegally admitting
    28
    persons into the United States. U.S.S.G. § 2C1.1(b)(4)(A). The concerns
    addressed by this enhancement are not “fully accounted” for, see 
    Matos-Rodriguez, 188 F.3d at 1309
    , by applying the § 2C1.1(b)(3) enhancement. Indeed, §
    2C1.1(b)(3) applies even if an official denies an alien’s entry into the United
    States, in exchange for bribes; whereas § 2C1.1(b)(3) would not. Because the
    different enhancements address different aspects of Merker’s crimes, we find no
    error in the district court’s application of both enhancements.
    Third, Merker argues that his sentence was unreasonable because (1)
    “virtually” the only factor that the district court addressed when imposing the
    sentence was Merker’s role as an immigration inspector and (2) his sentence was
    three times as long as Ribeiro’s sentence.
    We review the substantive reasonableness of the sentence for an abuse of
    discretion. Gall v. United States, 
    552 U.S. 38
    , 
    128 S. Ct. 586
    , 597 (2007). A
    defendant challenging his sentence bears the burden of establishing that it is
    unreasonable. United States v. Talley, 
    431 F.3d 784
    , 788 (11th Cir. 2005). The
    record does not support Merker’s contention that the district court considered only
    one of the factors listed in 18 U.S.C. § 3553(a). The district court examined all of
    the relevant § 3553(a) factors, correctly calculated the guidelines range, and
    arrived at a reasonable sentence at the low end of the guidelines range. Any
    29
    disparity between Merker’s and Ribeiro’s sentences can be attributed to the
    seriousness of Merker’s crime, his breach of the public trust, and the fact that
    Ribeiro pled guilty. Merker has failed to carry his burden to show that his sentence
    was unreasonable. Therefore, we AFFIRM Merker’s convictions and sentence.
    AFFIRMED.
    30