United States v. Akpan ( 2005 )


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  •                                                          United States Court of Appeals
    Fifth Circuit
    F I L E D
    REVISED APRIL 29, 2005
    IN THE UNITED STATES COURT OF APPEALS          April 14, 2005
    FOR THE FIFTH CIRCUIT
    Charles R. Fulbruge III
    Clerk
    No. 03-20875
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    versus
    ERNEST NDA AKPAN; CHIJIOKE VICTOR
    OKORO, MD, also known as Victor
    Okoro, also known as Chiji V.
    Okoro
    Defendants-Appellants.
    --------------------
    Appeal from the United States District Court
    for the Southern District of Texas
    (H-01-CR-399-2)
    --------------------
    Before WIENER and PRADO, Circuit Judges, and LITTLE,* District
    Judge.
    WIENER, Circuit Judge:
    Defendant-Appellant Ernest Nda Akpan appeals his conviction
    and sentence after a jury trial for mail fraud in violation of 18
    U.S.C. § 1341.    Defendant-Appellant Chijioke Victor Okoro appeals
    his conviction and sentence after a jury trial for fifteen counts
    of mail fraud in violation of 18 U.S.C. § 1341, three counts of
    filing false tax returns in violation of 26 U.S.C. § 7206(1), and
    *
    District Judge of the Western District of Louisiana, sitting
    by designation.
    seven counts of healthcare fraud in violation of 18 U.S.C. § 1347.
    Finding no error in the district court’s rulings or the jury trial,
    we affirm Akpan’s and Okoro’s convictions.                   We also affirm Akpan’s
    sentence, but, in light of the Supreme Court’s opinion in United
    States v. Booker1 and our recent opinion in United States v. Mares,2
    we vacate Okoro’s sentence and remand for resentencing.
    I.    FACTS AND PROCEEDINGS
    Doctor Okoro is a native of Nigeria who came                         to the United
    States     to   attend   college      in       the    1970s.         He    received     an
    undergraduate     degree      in   chemistry         and   graduated      from   medical
    school.    As a licensed physician, Okoro practiced medicine in the
    United States from 1981 until 2002.                  He also developed a medical
    missionary program to bring medical care to his native Nigeria.
    Between 1984 and 2000, Okoro traveled to Nigeria twice a year to
    provide medical care to impoverished Nigerians.                        In 1989, Okoro
    moved to Houston, Texas to work as an emergency room doctor at
    Memorial    Hospital     Northwest     (“Memorial”).            In     1990,     Memorial
    promoted him      to   the    Director     of    the       Emergency      Department,    a
    position that he held until his arrest. In 1999, Okoro became a
    United States citizen.
    A.     Mail Fraud
    1
    —— U.S. —— , 
    125 S. Ct. 738
    (Jan. 12, 2005).
    2
    —— F.3d ——, 
    2005 WL 503715
    (5th Cir. Mar. 4, 2005).
    2
    Okoro also worked for the Westchase Clinic (“Westchase”) until
    it closed in 1995, when he began work for Westchase’s successor,
    Spectrum Medical Clinic (“Spectrum”).              Okoro and Akpan worked
    together at both Westchase and Spectrum.             In 1996, Spectrum was
    dissolved and became Houston Medcare (“Medcare”), a minor injury
    clinic owned by Okoro.         Many of Spectrum’s employees joined Okoro
    at Medcare.        Most importantly, Okoro hired Akpan as Medcare’s
    administrator      to   work    with    lawyers    and   insurance      company
    representatives to ensure that the clinic received payment for the
    services that it rendered.             Akpan coordinated the transfer of
    patients from Spectrum to Medcare and also supervised Spectrum’s
    office staff.
    In March 1996, the Federal Bureau of Investigation (“FBI”),
    the   Internal     Revenue   Service    (“IRS”),   and   the   United    States
    Department    of    Health     and   Human   Services    (“DHHS”)    began    to
    investigate attorneys and physicians suspected of submitting false
    claims to insurance companies for non-existent medical services
    purportedly provided to victims of motor vehicle accidents.                  The
    results of the undercover investigation by FBI Special Agent
    Lorraine Tucker and Houston Police Officer Sheryl Jefferson reveals
    the fraudulent scheme alleged by the government in the indictment
    against Okoro and Akpan.
    Tucker (posing as “Lorraine Bell”) and Jefferson (posing as
    “Sheryl King”) took out insurance policies under their aliases in
    cooperation with representatives of the United Services Automobile
    3
    Association (“USAA”).3       They then filed a fictitious accident
    report that listed Jefferson as the driver.
    Tucker received a phone call on her undercover telephone from
    an individual who identified herself as Cindy Halla, allegedly a
    representative of a Christian organization called Sisters of Grace.
    Halla    informed   Tucker   that   the   Sisters   of   Grace   provided
    transportation and referrals for victims of car accidents. Halla’s
    associate, Walter Oji, picked up Tucker at her undercover apartment
    and took her to Spectrum, which was then still in operation.
    Tucker wore a hidden recording device during this first visit to
    Spectrum.    When they arrived at the clinic, a Spectrum employee
    gave Tucker some paperwork to complete.      She filled it out and gave
    it to Oji, who then gave it to the receptionist.
    Claudia Ramon, a Spectrum nurse, led Tucker to the back of the
    clinic, where Ramon recorded Tucker’s height, weight, and blood
    pressure and told her that a doctor would be in to see her shortly.
    Dr. Sunil Vachhani, a licensed chiropractor employed by Okoro,
    examined Tucker.     She informed him that her right shoulder hurt.
    Dr. Vachhani recommended that Tucker receive physical therapy, but
    she received none during her first visit.           After Dr. Vachhani
    examined Tucker, Oji took her to the law offices of Gabriel Giwa,
    whom she retained to recover payment from USAA for the injuries
    that she had received in the purported car accident.
    3
    For ease of comprehension, we refer to Tucker and Jefferson
    by their real names.
    4
    Oji again transported Tucker to Spectrum in late March 1996.
    Tucker asked Oji if she should sign in for Jefferson as well, and
    Oji informed her that she could if she wanted.         Tucker wrote both
    of their undercover names on the sign-in sheet.         Ramon led Tucker
    to an examination room, where she handed Tucker a sheet of yellow
    paper that contained multiple dates.      Ramon asked Tucker to record
    the dates in her patient file.    Tucker then signed the daily sign-
    in sheets for the month of March, as well as the daily sign-in
    sheets for all of the days listed on the yellow paper.
    Tucker told Ramon that her roommate Jefferson had been in the
    same accident but that Jefferson was out of town.              Ramon told
    Tucker that she would speak to her superior about Jefferson.          Ramon
    then introduced   Tucker   to   Akpan,   to   whom   Tucker   spoke   about
    Jefferson.   Akpan told her that “he would work something out” and
    would contact their attorney.
    In April 1996, Tucker returned to Spectrum by herself.            She
    signed in as usual, and Ramon again gave her a sheet of paper that
    contained multiple dates.       Tucker recorded the dates into her
    patient file and signed her name on the corresponding daily sign-in
    sheets.   Ramon told Tucker to bring Jefferson with her on her next
    visit.
    On May 1 and 9, 1996, Tucker returned to Spectrum with
    Jefferson.   During the May 9 visit, Tucker and Jefferson met with
    Akpan. When he asked Jefferson why she had not visited Spectrum
    earlier, she explained that she had been out of town.          Akpan told
    5
    them that he would help them but that they should not tell others,
    explaining that car accident lawsuits often settled and that
    problems arose when the lawyers distributed the settlement funds.
    Akpan also told them that patients often denied the amount of
    services that they received at the clinic to avoid payment.   Akpan
    explained that he would get his money and asked if they “were all
    together on that.”     Tucker and Jefferson assured him that they
    were.    At the close of the meeting, Ramon provided both Tucker and
    Jefferson with more sign-in sheets for multiple future dates, which
    they signed.
    Spectrum ultimately billed USAA $1550 for services rendered to
    Tucker, claiming 27 physical therapy treatments from March 20 to
    May 9, 1996.     Spectrum also billed USAA $3190 for Jefferson’s
    medical treatment, also for 27 visits between March 20 and May 9,
    1996, with multiple treatments rendered on the same day.    Okoro’s
    signature appeared on much of the paperwork, even though Okoro had
    never examined either Tucker or Jefferson. In fact, neither Tucker
    nor Jefferson had ever even met Okoro.
    The “sign-in” scheme was replicated with many of the clinic’s
    patients — Minh Nguyen, Audrey Santos, Simon Mosongo, Yolanda
    Coleman, Rebecca Whitfield, Dexter Hall, Iyomo Louison, Lora Goree,
    Halane Dunn, and Manuel Roth.         Although some of the patients
    received physical therapy treatments and some were examined by
    Okoro, each patient signed blank sign-in sheets and blank patient
    forms.    In addition, Okoro signed most of the forms himself, yet
    6
    many of the patients testified that he had never examined them, and
    the evidence at trial demonstrated that he was out of the country
    —— in Nigeria —— during many of their “visits.”
    B.     Healthcare Fraud4
    Okoro also worked with 21 other physical therapy clinics.
    Medicare issues a group number to each health care facility and an
    individual provider number to physicians within the facility.
    Physicians must complete a “reassignment of benefits” application
    to   allow   the    facility    to   bill    Medicare     for   the   physician’s
    services.       Medicare    then     reimburses     the   facility       under   the
    physician’s provider number.          The facility may bill Medicare for
    services that the physician renders only when he is present.
    Between 1998 and 2000, Okoro received individual provider
    numbers in connection with 21 physical therapy clinics.                      These
    clinics were owned by Akpan, Sekibo Williams, a foreign medical
    student who worked at Medcare, and Henry Johnson, Spectrum’s
    previous     owner.        In   total,       the   clinics      billed    Medicare
    $9,788,724.76, and Medicare paid a total amount of $4,192,544.16 to
    the clinics.       Of this amount, Okoro received $324,373.87 from the
    clinics between 1999 and 2001.
    The evidence at trial demonstrated that many of the physical
    therapy clinics billed Medicare for services that Okoro allegedly
    rendered after he deactivated his individual provider number for
    4
    Okoro does not appeal his conviction for tax fraud.
    7
    that clinic.      In addition, Okoro signed patient documents that
    stated that he had treated those patients on specific dates and at
    specific times on which Okoro could not possibly have rendered
    services.      For example, many of the dates on which Okoro alleged
    that he provided services were dates when he was in Nigeria.
    C.     Indictment and Trial
    In   May    2001,   a   federal    grand   jury    returned    a   22-count
    indictment against Okoro and Akpan.              The following February, a
    grand   jury    returned     a   25-count   second    superceding   indictment
    against Okoro, Akpan, as well as counts against Claudia Ramon,
    Guadalupe Castro, and Ana Lilia Garcia. The district court severed
    the charges against these additional defendants before trial, and
    they are not a subject of this appeal.               Counts one through 15 of
    the second superceding indictment charged Okoro with aiding and
    abetting mail fraud in violation of 18 U.S.C. §§ 1341 and 2.
    Counts 16 through 18 charged Okoro with filing false federal income
    tax returns in violation of 26 U.S.C. § 7206(1).            Counts 19 through
    25 charged Okoro with health care fraud in violation of 18 U.S.C.
    § 1347.   Count One charged Akpan with mail fraud in violation of 18
    U.S.C. § 1341.
    Trial against Okoro and Akpan began in September 2002.                After
    deliberating, the jury found Okoro guilty on all twenty-five counts
    and found Akpan guilty on Count One.            Akpan timely filed a motion
    for a new trial, which the district court denied.            In August of the
    8
    following year, the district court sentenced Akpan to 41 months in
    the custody of the Bureau of Prisons on count one.           One month
    later,    the   district   court   sentenced   Okoro   to   120   months
    imprisonment for the mail and healthcare fraud violations.          The
    district court also sentenced Okoro to a 31-month sentence for tax
    fraud to run consecutively to the 120-month sentence for mail and
    healthcare fraud.     Both Okoro and Akpan timely filed notices of
    appeal.
    II. ANALYSIS
    A.     Motion for a Mistrial
    Okoro and Akpan (collectively, “appellants”) first argue that
    the district court abused its discretion when it refused to grant
    their motion for a mistrial grounded in the court’s allowing the
    jurors to remove the government’s summary trial notebooks from the
    courtroom before trial started.         We review a district court’s
    refusal to grant a mistrial for abuse of discretion.5
    After the court empaneled the jury, it instructed the jurors:
    (1) not to seek outside information about the case; (2) not to
    discuss experiences that were not in evidence; (3) not to discuss
    the case or the evidence with anyone —— their spouse or among
    themselves —— before the district court’s final instructions; (4)
    to keep an open mind about the evidence; and (5) not to form an
    5
    United States v. Moreno, 
    185 F.3d 465
    , 475 (5th Cir. 1999).
    9
    opinion until they had heard all of the evidence.                 The district
    court then recessed for lunch.
    During the recess, the government received permission from the
    district court to place summary notebooks on each juror’s chair.
    The summary notebooks contained “key” documents of the government’s
    case against appellants.        Specifically, each notebook contained
    excerpts of government exhibits one to forty-three.                Before jury
    selection,   the     district       court     had   entertained    appellants’
    objections   to    the   exhibits    in     the   summary   notebooks   but   had
    admitted all of them.6
    After the jury returned from lunch, the court recessed for the
    day and informed the jury that opening statements would begin the
    next day.7   As the jury left the courtroom, one juror asked the
    district court if they could take the summary notebooks with them.
    The district court responded: “You can take it home or leave it
    here, it’s up to you.”      The jury then left the courtroom.
    After the jury left, the following colloquy occurred between
    Akpan’s defense counsel, Robert Fickman, and the district court:
    Fickman: Your Honor, are they allowed to take the exhibit
    notebooks home with them?
    Court: They’re copies. Why not? I let them take their
    notes home. I let them take their minds home. Why is
    that a problem?
    6
    Neither   appellant  challenges              the    district    court’s
    evidentiary rulings on the exhibits.
    7
    Doctors for Okoro’s lead counsel, Richard Haynes, had
    scheduled emergency surgery for the afternoon of September 10, 2002
    on a tumor in his hand.
    10
    Fickman: Well, I’ve never seen it before, I guess.
    The record reflects that this colloquy occurred immediately after
    the jury left the room.   Later, before the court recessed for the
    day, counsel for Akpan explicitly objected to the removal of the
    summary notebooks from the courtroom on the grounds that it (1) was
    prejudicial, (2) would encourage the jurors to discuss the evidence
    with others, and (3) would allow the jurors to deliberate before
    all evidence had been presented.   The district court overruled the
    objection, stating that   “I might have made them keep it if it had
    been done before it was an accomplished fact, but . . . .”      The
    district court also informed counsel for Akpan that if he could
    think of a better reason, the court would not allow the jurors to
    remove the notebooks from the courtroom the following day. Okoro’s
    defense counsel made no objection to the court’s order even though
    three attorneys were present.        Although Richard Haynes, lead
    counsel for Okoro, was in surgery, Sharon Levine, Paul Coselli, and
    Mike Durham, all counsel for Okoro, were present in the courtroom
    during the exchange.
    The next day, Haynes and Fickman moved for a mistrial on the
    ground that the district court had allowed the jurors to leave the
    courtroom with the summary notebooks.     The district court denied
    the motion and reminded defense counsel that the court had already
    admitted into evidence all of the notebook exhibits.        Defense
    counsel then moved the district court to poll the jury to see
    11
    whether any of the jurors had actually left the courtroom with the
    summary notebooks.       The district court denied the motion too.
    The    government    argues   that   Fickman’s   colloquy   with   the
    district court after the jury left the courtroom amounts to neither
    a specific nor timely objection to preserve an abuse-of-discretion
    standard of review for the district court’s denial of a mistrial.
    The government contends that we should review the district court’s
    denial of a mistrial for plain error.        We reject this argument.
    The government appears to argue that because counsel for
    appellants did not object to the removal of the summary notebooks
    before the jury left the courtroom, they failed to preserve their
    objection to the district court’s denial of a mistrial.                 This
    argument misconstrues the basis of appellants’ assignment of error.
    Okoro and Akpan ultimately appeal the district court’s denial of
    their motion for a mistrial based on its alleged error in allowing
    the jury to leave the courtroom with the summary notebooks.         Under
    Federal Rule of Criminal Procedure 51, “[a] party may preserve a
    claim of error by informing the court —— when the court ruling or
    order is made or sought —— of the action the party wishes the court
    to take, or the party’s objection to the court’s action and the
    grounds for that objection.”8         On the day following the jurors’
    putative removal of the notebooks from the courtroom, Attorney
    Haynes specifically (and immediately) sought a mistrial, arguing
    8
    FED. R. CRIM. P. 51(b).
    12
    that allowing the jurors to consider the summary notebooks outside
    of the courtroom prejudiced appellants because the books contained
    conclusions and allegations of the prosecution.      When Haynes and
    Fickman sought a mistrial for appellants, they followed Rule 51
    precisely: They advised the district court of the action that they
    wished it to take and the grounds for that action.    The appellants
    preserved their objection to the denial of a mistrial for appeal,
    which we review for abuse of discretion.9
    Akpan and Okoro do not challenge the government’s use of
    summary notebooks.   Rather, they challenge whether the district
    court erred when it did not grant a mistrial on the grounds that
    one or more of the jurors may have left the courtroom with the
    summary notebooks.   The general rule in this circuit is that “no
    material either introduced in evidence or excluded from evidence
    9
    We also note that the district court considered and treated
    Fickman’s statements as objections. When court reconvened the next
    day, the following colloquy occurred between Haynes and the
    district court:
    Mr. Haynes: . . . in my absence yesterday I’m advised
    that Juror No. 2 . . . requested of the Court
    instructions as to whether or not the jurors could take
    home with them what’s in evidence as Government’s Exhibit
    41DD, which is their summary of the conclusions and
    allegations and et cetera. The Court apparently, over
    objection timely made by counsel for Defendant Akpan ——
    The Court: Actually before objection.
    Mr. Haynes: Sir?
    The Court: Before objection.
    Mr. Haynes: Before objections?
    The Court: The objection was made after the jury had left.
    The record clearly reflects that the district court considered
    Fickman’s colloquies as objections and specifically treated them as
    such the next day when lead counsel for Okoro moved for a mistrial.
    13
    should be in the possession of members of the jury outside of the
    courtroom.”10       This is not, however, an immutable rule.    For
    example, in Rothstein, we ruled that the alleged possession of
    evidence by jurors outside of the courtroom amounted to harmless
    error because: (1) no misconduct was charged to anyone; (2) defense
    counsel admitted that it was no one’s fault; (3) the jurors used
    the summaries on the day after they may have taken them home; and
    (4) there was no proof that any juror actually had possession of
    the summaries outside of the courtroom.11
    The record supports a similar conclusion here.      First, the
    jurors used the summary notebooks throughout the trial with no
    further objection from appellants.     Second, appellants charge no
    one with misconduct and, indeed, there is no record evidence that
    any juror actually left the courthouse with a copy of the summary
    notebooks.12    Third, before the government distributed the summary
    notebooks, the district court had entertained and denied objections
    to the exhibits and admitted them into evidence.
    This last finding —— that the district court had already
    admitted all of the notebook exhibits into evidence —— is central
    10
    United States v. Rothstein, 
    530 F.2d 1275
    , 1279 (5th Cir.
    1976).
    11
    See 
    id. 12 Although
    the district court denied appellants’ motion to
    poll the jury, neither the record nor any evidence obtained later
    reflects that any one of them left the courtroom with the summary
    notebooks. Indeed, only one juror asked if he could do so.
    14
    to our holding that the district court did not abuse its discretion
    in not granting a mistrial under these circumstances.   Although we
    have found no case law directly on point, we recognize that other
    circuits that have considered objections to summary notebooks
    distinguish those instances when the exhibits in the notebooks have
    been admitted from those in which they have not.13
    We are admittedly concerned with the district court’s denial
    of appellants’ motion to poll the jury, but we recognize that the
    court specifically admonished the jury —— before allowing them to
    leave the courtroom with the summary notebooks —— to keep an open
    mind about the evidence and not to arrive at a conclusion until
    13
    In United States v. Rana, for example, where the defendant
    objected to the use of notebooks at trial, the Third Circuit held
    that “[t]he use of [a] notebook containing still-to-be admitted
    exhibits . . . conflicts with” a defendant’s right to have an
    impartial jury base its verdict on properly admitted evidence 
    944 F.2d 123
    , 126-27 (3rd Cir. 1991) (emphasis added).       In United
    States v. Smith, the defendant objected to the jury’s use of
    summary notebooks at trial because they contained “four incomplete
    exhibits, four exhibits that were never admitted, and all the
    exhibits before they were admitted in evidence.” 
    966 F.2d 1446
    ,
    
    1992 WL 137523
    , at *3 (4th Cir.) (unpublished disposition). The
    Fourth Circuit rejected the defendant’s challenge because there was
    no evidence in the record that the jury had considered any of the
    exhibits before the district court admitted them. See 
    id. Nor did
    the record support the defendant’s claims that any juror noticed or
    studied the four exhibits that were never admitted. See 
    id. Lastly, in
    United States v. Best, the defendant challenged the
    jury’s use of summary binders in the jury room during
    deliberations. 
    939 F.2d 425
    , 429 (7th Cir. 1991). The Seventh
    Circuit found no error in the jury’s use of the binders because the
    district court had admitted into evidence all of the exhibits in
    them. See 
    id. at 431.
    In addition, the district court there
    “verified, through individual voir dire of each juror, that the
    jurors considered all the evidence, not just the binders, in
    arriving at their verdict.” 
    Id. 15 they
    had heard all of the evidence.          As the district court itself
    noted, “[j]uries are presumed to follow the instructions of the
    court,” and there is no indication here that the jurors did not do
    so.14
    Akpan and Okoro appear to raise the same argument raised by
    the defendant in Best, which was rejected by the Seventh Circuit.15
    Appellants assert that the government’s summary notebooks made it
    easier for the jury to follow the government’s case, i.e., the
    summary notebooks served as a “road map” to the defendants’ guilt.
    Thus, they urge, the district court should have granted a mistrial
    on this basis. Even were we to “accept the argument that the
    binders permitted greater access to the government’s exhibits,” it
    is unclear how “easy access by itself amounts to error.”16 Although
    the summary notebooks here contained excerpts of exhibits one to
    forty-three, there is no record evidence that the jury did not have
    access to the originals.17
    Again, neither Akpan nor Okoro challenge the admissibility of
    any     of    the   exhibits    contained   in   the   government’s   summary
    notebooks, only the district court’s refusal to grant a mistrial
    14
    United States v. Fletcher, 
    121 F.3d 187
    , 197 (5th Cir. 1997)
    (citing Zafiro v. United States, 
    506 U.S. 534
    , 540-41 (1993)).
    
    15 939 F.2d at 429
    .
    16
    
    Id. at 430.
            17
    See 
    id. (noting that
    “the original exhibits, both the
    government and the defense documents, were carefully organized in
    boxes that were just as easily accessible to the jury.”).
    16
    because one of the jurors may have taken home the notebook.                  Under
    the demanding abuse-of-discretion standard,18 however, we will not
    reverse a district court unless “no reasonable person could take
    the trial court’s adopted position.”19             We do not find the district
    court’s ruling so erroneous that no reasonable person would have
    arrived at the same conclusion.
    Furthermore,     even    if   the    district       court   had   abused   its
    discretion, such “abuse is only reversible i[f] the error affected
    a substantial right of the complaining party,” i.e, we would
    subject the abuse to harmless error review, and conclude that if
    any error occurred here, it was harmless.20              As noted, the district
    court had admitted into evidence all of the exhibits in the
    notebooks   (to    which     appellants       do   not    object),     the   jurors
    eventually saw each exhibit, and the district court did not allow
    the jurors to remove the summary notebooks from the courtroom after
    the appellants brought to its attention that they disagreed with
    the practice.     If one juror happened to have taken his copy of the
    summary notebook one evening, doing so did not affect either
    appellant’s substantial rights.           We hold that the district court
    18
    See 
    id. (noting that
    although defendant objection to the
    presence of the   binders in the jury room during deliberations, the
    proper standard   of review was whether the district court abused its
    discretion when   it failed to grant a new trial).
    19
    Whitehead v. Food Max of Miss., Inc., 
    332 F.3d 796
    , 803 (5th
    Cir. 2003).
    20
    Green v. Administrators of Tulane Educ. Fund, 
    284 F.3d 642
    ,
    660 (5th Cir. 2002).
    17
    did not abuse its discretion when it denied Okoro and Akpan’s
    motion for a mistrial.
    We are nevertheless constrained to reiterate the general rule
    of this circuit that “no material either introduced in evidence or
    excluded from evidence should be in the possession of members of
    the jury outside of the courtroom.”21      Appellants note, and we
    agree, that such a rule discourages jurors from deliberating
    outside of the jury room and from discussing evidence with those
    who are not part of the trial process.   The rule also keeps jurors
    from contemplating evidence before its admission. The context in
    which evidence is introduced is crucial to the weight that the jury
    potentially affords it.    Although we reiterate that this is not a
    bright-line rule, we caution any district court that considers
    making such an exception to the rule that adequate cautionary
    instructions and procedural safeguards must be present to ensure
    that an allowance of this kind does not so taint the trial process
    as to require a new trial.
    B. Sufficiency of the Evidence: Okoro
    Okoro also contends that the evidence adduced at trial was
    insufficient to support his convictions on counts seven and eight,
    which charged him with aiding and abetting mail fraud under 18
    U.S.C. §§ 1341 and 2.     At the close of the government’s evidence
    and at the end of trial, both Okoro and Akpan moved for a judgment
    21
    
    Rothstein, 530 F.2d at 1279
    .
    18
    of acquittal under Federal Rule of Criminal Procedure 29 with
    regard to all counts.              Okoro expressly sought a judgment of
    acquittal on counts seven and eight.
    We review a denial of a motion for judgment of acquittal de
    novo.22      We “review[] jury verdicts with great deference and
    evaluate[] the evidence in the light most favorable to the verdict
    and afford the government the benefit of all reasonable inferences
    and credibility choices.”23            When treating a challenge to the
    sufficiency of the evidence to sustain a conviction, we consider
    “‘whether, viewing the evidence in the light most favorable to the
    government, a rational trier of fact could have found the essential
    elements     of    the   offense    beyond     a   reasonable   doubt.’”24   “All
    reasonable inferences from the evidence must be construed in favor
    of   the    jury   verdict.”25       We   will     not   “supplant   the   jury’s
    determination of credibility with . . . [our] own.”26
    To prove a mail fraud violation under Section 1341, the
    government must establish: “(1) a scheme to defraud; (2) use of the
    22
    United States v. McCauley, 
    253 F.3d 815
    , 818 (5th Cir.
    2001).
    23
    
    Id. (quoting United
    States v. Odiodio, 
    244 F.3d 398
    , 400-02
    (5th Cir. 2001)) (quotations omitted).
    24
    
    Id. (quoting United
    States c. De Leon, 
    170 F.3d 494
    , 496
    (5th Cir. 1999)).
    25
    United States v. Martinez, 
    975 F.2d 159
    , 161 (5th Cir.
    1992).
    26
    
    Id. 19 mails
    to execute the scheme; and (3) the specific intent to
    defraud.”27     “Each separate use of the mails to further a scheme to
    defraud is a separate offense.”28 The government need not establish
    that the defendant used the mails himself or that he actually
    intended that the mails be used.29              The government need only prove
    that the scheme depended for its success in some way upon the
    information and documents which passed through the mail.30 Further,
    a defendant acts with the intent to defraud when he “acts knowingly
    with the specific intent to deceive for the purpose of causing
    pecuniary ‘loss to another or bringing about some financial gain to
    himself.’”31
    To obtain a conviction for aiding and abetting under 18 U.S.C.
    § 2, the government must prove “that the defendant associated with
    a criminal venture, purposefully participated in the criminal
    activity,       and    sought   by   his     actions   to   make   the   venture
    successful.”32        A defendant associates with a criminal venture when
    27
    United States v. Floyd, 
    343 F.3d 363
    , 371 (5th Cir. 2003);
    United States v. Tencer, 
    107 F.3d 1120
    , 1125 (5th Cir. 1997).
    28
    United States v. Pazos, 
    24 F.3d 660
    , 665 (5th Cir. 1994)
    (citing United States v. McClelland, 
    868 F.2d 704
    , 706 (5th Cir.
    1989)).
    29
    
    Id. 30 See
    id.
    31
    United 
    States v. Blocker, 
    104 F.3d 720
    , 732 (5th Cir. 1997)
    (quoting United States v. Jimenez, 
    77 F.3d 95
    , 97 (5th Cir. 1996)).
    32
    
    Id. at 733
    (citing United States v. Polk, 
    56 F.3d 613
    , 620
    (5th Cir, 1995).
    20
    he “shares in the criminal intent of the principal.”33                         To
    establish that the defendant participated in the criminal activity,
    the government must prove that “he has acted in some affirmative
    manner to aid the venture.”34            “Mere presence and association are
    insufficient to sustain a conviction for aiding and abetting.”35
    Counts seven and eight charged Okoro with the receipt —— by
    mail —— of funds from USAA for medical services that he did not
    render to Audrey Santos. Okoro argues that the evidence adduced at
    trial was insufficient to uphold his conviction because Santos
    never testified.           Santos’s boyfriend, Minh Nguyen, testified at
    trial     with    regard    to   the   treatment   that   both   he   and   Santos
    received.        In sum, Okoro argues that Nguyen’s testimony alone is
    insufficient to sustain his conviction.                   Thus, he urges, the
    government failed to prove that he falsely represented to USAA the
    medical services that he rendered to Santos.                     We reject this
    argument.
    Nguyen testified that he and Santos went to MedCare on the
    advice of their attorney after they were injured in an automobile
    accident.        The same man examined both him and Santos.            Guadalupe
    Castro (“Lupy”) then took them to adjacent rooms, placed them on
    therapy beds, and set the timers.              Although Nguyen testified that
    33
    
    Id. (citing United
    States v. Jaramillo, 
    42 F.3d 920
    , 923
    (5th Cir. 1995)).
    34
    
    Id. 35 Id.
    21
    he never witnessed a doctor examine Santos, he also stated that he
    would have been aware if she had received any treatment on her
    therapy bed because her treatment room was immediately adjacent to
    his.   Nguyen testified that he and Santos could converse with each
    other from the adjacent rooms.      Moreover, Nguyen stated that they
    attended other therapy sessions at Medcare together, and that on
    the one occasion when Santos attended a session alone, he drove her
    there.
    Nguyen further testified that in each others’ presence, Lupy
    instructed the two of them to sign the blank sign-in sheets, and
    they did so.    Nguyen also stated that he saw Santos fill out the
    forms and that each of them signed forms for dates on which they
    did not visit the clinic. Nguyen also identified the MedCare bills
    that each received, testifying that each bill noted that the
    patient had received treatments that he or she had not.          And, USAA
    mailed the settlement checks to Nguyen’s and Santos’s attorney,
    who, in turn, paid both patients.
    The record belies Okoro’s contention that the government
    relied solely on Nguyen’s testimony to sustain counts seven and
    eight.   At trial, Dr. Vachhani identified Okoro’s signature on the
    progress notes    in   Nguyen’s   patient   file,   and   on   the   medical
    summary, the progress notes, and the narrative in Santos’s file.
    Nguyen stated that Okoro never examined either him or Santos.
    Indeed, Okoro himself testified that he never treated either
    patient.
    22
    Other evidence adduced at trial established that Okoro and the
    other clinic employees followed this pattern with all the patients
    named by the government in counts one through four and nine through
    fifteen of the second superceding indictment, including Nguyen
    himself.     The jury was entitled to rely on all of the other
    evidence and testimony to determine whether a scheme to defraud
    existed and whether Okoro followed that scheme with regard to
    Santos.36    The evidence was sufficient for a jury to conclude that
    Okoro falsely reported medical services that he rendered Santos
    when he had not —— medical services that were subsequently billed
    via mail to USAA.        We hold that the evidence was sufficient to
    support Okoro’s convictions on counts seven and eight.
    C.     Sufficiency of the Evidence: Akpan
    Akpan also argues that the evidence was insufficient to
    convict him of aiding and abetting mail fraud in violation of
    Sections    1341   and   2.   Count    one   of   the   second   superceding
    indictment charged Akpan with aiding and abetting such mail fraud
    by receiving inflated insurance payments from USAA for treatment
    that Agents Tucker and Jefferson allegedly received.             Akpan argues
    that the evidence is insufficient to uphold his conviction on count
    one, because the government relied solely on an audiotape of a
    36
    See, e.g., 
    Tencer, 107 F.3d at 1127-28
    (noting that even
    though patient charged in indictment did not testify at trial with
    regard to fraudulent services, jury was entitled to rely on
    circumstantial evidence in form of testimony of other patients with
    regard to whether claims submitted to insurance company were
    fraudulent).
    23
    conversation between him and the two undercover agents.                Akpan
    advances    that   the   audiotape   is   unintelligible    and     does   not
    demonstrate that he stood to derive any financial benefit from
    Tucker’s or Jefferson’s cases. In sum, Akpan maintains that the
    audiotape merely demonstrates that he performed his job as the
    clinic administrator.
    Contrary to Akpan’s argument, the government did not rely
    solely on the audiotape.        Thus, his reliance on an allegedly
    unintelligible     audiotape   is    meritless.   Agent    Tucker    herself
    testified in detail at trial as to her interaction with Akpan. Her
    testimony revealed that Claudia Ramon was in the room during the
    conversations with Akpan, that Akpan had Tucker’s and King’s files
    with him, and that he returned them to Ramon when the conversation
    ended.    Tucker also testified that after she, Ramon, and King left
    Akpan’s office, Ramon provided them with the dates to fill in on
    their patient files.
    Further, as noted, to conclude that Akpan participated in a
    scheme to defraud, the jury was entitled to rely on “circumstantial
    evidence and by inferences drawn from the facts and circumstances
    surrounding the scheme.”37     Although the district court agreed to
    give a limiting instruction to the jury regarding which witnesses
    and evidence it could consider during deliberations on count one
    (the sole count that charged Akpan with mail fraud), even Akpan’s
    37
    United States v. O’Brien, 
    119 F.3d 523
    , 532 (7th Cir. 1997).
    24
    counsel conceded that other witness testimony could establish a
    common scheme or plan.
    The government established that Akpan and Okoro had an ongoing
    business relationship.      They had worked together at Westchase and
    Spectrum Clinics before they transferred to MedCare.               In addition,
    Akpan owned one of the clinics for which Okoro worked as a
    provider. Most importantly, the evidence at trial established that
    at both Spectrum and MedCare, Akpan was the administrator who
    supervised   the   office   staff   and    worked   with    the    lawyers   and
    insurance companies to ensure that the clinic received its share of
    the settlement funds for the services rendered to the car accident
    “victims.”    Akpan thus supervised the key activity of the mail
    fraud scheme —— the mailing of letters to the insurance companies
    and the attorneys to ensure that they paid the clinic and, in turn,
    the receipt of such funds through the mails.                    The audiotape,
    containing the most damning evidence, viz., Akpan’s insistence that
    the clinic receive its money (because, as he alleged, many patients
    denied    receiving   services      as    many   times     as     their   record
    demonstrated), further bolstered the government’s allegation of a
    common scheme or plan. The record demonstrates sufficient evidence
    to sustain Akpan’s conviction on count one.
    D.    Rule 404(b) Evidence
    Okoro maintains that the district court committed reversible
    error when it admitted extrinsic evidence of his involvement with
    25
    seventeen home health care agencies in support of the health care
    fraud charges in counts twenty through twenty-six of the second
    superceding indictment.         Okoro first contends that the government
    failed to provide him with notice before trial of its intent to use
    Rule 404(b) evidence.          Okoro argues in the alternative that the
    evidence does not pass Rule 404(b)’s admissibility test.
    Generally,        we   review   a   trial    court’s   decision    to   admit
    evidence for abuse of discretion.38           As Okoro did not object to the
    admissibility of the evidence until his motion for a new trial, we
    review the district court’s decision for plain error only.39                 Also,
    Okoro raises for the first time on appeal the issue whether he
    properly received notice of the government’s intent to use the
    specific acts evidence. Accordingly, we also review this objection
    for plain error.40
    Okoro’s contention that Rule 404(b) applies here is off the
    mark. Okoro forfeited the protection of Rule 404(b) when he placed
    his character at issue by testifying at trial.41                  Although this
    “does     not   give    the   prosecution        free   rein,”   it   allows   the
    38
    United States v. Riggio, 
    70 F.3d 336
    , 339 (5th Cir. 1995).
    39
    United States v. Smith, 
    203 F.3d 884
    , 890 (5th Cir. 2000)
    (“However, if a defendant fails to object at trial, this Court will
    only review evidentiary rulings for plain error.”).
    40
    
    Id. 41 United
    States v. Mikolajczyk, 
    137 F.3d 237
    , 244 (5th Cir.
    1998) (citing United States v. Tomblin, 
    46 F.3d 1369
    , 1388 (5th
    Cir. 1995)) (“A defendant makes his character an issue, losing the
    protection of rule 404(b), when he testifies.”).
    26
    government, under Federal Rule of Evidence 608(b), to cross-examine
    the defendant “with respect to instances of misconduct that are
    clearly    probative   of   truthfulness    or    untruthfulness,       such   as
    perjury, fraud, swindling, forgery, bribery, and embezzlement.”42
    Because the government offered the other-acts evidence to impeach
    Okoro on cross-examination while he was on the stand so as “to show
    the character of the witness for untruthfulness,” Rule 404(b)’s
    notice provision and its two-part admissibility test do not apply
    here.43
    The    government’s    evidence    pertained       directly   to    Okoro’s
    character for truthfulness or the lack thereof.            Okoro insisted on
    direct examination that he did not enter into a scheme to defraud
    Medicare.     He   testified   that    he   did   not    authorize      the   home
    healthcare clinics to bill Medicare under his provider number for
    services that he himself did not render.          Okoro stated that he had
    regularly treated patients in nursing or halfway homes from 1996
    until 1999, but that he did not charge for these services and did
    not receive many payments for services that he did provide.
    On cross-examination, the government demonstrated that, to the
    contrary, seventeen home healthcare providers had charged Medicare
    42
    
    Id. (quotations omitted);
    see also 
    Bustamente, 45 F.3d at 945-46
    (“FRE 608(b) allows the government to inquire into specific
    instances of conduct relevant to Bustamente’s character for
    truthfulness.”).
    43
    
    Tomblin, 46 F.3d at 1388
    & n. 51 (quoting United States v.
    Schwab, 
    886 F.2d 509
    , 511 (2d Cir. 1989)).
    27
    almost two million dollars for Okoro’s services.                 Of this two
    million dollars, the home healthcare providers paid Okoro $15,000
    in “consulting fees.”     This evidence directly contradicted Okoro’s
    testimony that the home healthcare providers did not pay him.            The
    district court did not abuse its discretion in admitting this
    evidence under Rule 608(b).
    E.      Admissibility of Witness Testimony
    Okoro informed the district court that he intended to call
    three groups of witnesses: (1) personal injury attorneys who had
    represented car accident victims named in the indictment, which
    attorneys would testify that their clients were satisfied with the
    services Okoro had rendered and who never questioned the amount of
    money that the insurance companies paid; (2) former patients of
    Okoro not named in the indictment who would testify that they were
    satisfied with Okoro’s services; and (3) owners of physical therapy
    clinics who would rebut the allegations that Okoro billed them for
    services that he did not perform.         Okoro argues that the district
    court     severely   limited   his   right   to   call   these    witnesses,
    contending that the district court excluded testimony of Okoro’s
    former patients and the owners of the medical clinics.             We review
    a district court’s rulings on the admissibility of the testimony of
    a witness for abuse of discretion.44
    44
    United States v. Gray, 
    105 F.3d 956
    (5th Cir. 1997).
    28
    The government first argues that Okoro made no proffer with
    regard to the testimony of the witnesses who he intended to call.
    Federal Rule of Evidence 103 states that no “[e]rror may be
    predicated upon a ruling which admits or excludes evidence unless
    a substantial right of the party is affected, and . . . the
    substance of the evidence was made known to the court by offer or
    was apparent from the context within which questions were asked.”45
    We have held that a defendant will preserve his challenge to
    excluded evidence if “‘the trial court has been informed as to what
    counsel intends to show by the evidence and why it should be
    admitted,    and   this   court   has    a   record   upon   which   [it]   may
    adequately examine the propriety and harmfulness of the ruling.’”46
    We will not review a challenge to excluded evidence, however,
    unless the defendant made an offer of proof at trial.47              We reject
    the government’s contention on this point because the record
    reflects that Okoro’s counsel held a lengthy discussion with the
    district court in which he informed the court about the testimony
    of the witnesses that he intended to call.
    Contrary to Okoro’s argument, however, the district court did
    not exclude these witnesses.             Okoro called four patients who
    45
    FED. R. EVID. 103(a) & (a)(2).
    46
    United States v. Jimenez, 
    256 F.3d 330
    , 343 (5th Cir.
    2001)(quoting United States v. Ballis, 
    28 F.3d 1399
    , 1406 (5th Cir.
    1994)).
    47
    United States v. Winkle, 
    587 F.2d 705
    , 708 (5th Cir. 1979).
    29
    testified to their relationship with Okoro and that they were
    satisfied with Okoro’s services.        Although the district court
    limited Okoro’s former patients’ testimony and stated that they
    could not testify with regard to billing matters because the
    indictment did not name these patients, Okoro did not object to
    this ruling or attempt to proffer the testimony of other patients
    after the four testified.
    Further, the following colloquy occurred when Okoro mentioned
    the third set of witnesses —— the clinic owners:
    Mr. Haynes: Well, that would be what we would want the
    clinic people to say and that is, one, they had the
    agreement with [Okoro], two, that he was salary or actual
    hours there, three that he came by when he told then he
    would be scheduled to come by and that when he did come
    by, he performed evaluations on the patients for whom
    they gave bills to the insurance company and/or Medicare.
    The Court: Well, now, that’s three things, all of which
    that’s fine.
    The district court then stated that it would allow the clinic
    owners to testify as to the custom or practice of the clinic at the
    times that Okoro was there.       Okoro did not object at trial that
    this testimony would be too limited; in fact, he called one clinic
    owner to the stand.   After that clinic owner’s testimony, counsel
    for Okoro informed the district court that he would let everyone
    know after lunch whether he would call another owner to the stand.
    After lunch, however, counsel for Okoro made no further mention
    about calling another clinic owner. Okoro’s objections are without
    merit.   We find no error here.
    30
    F.      Okoro’s Sentence
    Okoro       asserts    several       challenges       to    his      sentence.
    Specifically, he contends that under United States v. Booker,48 the
    district    court    erred   when    it    calculated       the   amount    of   loss
    attributable to him under United States Sentencing Guidelines
    (“U.S.S.G.”) § 2F1.1.49       Okoro also challenges the district court’s
    application of U.S.S.G. § 2F1.1(b)(8)(B), pursuant to which the
    district court enhanced Okoro’s base offense level by four levels
    because he had deprived one or more financial institutions of more
    than one million dollars. In his supplemental Rule 28(j) letter to
    this court, Okoro also challenges the district court’s enhancement
    of   his   base    offense   level   by:       (1)   four   levels   for    being   a
    leader/organizer of the criminal activity; (2) two levels for more
    than minimal planning; and (3) two levels for abuse of his position
    of trust.50
    48
    —— U.S. ——, 
    125 S. Ct. 738
    (Jan. 12, 2005).
    After the Supreme Court handed down Blakely v. Washington, ——
    U.S. ——, 
    124 S. Ct. 2531
    , both appellants raised Blakely challenges
    to their sentences in a Rule 28(j) letter to this court. When the
    Supreme Court decided Booker, we ordered the parties to brief its
    effect on their sentences.      Thus, because Booker specifically
    applies to the U.S.S.G., we refer to each appellant’s challenge to
    his sentence as a Booker challenge.
    49
    The district court increased Okoro’s base offense level by
    14 levels based on a total loss of between five and ten million
    dollars. The indictment alleged a total loss of $75,408.47.
    50
    Okoro also contends that the district court erred when it
    specified that his 31-month sentence for tax fraud should run
    consecutively to his 120-month sentence for mail and healthcare
    fraud. As we remand for resentencing in light of Booker, we need
    not and therefore do not reach this challenge.
    31
    The Supreme Court made clear in Booker that “[a]ny fact (other
    than a prior conviction) which is necessary to support a sentence
    exceeding the maximum authorized by the facts established by a plea
    of guilty or a jury verdict must be admitted by the defendant or
    proved to the jury beyond a reasonable doubt.”51                    The government
    argues that Okoro has not properly preserved his Booker objection
    and that we should review Okoro’s challenge for plain error.52
    Okoro did not, however, fail to preserve his Booker challenge to
    the district court’s loss calculation.                 Our review of Okoro’s pre-
    sentencing      objections     to    the    Presentence     Investigation     Report
    (“PSR”) and his objections during his sentencing reveal that Okoro
    repeatedly objected to the district court’s determination of a
    range of financial loss between five and ten million dollars on the
    ground that that figure had not been proven at trial.                     Okoro also
    consistently      urged       that     the       district   court    confine      its
    determination of loss to the amount alleged in the indictment.
    Although Okoro never explicitly mentioned the Sixth Amendment,
    Apprendi, or Blakely until his Rule 28(j) letter, we are satisfied
    that his objections adequately apprised the district court that
    Okoro     was   raising   a    Sixth       Amendment    objection    to    the   loss
    calculation because the government did not prove to the jury beyond
    a reasonable doubt that the loss was between five to ten million
    
    51 123 S. Ct. at 756
    .
    52
    See United States v. Mares, —— F.3d ——, 
    2005 WL 503715
    , at
    *7-8 (5th Cir. Mar. 4, 2005).
    32
    dollars.53 When, as here, a defendant preserves his error, “we will
    ordinarily vacate the sentence and remand, unless we can say the
    error is harmless under Rule 52(a) of the Federal Rules of Criminal
    Procedure.”54
    We recognize that several circuit courts appear to be taking
    divergent positions on the question whether a harmless error
    analysis applies when a Sixth Amendment violation occurs.55   Were
    53
    See, e.g., United States v. Selwyn, 
    398 F.3d 1064
    , 1066-67
    (8th Cir. 2005) (noting, in case involving Sixth Amendment
    violation, that defendant preserved error by objecting to drug
    quantity findings); United States v. Fox, 
    396 F.3d 1018
    , 1027 (8th
    Cir. 2005) (noting, in case involving Sixth Amendment violation,
    that Booker objection to drug quantity finding in supplemental pro
    se brief preserved error).
    We recognize, as have other circuits, that there exists some
    question “whether, in cases not involving a Sixth Amendment
    violation, there must be an objection to the mandatory nature of
    the guidelines in order to preserve that error on appeal, or
    whether a general objection to the sentence imposed under the
    guidelines is sufficient to preserve a Booker challenge.” United
    States v. Sayre, —— F.3d ——, 
    2005 WL 544819
    , at * 1 (8th Cir. Mar.
    9, 2005). Because a pure Booker Sixth Amendment violation occurred
    here, however, we need not —— and do not —— resolve this debate.
    54
    Mares, 
    2005 WL 503715
    , at *7 n. 9.
    55
    For example, the Sixth Circuit seems to intimate that a
    harmless error analysis is not required when a constitutional
    violation occurs. See, e.g., United States v. Oliver, 
    397 F.3d 369
    , 381 (6th Cir. 2005) (noting in a case where defendant failed
    to preserve error that “[h]aving concluded that the district
    court’s sentencing determinations in this case plainly violate the
    Sixth Amendment, we need not consider whether such an error is
    harmless.”). The Sixth Circuit’s position finds support in the
    last sentence of the remedial Booker opinion. —— U.S. at ——, 125 S.
    Ct. at 769 (“It is also because, in cases not involving a Sixth
    Amendment violation, whether resentencing is warranted or whether
    it will instead be sufficient to review a sentence for
    reasonableness may depend upon application of the harmless-error
    doctrine.”).
    On the other hand, the District of Columbia Circuit appears to
    33
    we to review Okoro’s sentence for harmless error, however, we would
    find that here the error was harmful.56           Harmless error is “[a]ny
    defect, irregularity, or variance that does not affect substantial
    rights” of the defendant,57 and “arises when the mistake fails to
    prejudice the defendant.”58 “Prejudice occurs when the error ‘ha[s]
    affected the outcome of the district court proceedings.’”59                The
    government must bear the burden of demonstrating that the error was
    harmless60 by demonstrating beyond a reasonable doubt that the
    federal constitutional error of which a defendant complains did not
    contribute to the sentence that he received.61
    The government cannot meet this burden here.            It can point to
    no record evidence that would prove beyond a reasonable doubt that
    the district court would not have sentenced Okoro differently had
    it acted under an advisory Guidelines regime.          Based on the record
    before    us,   we   cannot   say   that   the   mandatory   nature   of   the
    assume that Booker challenges are “governed by the harmless error
    standard appropriate for constitutional error . . . .”     United
    States v. Coumaris, —— F.3d ——, 
    2005 WL 525213
    , at *6 (D.C. Cir.
    Mar. 8, 2005).
    56
    Mares, 
    2005 WL 503715
    , at *7 n. 9.
    57
    FED. R. CRIM. P. 52(a).
    58
    United States v. Munoz, 
    150 F.3d 401
    , 413 (5th Cir. 1998)
    (citing United States v. Olano, 
    507 U.S. 725
    , 734 (1993)).
    59
    
    Id. 60 See
    id.
    61
    Chapman 
    v. California, 
    386 U.S. 18
    , 24 (1967).
    34
    Guidelines at the time of Okoro’s sentence did not contribute to
    the sentence that he received.           Accordingly, we vacate Okoro’s
    sentence and remand for resentencing.62
    G.      Akpan’s Sentence
    Akpan     also   challenges   his   sentence   on   Booker   grounds.
    Specifically, Akpan argues that the district court violated Booker
    when it calculated the loss and increased his sentence based on an
    amount of loss not found by the jury nor admitted by him.           Akpan
    also argues that the district court violated his right to trial by
    jury when it increased his base offense level by two levels for
    more than minimal planning and by three levels for a leadership
    role in the offense. The government counters that Akpan has not
    preserved his Booker challenge as he raised it for the first time
    on appeal.      Our review of the record demonstrates that this
    contention is accurate.     Akpan did not couch his arguments in the
    district court as to the loss calculation in the same terms as
    Okoro.    Thus, we review Akpan’s sentence for plain error.63
    Under the plain error test, we may not correct an error that
    the defendant has failed to preserve unless there is “(1) error,
    62
    Because we vacate and remand Okoro’s entire sentence, we
    need not and do not reach his other arguments of sentencing errors;
    rather, we leave to the discretion of the district court, whether
    in its discretion, it will impose the identical sentence with the
    identical departures or enhancements, or both.
    63
    Mares, 
    2005 WL 503715
    , at *7-8.
    35
    (2) that is plain, and (3) that affects substantial rights.”64 Even
    if the defendant carries his burden as to these three factors,
    however, we will not correct the error unless “the error seriously
    affects the fairness, integrity, or public reputation of judicial
    proceedings.”65
    Under Mares, Akpan passes the first two requirements for plain
    error,66 but he fails the third.         To demonstrate that the error
    affected his substantial rights, Akpan had to show that the error
    affected the outcome of the district court proceedings.67 Thus, the
    defendant, rather than the government, bears the burden here.68
    Akpan must “demonstrate a probability ‘sufficient to undermine
    confidence in the outcome.’”69
    Under Mares, Akpan cannot satisfy his burden.          He cannot
    demonstrate that the district judge —— sentencing under an advisory
    rather than a mandatory Guidelines regime —— would have sentenced
    him differently.70   The record does not contain anything to reflect
    64
    United States v. Cotton, 
    535 U.S. 625
    , 631 (2002).
    65
    Id.
    66
    
    2005 WL 503715
    , at *8.
    67
    See 
    id. (quoting United
    States v. Olano, 
    507 U.S. 725
    , 734
    (1993)).
    68
    
    Olano, 507 U.S. at 734
    .
    69
    United States v. Dominguez-Benitez, —— U.S. ——, 
    124 S. Ct. 2333
    , 2340 (2004).
    70
    Mares, 
    2005 WL 503715
    , at *9.
    36
    what the district court would have done had it sentenced Akpan
    under an advisory Guidelines regime.         The district court made no
    remarks on the record to indicate that (1) it was bound by the
    Guidelines, (2) it felt constrained by the Guidelines to sentence
    Akpan in the way that it did, or (3) it would have sentenced him
    differently if it had had the discretion to do so.        In the total
    absence of any such language, Akpan cannot carry his burden on the
    third prong of the plain-error test.
    Akpan also contends that the district court erred when it did
    not state the reasons for imposing his particular sentence under 18
    U.S.C. § 3553(c)(1).      As Akpan failed to object to the district
    court’s failure to state its reasons for imposing his particular
    sentence, our review is again for plain error.71
    Under 18 U.S.C. § 3553(c), “[i]f a defendant’s guidelines
    sentencing range exceeds twenty-four months, the district court
    must state in open court its reasons for the particular sentence
    that it has imposed.”72     Akpan   argues    that the district court
    failed to state its reasons in open court for imposing a 41-month
    sentence as to Count One.
    Based on a total offense level of 21 and a criminal history
    category of I, the district court determined that Akpan’s guideline
    range was between 37 to 46 months imprisonment.           “Although 18
    71
    United States v. James, 
    46 F.3d 407
    , 407-08 (5th Cir. 1995).
    72
    
    Id. at 407
    (citing 18 U.S.C. § 3553(c)(1)).
    37
    U.S.C. § 3553(c) requires the sentencing judge to state in open
    court the reasons for its imposition of the particular sentence .
    . . the district court need not provide reasons for imposing a
    sentence at a particular point within the [applicable Guidelines
    range] if this range is less than twenty-four months.”73 Here,
    Akpan’s guideline range did not span a range of twenty-four months.
    His argument   is   therefore   without   merit.    We   affirm   Akpan’s
    sentence.
    III. CONCLUSION
    For the foregoing reasons, we AFFIRM both Okoro’s and Akpan’s
    convictions, as well as Akpan’s sentence.          In light of Okoro’s
    preservation of Sixth Amendment error, however, we VACATE his
    sentence and remand for resentencing.
    AFFIRMED IN PART, VACATED IN PART, AND REMANDED.
    73
    United States v. Pippin, 
    903 F.2d 1478
    , 1484-85 (11th Cir.
    1990) (citations and quotations omitted). See also United States
    v. Richardson, 
    925 F.2d 112
    , 117 (5th Cir. 1991) (“Following the
    reasoning in United States v. Ehret, 
    885 F.2d 441
    (8th Cir. 1989),
    cert. denied, 
    493 U.S. 1062
    110 S. Ct. 879
    , 
    107 L. Ed. 2d 962
    (1990), we find that when the spread of an applicable Guideline
    range is less than 24 months, the district court is not required to
    state its reasons for imposing a sentence at a particular point
    within the Guideline range.”).
    38