United States v. Manges ( 1997 )


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  •                         UNITED STATES COURT OF APPEALS
    FOR THE FIFTH CIRCUIT
    __________________
    No. 95-50645
    __________________
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    versus
    CLINTON MANGES; DAVID WAYNE MYERS; and CARL HUBERT SHANKLIN,
    Defendants-Appellants.
    ______________________________________________
    Appeals from the United States District Court for the
    Western District of Texas
    ______________________________________________
    April 15, 1997
    Before REAVLEY, GARWOOD, and BENAVIDES, Circuit Judges.
    BENAVIDES, Circuit Judge:
    This appeal involves a plot to retain the oil and gas rights
    to a parcel of submerged property in Corpus Christi Bay, Nueces
    County, Texas, known as tract 350.              The indictment alleged that
    appellants prevented the leased mineral rights from reverting to
    the   state   by   submitting      false    documents    to   state    regulatory
    agencies and making corrupt payments to a state official.
    Appellants appeal their convictions and sentences on charges
    of    conspiracy    and    mail    fraud;      their   briefs   teem    with   an
    overabundance      of     evidentiary,      statutory,    and   constitutional
    challenges.        Many of these claims do not merit full discussion.              We
    are persuaded by only one of appellants’ arguments:                       Shanklin’s
    contention that the conspiracy charge against him was time-barred.
    FACTUAL BACKGROUND
    Clinton Manges has been described as a legendary figure in
    South Texas: an oilman and rancher, wheeler-dealer and political
    kingmaker.        Born in poverty in Cement, Oklahoma, Manges amassed a
    billion-dollar        fortune,      only   to    face   bankruptcy   in    1989   and
    criminal charges in the instant case.1                   David Wayne Myers, the
    ringleader of the scheme alleged in the indictment, was an oil
    industry entrepreneur based in San Antonio, Texas.                    Carl Hubert
    Shanklin was an independent contractor who performed “workover”
    operations on oil and gas wells.                Also named in the indictment was
    Benny       Joe   McLester,   who    as    the    “gauger”   for   tract    350   was
    responsible for accurately measuring and reporting its output.
    It is unnecessary to detail the various corporate entities
    through which Myers wielded control over the operations on tract
    350.    We note simply that Myers, through companies he controlled,
    at relevant times subleased the oil and gas rights to tract 350 and
    three adjacent tracts; that his close business associate Morris D.
    Jaffe, Jr., acquired interests in the tracts through an assignment
    from Myers; and that Myers was instrumental in efforts to convince
    state regulators that the lease terms were being met.
    1
    See, e.g., David McLemore, Oilman Manges Sentenced, DALLAS
    MORNING NEWS, Aug. 26, 1995, at A1, available in 
    1995 WL 9055925
    .
    2
    The mineral rights to tract 350 were controlled by the Texas
    General Land Office (GLO), which grants subsurface oil and gas
    rights throughout Texas in a competitive bid process.                Successful
    bidders are required to pay the state yearly rental fees, plus
    royalties      representing   a   portion    of    their   revenues.       Under
    applicable state regulations, the holder of an oil and gas lease
    must act affirmatively to maintain the rights granted by the state.
    The lessee must (1) continuously produce oil and gas; (2) undertake
    timely   and    diligent   workover   efforts      to   restore     or   increase
    productive capacity; or (3) pay a “shut-in royalty” to the state,
    supported by an affidavit stating that there is no economic market
    for the tract’s resources.          To put it another way, if a market
    exists for a tract’s oil and gas, and if the tract fails to produce
    for 60 days and is not worked over during that time, the lease
    reverts to the state.      Once that happens, the GLO may re-lease the
    tract to the highest bidder.
    It is undisputed that tract 350 should have reverted to the
    state for lack of production at the time of the events described in
    the   indictment,     if   not    earlier.        Myers,   Jaffe,    and    their
    colleagues, believing that the lease was worth millions, sought to
    prevent its reversion.        Rather than meet the requirements imposed
    by state law, however, appellants submitted false documents to the
    GLO and tried to buy the favor of its chief clerk, Jack Giberson.
    Appellants and others tried to prevent the reversion of the
    lease by a variety of methods.        Specifically, viewing the evidence
    in the light most favorable to the verdict, Myers had McLester
    3
    prepare a series of false production reports claiming that tract
    350 had produced various quantities of oil.          The false production
    figures provided by McLester were duly reported to state regulators
    by the company nominally operating the tract.2
    Moreover, Myers orchestrated the filing of false shut-in
    affidavits   with   the   GLO.   Three    such    affidavits   were   filed,
    claiming variously that the shut-in was based on the well’s lack of
    production, a lack of market for its oil, and a severed gas line.
    Myers swore out an affidavit on July 31, 1989, stating that
    tract 350 had been worked over at intervals of less than 60 days
    between June 28, 1988, and July 27, 1989.             This affidavit was
    supported by daily time records and documents called morning field
    reports,   prepared   and   signed   by   Shanklin.      These   documents
    purported to be contemporaneous records of the work described by
    Myers; according to the prosecution’s evidence at trial, however,
    they were post hoc fabrications designed to convince the GLO that
    the lease to tract 350 had been maintained.
    If Shanklin covered Myers’ back in the oil fields of Corpus
    Christi Bay, Manges fronted for him in the government halls of
    Austin.    Starting in the summer of 1988, Manges tried to convince
    his contacts in the GLO that the lease to tract 350 had been
    maintained. Some time that summer, Manges accompanied Jaffe to the
    GLO to discuss tract 350 with Giberson.          Starting soon thereafter,
    2
    The operator of record of an oil and gas lease must report
    its monthly production to the Texas Railroad Commission in a “P-1"
    report. The GLO relies on the accuracy of these reports, and was
    misled when the company operating tract 350 filed reports
    incorporating McLester’s false data.
    4
    in August 1988, Manges made a series of five payments to Giberson
    totaling $30,100.     The indictment listed the final two payments--
    $6,400 on July 11, 1989, and $3,700 on July 31, 1989--as overt acts
    in furtherance of the alleged conspiracy.
    GLO staff members testified that Giberson did not actually
    influence their decisions regarding tract 350.        Moreover, it is
    undisputed that Giberson did not keep the money; all five payments
    were deposited in the bank account of his son, Richard Giberson.
    Richard Giberson had been employed by the San Antonio Gunslingers
    professional football team; Manges, through a corporation, was the
    team’s principal owner.     The defense contends that the payments
    were partial satisfaction of a $70,000 debt that the Gunslingers
    corporation owed Richard.
    Appellants’ efforts to retain the lease to tract 350 seemed to
    bear fruit. On September 19, 1989, GLO staff geologist Tim Pittman
    mailed a letter to Jaffe’s Redfish Bay Operating Co.--the tract’s
    operator of record at the time--stating that the lease had been
    maintained.
    As an epilogue to the conspiracy, Manges discussed tract 350
    in two conversations the following spring with a longtime friend,
    Crandell Addington.    The two friends discussed how Manges had done
    his “little magic” to save the lease.      They specifically mentioned
    that documents were “fixed” and that Jack Giberson would not
    approve the lease unless Manges paid his son, Richard, $10,000.
    Addington   secretly    recorded   these   conversations,   which   were
    introduced at trial by the prosecution.
    5
    PROCEDURAL BACKGROUND
    Appellants and co-defendant McLester were charged in a three-
    count indictment filed on September 14, 1994, in United States
    District Court.
    The first count charged all four defendants with conspiracy to
    commit mail fraud and conspiracy to commit bribery.               The mail fraud
    conspiracy had two alleged goals.            Its first object was to deprive
    Texas citizens of money or property, i.e., the lease to tract 350
    and the additional royalties that the state would earn if the lease
    reverted and were rebid.             The second object of the mail fraud
    conspiracy was to deprive Texas citizens of their intangible right
    to the honest services of a government official, later identified
    as Jack Giberson.           
    18 U.S.C. §§ 371
     (conspiracy), 1341 (mail
    fraud),   1346      (mail   fraud    involving     honest   services),       &    666
    (bribery).
    Count two charged McLester, Myers, and Shanklin with mail
    fraud.      This substantive count incorporated the two theories
    underlying    the    mail    fraud    conspiracy     charged   in    count      one--
    deprivation of money or property and deprivation of the intangible
    right to honest government services.           The mailing alleged in count
    two was the September 19, 1989 letter from the GLO to Redfish Bay
    Operating    Co.    stating   that    the    lease   to   tract     350   had    been
    maintained.      
    18 U.S.C. §§ 1341
    , 1346, & 2 (aiding and abetting).
    Count three charged Manges alone with bribery.                   
    18 U.S.C. § 666
    (a)(2).
    Pursuant to a plea agreement, McLester pleaded guilty to count
    6
    one and testified against appellants at trial.               At the close of the
    evidence, the district court entered a judgment of acquittal for
    Manges on count three.      The court held the proof insufficient to
    establish that the GLO received more than $10,000 annually in
    federal aid, as required to support a federal bribery prosecution.
    See 
    18 U.S.C. § 666
    (b).      In its jury charge, the district court
    also deleted the conspiracy to commit bribery from count one.
    On March 10, 1995, after a joint trial, Manges was convicted
    of conspiracy, and Myers and Shanklin were convicted of both
    conspiracy and mail fraud.      As discussed below, appellants were
    sentenced at a hearing in district court on August 25, 1995.
    DISCUSSION
    I.    Appellant Shanklin’s Statute of Limitations Defense
    Shanklin claims that he was prosecuted in violation of the
    applicable five-year statute of limitations. See 
    18 U.S.C. § 3282
    .
    With respect to the conspiracy count only, we agree.              Our review is
    plenary.   United States v. Workinger, 
    90 F.3d 1409
    , 1412 (9th Cir.
    1996) (citation omitted).
    To satisfy the statute of limitations for mail fraud, the
    government must prove that the predicate mailing occurred in the
    five years before the indictment.              United States v. Ashdown, 
    509 F.2d 793
    , 798 (5th Cir.), cert. denied, 
    423 U.S. 829
    , 
    96 S.Ct. 48
    ,
    
    46 L.Ed.2d 47
     (1975).     To satisfy the statute for conspiracy, the
    government must prove that a conspirator committed an overt act in
    furtherance   of   the   conspiracy       in    the   five   years   before   the
    7
    indictment.     See Grunewald v. United States, 
    353 U.S. 391
    , 396-97,
    
    77 S.Ct. 963
    , 969-70, 
    1 L.Ed.2d 931
     (1957).
    Shanklin was indicted on September 14, 1994. Accordingly, the
    government was required to show that both the mailing element of
    the mail fraud count and at least one overt act in furtherance of
    the conspiracy occurred in a span of five years before that date.
    The government claims to have met this burden with respect to both
    offenses based on the September 19, 1989 letter from the GLO
    stating that the lease to tract 350 had been maintained.      Shanklin
    argues that the GLO letter cannot serve as the predicate for either
    crime, and that the government failed to prove any other mailing or
    overt act within the limitations period.
    A.   Mail Fraud
    Shanklin argues that the GLO letter cannot provide the basis
    for the mail fraud prosecution because the letter was not an
    “integral” part of the alleged scheme.         See United States v.
    Vontsteen, 
    872 F.2d 626
    , 628 & n.2 (5th Cir. 1989) (reversing mail
    fraud conviction because the mailed invoices were not “integral” to
    the   scheme)   (citation   omitted).   Shanklin   contends   that   the
    statutory period expired five years after the last relevant mailing
    mentioned in the indictment:      the submission of a false morning
    field report to the GLO on July 27, 1989.       In his view, the GLO
    letter of September 19 merely confirmed that the alleged scheme had
    been completed successfully.
    We observe at the outset that the mailing in a federal mail
    fraud prosecution need not be sent by the defendant or his co-
    8
    conspirator.    It may be sent by a victim of the plot or an innocent
    third party, so long as the mailing is “incident to an essential
    part of the scheme, . . . or a step in [the] plot.”            Schmuck v.
    United States, 
    489 U.S. 705
    , 710-11, 
    109 S.Ct. 1443
    , 1448, 
    103 L.Ed.2d 734
     (1989) (mailing element supplied by duped used-car
    retailers submitting title applications to state motor vehicles
    bureau).    See also United States v. Pepper, 
    51 F.3d 469
     (5th Cir.
    1995) (mailing element satisfied by defrauded investors’ mailing
    money to defendant).
    The success of the fraud alleged in this case depended upon an
    affirmative response from the GLO.         The scheme’s purpose was to
    secure from the state of Texas the continued right to exploit the
    mineral    resources   of   tract   350.    In   our   view,   a   written
    confirmation from the GLO was “integral” to the success of the
    scheme; it was a necessary step in the plot.
    Vontsteen, relied on by Shanklin, does not lead us to a
    different conclusion.       In Vontsteen we held that the mailing of
    invoices by the victims of a completed fraud could not satisfy the
    mailing element. However, we recognized that we might have reached
    the opposite conclusion had the invoices been “legally operative
    documents” that helped the defendant to complete the fraud.            The
    GLO letter was precisely the sort of “legally operative document”
    that we had in mind; it represented title to the mineral resources
    of tract 350.    As such, it was part and parcel of the fraudulent
    scheme.    The GLO letter thus satisfied the mailing element.         The
    government had five years from the mailing to indict Shanklin, and
    9
    it beat the deadline by less than a week.
    B.     Conspiracy
    Shanklin claims that the September 19, 1989 mailing by the GLO
    was not the overt act of a conspirator, and thus cannot be
    considered the last overt act of the conspiracy for limitations
    purposes.    The previous overt acts alleged by the government were
    Manges’ payment of $3,700 to Jack Giberson and Myers’ submission of
    a false affidavit to the GLO.   Both these events took place on July
    31, 1989--more than five years before Shanklin was indicted.
    Consequently, he contends that the conspiracy charge was untimely.
    The text of the federal conspiracy statute supports Shanklin’s
    argument.    It provides in part:
    If two or more persons conspire . . . to commit any
    offense against the United States, . . . and one or more
    of such persons do any act to effect the object of the
    conspiracy, each shall be fined under this title or
    imprisoned not more than five years, or both.
    
    18 U.S.C. § 371
    .   The statute thus explicitly provides that for the
    crime of conspiracy to be complete, one or more of the conspirators
    must have performed an overt act to bring about the object of the
    conspiracy.    This language cannot be stretched to include the
    posting of a letter by a non-conspirator.
    We have echoed the statutory text: a conspiracy conviction
    requires proof of “[t]he commission of at least one overt act by
    one of the conspirators within [the five-year statutory] period in
    furtherance of the conspiratorial agreement.”      United States v.
    Davis, 
    533 F.2d 921
    , 926 (5th Cir. 1976).
    As the Supreme Court has explained:
    10
    The function of the overt act requirement in a conspiracy
    prosecution is simply to manifest that the conspiracy is
    at work, and is neither a project still resting solely in
    the minds of the conspirators nor a fully completed
    operation no longer in existence.
    Yates v. United States, 
    354 U.S. 298
    , 334, 
    77 S.Ct. 1064
    , 1085, 
    1 L.Ed.2d 1356
       (1957)    (internal      citation     and    quotation    marks
    omitted).     In this case, the government failed to show that the
    conspiracy was still a going concern in the five years prior to the
    indictment.       Accordingly,    the      indictment    was    untimely,     and
    Shanklin, having preserved his objection, is entitled to reversal
    on Count One.3
    II.    The Prosecution’s Honest Services Theory
    The    indictment     alleged,   and   the   jury    was    instructed   to
    consider, a conspiracy and a fraudulent scheme with two objectives.
    The first goal was to obtain money or property through fraudulent
    means, in violation of 
    18 U.S.C. § 1341
    .          The second was to deprive
    Texas citizens of their right to the honest services of a state
    official, in violation of 
    18 U.S.C. §§ 1341
    , 1346.                 Because the
    jury convicted appellants by a general verdict, we cannot determine
    whether the jury embraced the first theory, the second, or both.
    Appellants contend that this ambiguity compels reversal of
    their convictions for three reasons.           First, they claim that the
    3
    Although Manges and Myers each executed a written waiver of
    his statute of limitations defense, Manges now seeks reversal of
    his convictions due to prejudicial pre-indictment delay. However,
    he does not contend that the government delayed in bad faith or to
    secure a tactical advantage. We are therefore bound to reject his
    claim by the rule established in United States v. Crouch, 
    84 F.3d 1497
    , 1500 (5th Cir. 1996) (en banc), cert. denied, ---U.S.---, 
    117 S.Ct. 736
    , 
    136 L.Ed.2d 676
     (1997).
    11
    prosecution’s “honest services” theory is legally invalid. Second,
    they claim that even if the theory is valid today, it did not
    become good law until the conspiracy was well under way, raising
    the possibility of an ex post facto violation.                Finally, they
    contend   that   the   evidence   was     insufficient   to   support   their
    convictions based on the honest services theory.
    A.     The Validity of the Honest Services Theory
    Appellants claim that the prosecution’s honest services theory
    is invalid as a matter of law, and that the jury may have convicted
    them on this unsound basis.       They demand that their convictions be
    vacated under the rationale of Griffin v. United States, 
    502 U.S. 46
    , 
    112 S.Ct. 466
    , 
    116 L.Ed.2d 371
     (1991).4        Because appellants did
    not raise this objection in the district court, the scope of our
    review is limited.        The issue is whether the district court
    committed plain error by submitting the honest services theory to
    the jury.    See generally FED. R. CRIM. P. 52(b); United States v.
    Olano, 
    507 U.S. 725
    , 
    113 S.Ct. 1770
    , 
    123 L.Ed.2d 508
     (1993); United
    States v. Calverley, 
    37 F.3d 160
    , 162-164 (5th Cir. 1994).
    Appellants’ attack on the validity of the honest services
    4
    In Griffin the petitioner was convicted of a dual-object
    conspiracy. The Supreme Court held that the insufficiency of proof
    with respect to one of the conspiracy’s objects did not render the
    conviction invalid. However, the Court distinguished legal error
    from factual insufficiency, explaining:
    When . . . jurors have been left the option of relying
    upon a legally inadequate theory, there is no reason to
    think that their own intelligence and expertise will save
    them from that error.      Quite the opposite is true,
    however, when they have been left the option of relying
    upon a factually inadequate theory, since jurors are well
    equipped to analyze the evidence.
    Griffin, 
    502 U.S. at 59
    , 
    112 S.Ct. at 474
     (citation omitted).
    12
    theory rests entirely on the panel opinion in United States v.
    Brumley (Brumley II), 
    79 F.3d 1430
     (5th Cir. 1996), opinion vacated
    and reh’g en banc granted, 
    91 F.3d 676
     (5th Cir. 1996).   The panel
    in Brumley II held that the federal mail fraud statute does not
    proscribe conduct which deprives the citizens of a state of the
    honest and impartial services of state officials.      Id. at 1440.
    This was the view of the Supreme Court prior to the passage, in
    1988, of 
    18 U.S.C. § 1346
    .   In McNally v. United States, 
    483 U.S. 350
    , 
    107 S.Ct. 2875
    , 
    97 L.Ed.2d 292
     (1987), the Court held that the
    mail fraud statute was limited in scope to the protection of
    property rights, and did not reach the intangible right to honest
    services.   
    Id. at 360
    , 
    107 S.Ct. at 2882
     (construing 
    18 U.S.C. § 1341
    ).   The Court in McNally perceived no constitutional obstacle
    to a broader statute, but stated: “If Congress desires to go
    further, it must speak more clearly than it has.”   
    483 U.S. at 360
    ,
    
    107 S.Ct. at 2882
    .
    Congress subsequently enacted Section 1346, which explicitly
    brings within the ambit of mail fraud “a scheme or artifice to
    deprive another of the intangible right of honest services.”   In a
    legislative history that has been described as “clear but sparse,”5
    members of Congress explained that the purpose of Section 1346 was
    to undo the Supreme Court’s statutory interpretation in McNally.
    In Brumley, the en banc court is considering whether the amended
    mail fraud statute reaches the deprivation of citizens’ right to
    5
    Geraldine Szott Moohr, Mail Fraud and the Intangible Rights
    Doctrine: Someone to Watch Over Us, 31 HARV. J. ON LEGIS. 153, 169
    (1994) (footnote omitted).
    13
    the honest services of public officials.
    We need not answer that question today.      It is enough to
    observe that numerous courts and commentators have interpreted
    Section 1346 as validating the honest services theory in the
    context of official corruption.       See, e.g., United States v.
    Paradies, 
    98 F.3d 1266
    , 1283 n.30 (11th Cir. 1996), pet. for cert.
    filed, 
    65 USLW 3599
     (Feb. 21, 1997) (No. 96-1346); United States v.
    Frega, 
    933 F.Supp. 1536
    , 1546-47 (S.D. Cal. 1996) (collecting
    cases).
    Based on the overwhelming weight of authority recognizing the
    validity of the honest government services theory, we hold that it
    was not plain error to submit that theory to the jury in this case.
    B.   Ex Post Facto
    Appellants correctly observe that even if the honest services
    theory is valid today, it did not become good law until November
    18, 1988, when Section 1346 took effect.    They complain that the
    jury may have relied on events predating Section 1346 to convict
    them on the honest services theory, in violation of the ex post
    facto clause.   U.S. CONST. art. I, § 9, cl. 3.
    Myers’ and Shanklin’s mail fraud convictions do not violate
    the ex post facto clause.    Mail fraud is a discrete offense; the
    crime is completed when the offending letter is mailed. See United
    States v. Pazos, 
    24 F.3d 660
    , 665 (5th Cir. 1994) (“Each separate
    use of the mails to further a scheme to defraud is a separate
    offense.” (citation omitted)). In this case, the predicate mailing
    occurred on September 19, 1989--ten months and one day after
    14
    Section 1346 took effect.           Reliance for this purpose on the GLO
    letter    is    not    inappropriate,    given    the    evidence   that    Myers
    submitted a false affidavit to the GLO on July 31, 1989, and that
    Shanklin falsified field reports as late as July 27, 1989.                   The
    Section 1341 scheme or artifice to defraud extended well beyond the
    effective date of Section 1346.
    Unlike mail fraud, conspiracy is a continuing offense. United
    States v. Bermea, 
    30 F.3d 1539
    , 1577 (5th Cir. 1994), cert. denied,
    ---U.S.---,      
    115 S.Ct. 1113
    ,   
    130 L.Ed.2d 1077
       (1995).     The
    conspiracy in this case straddled the effective date of Section
    1346.     Two of the alleged overt acts occurred before November 18,
    1988; most of appellants’ criminal conduct, including the two
    payments to Jack Giberson charged in the indictment as overt acts,
    occurred after that date.        Because there is “substantial” evidence
    that appellants participated in the conspiracy after Section 1346
    took effect, their prosecution under the honest services theory did
    not violate the ex post facto clause.            See Bermea, 
    30 F.3d at
    1577-
    78 (5th Cir. 1994) (citation omitted) (affirming sentence imposed
    under     increased     statutory    maximum     that    took    effect    during
    conspiracy).      Accord United States v. Garfinkel, 
    29 F.3d 1253
     (8th
    Cir. 1994) (construing 
    18 U.S.C. § 1346
    ).
    C.        Evidence Supporting the Honest Services Theory
    Among numerous evidentiary challenges, appellants claim that
    the facts adduced at trial were insufficient to support conviction
    on the honest services theory.          Because the jury may have relied on
    that theory, appellants urge reversal of their convictions.
    15
    There is no need for this court to decide whether the evidence
    adequately supports the prosecution’s honest services theory.                       The
    case was submitted to the jury on two alternative, legally valid
    theories.       If either theory was supported by sufficient evidence,
    we are bound to affirm.             Griffin, 
    502 U.S. at 56-60
    , 
    112 S.Ct. at 472-74
    , cited in United States v. Fisher, 
    22 F.3d 574
    , 576 (5th
    Cir. 1994).        As we discuss in the next section, the evidence was
    sufficient to support appellants’ convictions on the theory that
    they schemed to obtain money or property through false means.
    III. Sufficiency of the Evidence
    All three appellants claim, on numerous grounds, that the
    evidence was insufficient to support their convictions.                        Having
    reviewed all of appellants’ insufficiency claims, we will discuss
    only the least implausible; all are unpersuasive.
    A.        Count One: Conspiracy (Appellants Manges and Myers)6
    1.        Common Scheme
    Appellants claim that there was no proof of the “essential
    nature”       of   the    alleged      conspiracy.         Cf.    United   States    v.
    Rosenblatt,        
    554 F.2d 36
    ,    42   (2d    Cir.   1977)    (dismissing     the
    indictment for lack of proof that the defendants conspired to
    commit    the      same   fraud).       They      assert   that    the   evidence   was
    insufficient to show a coherent scheme to retain the lease to tract
    350, particularly in light of the inconsistent stories they told
    state officials to explain the tract’s failure to produce.
    6
    In light of our resolution of Shanklin’s statute of
    limitations argument, we need not address his claim that the
    evidence was insufficient to support his conspiracy conviction.
    16
    The fact that the conspirators changed their account in the
    face of official skepticism does not negate the existence of a
    conspiracy.    The government’s explanation makes more sense.                      The
    prosecution posited a conspiracy aimed at concealing appellants’
    failure to fulfill the conditions of their lease:
    Each co-conspirator had a role. McLester (who pleaded
    guilty) furnished phony reports of production.      Myers
    encouraged McLester’s falsities, and was instrumental in
    giving an aura of propriety to false documents that
    helped convince GLO that the lease terms had been
    satisfied.   Shanklin contributed to Myers’ deceit by
    preparing bogus reports and invoices reflecting work done
    on State Tract 350 in intervals of less than 60 days.
    . . . [A]nd Manges distributed the funds to help the co-
    conspirators.
    On   the   evidence,   a   rational     jury    could      have   found       beyond   a
    reasonable doubt that the appellants were engaged in a scheme to
    retain the lease by fraudulent means.
    2.    Intent:    Foreseeability of the Use of the Mails
    Conspiracy to commit mail fraud requires at least the level of
    intent necessary for mail fraud itself. United States v. Sneed, 
    63 F.3d 381
    , 385 (5th Cir. 1995) (internal citations omitted), cert.
    denied,    ---U.S.---,     
    116 S.Ct. 712
    ,    
    133 L.Ed.2d 667
        (1996).
    However, there is no specific intent requirement with respect to
    the mailing element of mail fraud.              United States v. Massey, 
    827 F.2d 995
    , 1002 (5th Cir. 1987).               The test is one of reasonable
    foreseeability:        the     prosecution      need       only   prove     that   the
    defendants    “engaged       in   a   scheme    to     defraud     in     which    they
    contemplated that the mails would likely be used.”                    
    Id.
    The mailing at issue is the September 19, 1989, letter from
    the GLO to Redfish Bay Operating Co., stating that the lease to
    17
    tract 350 had been maintained.        As the government points out, the
    object of the conspiracy was to obtain a clean bill of health for
    tract 350.    The GLO was in Austin; Myers and Jaffe were based in
    San   Antonio,   75   miles   away.        The   letter’s   author,   Pittman,
    testified that the GLO routinely transacted business by mail.
    Appellants contend that this evidence is not enough.               They
    argue that since none of them was employed by the land office, they
    could not have known that the GLO routinely transacted business
    through the mail. They also claim that the distance between Austin
    and San Antonio does not support the conclusion that the use of the
    mails was foreseeable, especially in light of their own habits of
    delivering documents by hand and traveling to Austin to do business
    with the GLO.
    Even if appellants’ argument were not implausible on its face,
    the only precedent they cite in its behalf is the first panel
    opinion in Brumley.     See United States v. Brumley (Brumley I), 
    59 F.3d 517
    , 520-22 (5th Cir. 1995), opinion withdrawn and superseded
    on reh’g, 
    79 F.3d 1430
    , 1432 (5th Cir. 1996), opinion vacated and
    reh’g en banc granted, 
    91 F.3d 676
     (5th Cir. 1996).               Appellants
    insist that the first Brumley opinion is still good law.              They are
    mistaken.7   See 5TH CIR. R. 41.3; United States v. Pineda-Ortuno, 952
    7
    In any event, the cases are easily distinguishable. Brumley
    involved wire transfers of money from Lufkin, Texas, to Beaumont,
    Texas.   The panel found it unforeseeable to the defendant that
    these transfers would be relayed through a Western Union computer
    in Missouri. Absent a foreseeable interstate wire transmission,
    the panel found that Brumley’s wire fraud conviction could not
    stand. Here, in contrast, all that is required is a foreseeable
    use of the mail. Compare 
    18 U.S.C. § 1341
     (mail fraud) with 
    18 U.S.C. § 1343
     (wire fraud).
    
    18 F.2d 98
    , 102 (5th Cir. 1992) (once rehearing en banc is granted,
    “panel decision is vacated and of no precedential value”).
    We conclude that the jury could have found beyond a reasonable
    doubt   that    use    of     the   mail    was       reasonably    foreseeable   to
    appellants.
    B.      Count Two:      Mail Fraud (Myers and Shanklin)
    1.      False and Fraudulent Reports
    Count     Two    is    based   in   part    on    evidence    that   appellants
    submitted false production reports, shut-in affidavits, and morning
    field reports.        Appellants contend that even if these documents
    were false, they could not have been fraudulent because they were
    not false with respect to “material matters.”                      They rely on the
    Supreme Court’s observation that to be “material,” a statement must
    tend naturally “to influence, or [be] capable of influencing, the
    decision of the decisionmaking body to which it is addressed.”
    United States v. Gaudin, 
    115 S.Ct. 2310
    , 2313, 
    132 L.Ed.2d 444
    (1995) (internal citation and quotation marks omitted).
    Assuming that materiality is an element of the mail fraud
    charged, it was satisfied in this case.                  It is self-evident that
    documents falsely informing the GLO that tract 350 had produced
    oil, or had been reworked at timely intervals, would tend to
    influence the GLO’s decision regarding the status of the lease.
    Appellants       insist    that     their    statements       were   immaterial
    because the amount of oil production falsely claimed was inadequate
    to maintain the lease.         In essence, they claim that their lies were
    not big enough.       They also claim that the lease had lapsed before
    19
    the false documents were submitted.          These arguments are belied by
    the GLO letter itself; the jury could have rationally concluded
    that appellants’ false statements influenced, or had a natural
    tendency to influence, the GLO’s determination that the lease had
    been maintained.
    2.     Mailing in Furtherance
    Myers and Shanklin claim that the evidence was insufficient to
    prove that either of them caused a mailing in furtherance of a
    scheme to defraud.      A defendant “causes” the mails to be used if he
    “does an act with knowledge that the use of the mails will follow
    in   the    ordinary   course   of   business,     or   where    such    use   can
    reasonably be foreseen, even though not actually intended . . . .”
    Sneed, 
    63 F.3d at
    385 n.4 (quoting Pereira v. United States, 
    347 U.S. 1
    , 8-9, 
    74 S.Ct. 358
    , 363, 
    98 L.Ed. 435
     (1954)).
    We find that the jury could rationally have concluded that
    Myers was the driving force behind the effort to retain the lease
    on tract 350; that he submitted a false affidavit to the GLO in a
    plot to obtain written confirmation that the lease was still good;
    and that Shanklin prepared false field reports to support Myers’
    affidavits.     It is reasonable to infer that the GLO would not have
    mailed the confirmation letter of September 19, 1989, but for
    appellants’ submission of these false documents.                The GLO mailing
    was reasonably foreseeable; indeed, it             was a desired result of
    appellants’ efforts.
    IV.    Motion to Sever
    Each    appellant   claims     that   the   district   court      committed
    20
    reversible error by refusing to try him individually.                 See FED. R.
    CRIM. P. 14.    We disagree.
    As a rule, defendants indicted together should be tried
    together,     particularly     when     they   are   charged     in    a    common
    conspiracy.    Zafiro v. United States, 
    506 U.S. 534
    , 537, 
    113 S.Ct. 933
    , 937, 
    122 L.Ed.2d 317
     (1993); United States v. Stotts, 
    792 F.2d 1318
    , 1321 (5th Cir. 1986); United States v. McCord, 
    33 F.3d 1434
    ,
    1451-52 (5th Cir. 1994), cert. denied, ---U.S.---, 
    115 S.Ct. 2558
    ,
    
    132 L.Ed.2d 812
     (1995).       Joint trials are not only more efficient
    than separate trials but also more just, for they tend to avert
    “the scandal and inequity of inconsistent verdicts.”                  Zafiro, 534
    U.S. at 537, 113 S.Ct. at 937.
    Where joinder is initially proper, we review the district
    court’s refusal to sever for abuse of discretion.              See FED. R. CRIM.
    P.   8(b);   McCord,   
    33 F.3d at 1452
       (quoting   United       States    v.
    Faulkner, 
    17 F.3d 745
    , 758 (5th Cir.), cert. denied, 
    115 S.Ct. 193
    ,
    
    130 L.Ed.2d 125
     (1994)).       To prevail, an appellant must show that:
    (1) the joint trial prejudiced him to such an extent that
    the district court could not provide adequate protection;
    and (2) the prejudice outweighed the government’s
    interest in economy of judicial administration.
    McCord, 
    33 F.3d at 1452
     (quoting United States v. DeVarona, 
    872 F.2d 114
    , 120-21 (5th Cir. 1989)).
    Appellants’ claims of prejudice rest in part on the faulty
    assumption that no conspiracy existed, or that none was proven.
    From that premise, each appellant complains that his trial was
    polluted with evidence of his co-defendants’ misdeeds.                     Separate
    trials would have obviated this taint.           Of course, we already have
    21
    determined that the evidence supported the jury’s determination
    that a conspiracy existed.         While the district court must guard
    against undue prejudice, it need not protect conspirators from
    evidence of their confederates’ acts in furtherance of their common
    illegal aims.
    Nevertheless, appellants raise several related contentions
    which do not rest entirely on their refusal to believe that the
    evidence of a conspiracy was sufficient.             We address these claims
    in turn.
    A.      Shanklin and Myers
    Shanklin and Myers complain that they were prejudiced by the
    evidence of Manges’ cash payments to Jack Giberson.               They assert,
    “No limiting instruction would suffice to cure such prejudice.” We
    disagree.     The district court specifically instructed the jury to
    reach     separate   decisions    on   the   guilt   or     innocence   of    each
    defendant, based on the evidence with respect to that defendant
    alone.8    Cautionary instructions of precisely this sort have been
    held “sufficient to cure any possibility of prejudice.” McCord, 
    33 F.3d at 1452
     (quoting Faulkner, 
    17 F.3d at 759
    ).
    Shanklin    and   Myers     further     claim   that   Manges   was     “very
    unpopular” in San Antonio, where the trial was held.              But there is
    8
    The district court instructed the jury:
    [T]he case of each defendant should be considered
    separately and individually. The fact that you may find
    one or more of the accused guilty or not guilty of any of
    the crimes charged should not control your verdict as to
    any other crime or any other defendant. You must give
    separate consideration to the evidence as to each
    defendant.
    22
    no hint in the record that Manges’ reputation in the community
    resulted in any prejudice to his co-defendants. Shanklin and Myers
    derive this argument from the transcript of voir dire, in which
    several      potential   jurors   admitting   having   formed     unfavorable
    impressions of Manges. Having scoured the record, we are satisfied
    that the district court removed any potential jurors whose negative
    impressions of Manges might have colored their consideration of the
    evidence.9
    Shanklin also claims that he was prejudiced by being tried
    jointly with Myers, whose role in the scheme was far greater than
    his   own.      We   have    observed   repeatedly   that   “a   quantitative
    disparity in the evidence is clearly insufficient in itself to
    justify severance.”         United States v. Pettigrew, 
    77 F.3d 1500
     (5th
    Cir. 1996) (internal quotation marks omitted).              See also United
    States v. Rocha, 
    916 F.2d 219
    , 228 (5th Cir. 1990), cert. denied,
    
    500 U.S. 934
    , 
    111 S.Ct. 2057
    , 
    114 L.Ed.2d 462
     (1991).
    The district court, through attentive management of voir dire
    and appropriate cautionary instructions to the jury, minimized any
    risk of undue prejudice to Shanklin and Myers.          Shanklin and Myers
    have failed to show that they were prejudiced “to such an extent
    that the district court could not provide adequate protection.”
    9
    See United States v. Harrelson, 
    754 F.2d 1153
    , 1175 (5th Cir.
    1985) (denying one defendant’s claim of prejudice based on her co-
    defendant’s loathsome reputation as a hired killer), cert. denied,
    
    474 U.S. 908
    , 
    106 S.Ct. 277
    , 
    88 L.Ed.2d 241
     (1985). Appellants’
    claim is particularly unpersuasive because Myers chose to do
    business with Manges, and Shanklin opted to falsify documents in
    Myers’ behalf. As we observed in Harrelson, “the circumstance that
    one has chosen odious associates seems a dubious sword.” 
    Id.
    23
    McCord, 33
     F.3d at 1452 (citation omitted).10
    B.     Manges
    Manges claims that he was prejudiced in several ways by the
    district court’s refusal to grant a severance.                First, Manges
    claims that he was denied the exculpatory testimony of Shanklin and
    Myers    because,    as   co-defendants,   they   exercised    their   Fifth
    Amendment right not to testify.       We do not agree.
    Shanklin’s pre-trial offer to testify on Manges’ behalf was
    conditioned upon a demand that he be tried first, and thus was not
    unequivocal, as required by the fourth prong of the Broussard test.
    See United States v. Broussard, 
    80 F.3d 1025
    , 1037 (5th Cir.) (to
    establish prejudice from joint trial, defendant must show that co-
    defendant would in fact testify if severance were granted), cert.
    denied, ---U.S.---, 
    117 S.Ct. 264
    , 
    136 L.Ed.2d 189
     (1996).11
    Second, Manges complains that the denial of his severance
    10
    Shanklin and Myers also claim that they suffered “prejudicial
    spillover” from the use of the Addington tapes as evidence against
    Manges on the dismissed bribery count. We reject this argument.
    The jury was specifically instructed not to consider the tapes as
    evidence against Shanklin and Myers.       We have held that “the
    pernicious effect [of spillover] . . . is best avoided by precise
    instructions to the jury on the admissibility and proper uses of
    the evidence introduced by the Government.” Harrelson, 
    754 F.2d at 1175
     (internal citation and quotation marks omitted).
    11
    On the last day of trial, outside the jury’s presence, Manges
    proposed to call both Myers and Shanklin as witnesses.         They
    indicated that if called, they would invoke their right not
    testify. The district court consequently refused to call them and
    denied Manges’ renewed motion for severance. This was not an abuse
    of discretion. “[T]he district court must balance any prejudice to
    the defendant against the court’s interest in judicial economy.”
    United States v. Lopez, 
    979 F.2d 1024
    , 1035 (5th Cir. 1992)
    (citation omitted), cert. denied, 
    508 U.S. 913
    , 
    113 S.Ct. 2349
    , 
    124 L.Ed.2d 258
     (1993). Given the late hour, the inefficiency would
    have been extreme; the testimony’s value was uncertain.
    24
    motion exposed the jury to prejudicial testimony that McLester had
    pleaded guilty in the alleged conspiracy.          Counsel for Myers had
    indicated that he would seek to impeach McLester’s credibility by
    eliciting the fact that he had pleaded guilty and was awaiting
    sentencing.     The   prosecution    thus   was   allowed   to   elicit   the
    information first.     Manges contends that at a separate trial, he
    would not have proffered evidence of McLester’s plea, and that
    consequently the prosecution would have been barred from doing so.
    Although   evidence    of   a    co-conspirator’s      conviction     is
    inadmissable as substantive proof of a defendant’s guilt, it is
    “admissible and commonly used for impeachment purposes.”             United
    States v. Leach, 
    918 F.2d 464
    , 467 & n.4 (5th Cir. 1990) (citations
    omitted), cert. denied, 
    501 U.S. 1207
    , 
    111 S.Ct. 2802
    , 
    115 L.Ed.2d 976
     (1991).     Leach recognized that the prosecution may elicit
    evidence of a co-conspirator’s conviction to “blunt[] the sword of
    anticipated impeachment by revealing the information first.”              Id.
    at 467 (internal citation and quotation marks omitted).            See also
    United States v. Valley, 
    928 F.2d 130
    , 133 (5th Cir. 1991).                In
    this case, the district court cautioned the jury that the fact that
    McLester had pleaded guilty related solely to his credibility, and
    was not proof of any other defendant’s guilt.          The court did not
    abuse its discretion by giving this instruction instead of granting
    the more extreme remedy of severance.
    We have reviewed Manges’ remaining contentions with respect to
    his severance motion.    We find them wholly meritless.
    V.   Jury Instructions
    25
    Appellants contend that reversal is warranted because the
    district court erred in instructing the jury.                     We review objected-
    to   jury    instructions       for    abuse      of    discretion,    affording     the
    district     court     “substantial        latitude”      to   fashion     its   charge.
    United States v. Gray, 
    96 F.3d 769
    , 775 (5th Cir. 1996), cert.
    denied, ---U.S.---, ---S.Ct.----, 
    1997 WL 70921
     (Mar. 17, 1997)
    (No. 96-7763); United States v. Storm, 
    36 F.3d 1289
    , 1294 (5th Cir.
    1994), cert. denied, ---U.S.---, 
    115 S.Ct. 1798
    , 
    131 L.Ed.2d 725
    (1995).      In the absence of a proper objection, we review for plain
    error.      See FED. R. CRIM. P. 30, 52(b); Gray, 
    96 F.3d at 775
    .
    A.      Constructive Amendment of the Indictment
    Appellants argue that by mishandling the jury charge, the
    district court constructively amended the indictment, in violation
    of   their    rights    under    the    Fifth      and    Sixth     Amendments.      See
    generally United States v. Holley, 
    23 F.3d 902
    , 912 (5th Cir.)
    (defining      constructive      amendment)            (citations    omitted),     cert.
    denied, ---U.S.---, 
    115 S.Ct. 635
    , 
    130 L.Ed.2d 542
     (1994); United
    States v. Arlen, 
    947 F.2d 139
    , 144 (5th Cir. 1991) (citation
    omitted), cert. denied, 
    503 U.S. 939
    , 
    112 S.Ct. 1480
    , 
    117 L.Ed.2d 623
     (1992).
    This     argument    rests      on    the    assertion        that   despite   the
    dismissal of the bribery count against Manges, the jury charge
    contained “language tracking the elements” of bribery, as defined
    in 
    18 U.S.C. § 666
    .        This assertion is entirely unsupported by the
    record.      In reality, the district court omitted any reference to
    the bribery statute.            The court simply permitted the jury to
    26
    consider two alleged cash payments to Jack Giberson as overt acts
    in   furtherance      of   the   conspiracy.       Contrary    to   appellants’
    contentions, the district court did not “broaden[] the possible
    bases       for   conviction     from    [those]    which    appeared   in   the
    indictment.” United States v. Miller, 
    471 U.S. 130
    , 138, 
    105 S.Ct. 1811
    , 1816, 
    85 L.Ed.2d 99
     (1985) (emphasis omitted).                Accordingly,
    there was no constructive amendment.
    B.      Dismissal of the Bribery Count
    Appellants also argue that the dismissal of the substantive
    bribery count renders their conspiracy convictions infirm.                   They
    reason that the jury may have convicted them of either conspiracy
    to commit mail fraud or conspiracy to commit bribery.                They assert
    that a conspiracy conviction premised on the target offense of
    bribery would be “improper” in light of Manges’ acquittal “on the
    facts and law of the substantive offense of bribery under § 666.”
    This argument is doubly flawed.             First, the jury could not
    possibly have convicted appellants of conspiracy to commit bribery.
    The district court carefully instructed the jury to consider only
    two offenses:       mail fraud, and conspiracy to commit mail fraud.           It
    is immaterial that one object of the alleged scheme, to deprive
    Texas citizens of their right to honest government services, bears
    a    passing      resemblance    to     bribery.    Second,    appellants     are
    grievously misinformed if they believe that they cannot properly be
    convicted of conspiracy once they or their co-defendant has been
    acquitted of a related substantive offense.                 To be convicted of
    conspiracy, defendants “need not . . . have committed the crime
    27
    that was its object.”            United States v. Duvall, 
    846 F.2d 966
    , 975
    (5th Cir. 1988) (citing Braverman v. United States, 
    317 U.S. 49
    ,
    53, 
    63 S.Ct. 99
    , 101, 
    87 L.Ed. 23
     (1942)).
    The district court held the evidence insufficient to submit
    the bribery count against Manges to the jury.                      This holding does
    not provide Manges and his co-defendants an avenue of escape from
    criminal liability for the distinct offense of conspiracy.
    C.        Good Faith Instruction
    Shanklin claims that the district court erred by refusing to
    instruct the jury that good faith is a defense.                      The government
    argues--and        Shanklin      does    not    dispute--that      the    plain   error
    standard        applies    because      of   Shanklin’s    failure       to   object    as
    required by FED. R. CRIM. P. 30.                See United States v. Adkins, 
    741 F.2d 744
    , 748 (5th Cir. 1984), cert. denied, 
    471 U.S. 1053
    , 
    105 S.Ct. 2113
    , 
    85 L.Ed.2d 478
     (1985) (applying plain error standard to
    jury instructions when requirements of Rule 30 are not met).
    The district court admonished the jury that before convicting
    any   defendant,          it   must   find     that   he   acted    “knowingly”        and
    “willfully.”        The court defined both these concepts in terms of
    intent.12 The jury that convicted Shanklin of mail fraud thus could
    not have believed that he participated in the scheme without the
    requisite criminal intent, i.e., in good faith.                    There was no need
    12
    Specifically, the court defined “knowingly” to mean
    “voluntarily and intentionally and not because of a mistake or
    [accident].” The court defined “willfully” to mean “voluntarily
    and purposely with the specific intent to do something the law
    forbids. That is to say, with bad purpose either to disobey or
    disregard the law.”
    28
    for a good-faith instruction, and consequently no error, plain or
    otherwise.    Storm, 
    36 F.3d at 1294
    .
    D.    Supplemental Pinkerton Instruction
    At the conclusion of closing arguments, the district court
    supplemented its jury charge with an instruction on co-conspirator
    liability.    See Pinkerton v. United States, 
    328 U.S. 640
    , 
    66 S.Ct. 1180
    , 
    90 L.Ed. 1489
     (1946).      Myers and Shanklin appeal their mail
    fraud convictions on the ground that this supplemental charge
    departed from the procedures prescribed in FED. R. CRIM. P. 30.
    Specifically, they argue that the post-argument instruction allowed
    the jury to consider a theory of criminal liability that defense
    counsel had no opportunity to rebut.        According to appellants, the
    instruction    thus   deprived    counsel     of   the   opportunity   to
    “intelligently argue the case to the jury.”        Cf. United States v.
    Mendoza, 
    473 F.2d 697
     (5th Cir. 1973).
    Appellants should have requested an opportunity to supplement
    their closing arguments in the district court.            They did not.
    Appellants cannot claim that they were shortchanged an opportunity
    to argue the Pinkerton issue when they never requested one.
    The remaining challenges to appellants’ convictions do not
    merit discussion.     We next turn to their sentences.
    VI.   Sentencing
    Appellants claim that the district court sentenced them under
    the wrong section of the United States Sentencing Guidelines and
    compounded its error by improperly enhancing their offense levels.
    We reject these arguments for the reasons that follow.
    29
    The applicable sentence range under the guidelines is based on
    two variables: the offense level, which reflects the gravity of the
    crime, and the defendant’s criminal history.           See U.S. SENTENCING
    GUIDELINES MANUAL, Ch. 5, Pt. A (Sentencing Table) (1994).             The
    guidelines provide that the base offense level for conspiracy in
    violation of 
    18 U.S.C. § 371
     is the same as the base offense level
    for the substantive offense that was the conspiracy’s object.
    U.S.S.G. § 2X1.1(a).       Applying this section, the district court
    assigned each appellant a base offense level of 10 pursuant to
    U.S.S.G. § 2C1.7, which governs frauds that deprive the public of
    its   intangible   right    to   the    honest   services   of   government
    officials.13   The district court then increased each appellant’s
    offense level by 8, reflecting the court’s finding that the fraud
    “involved[] giving a thing of value to a high level employee of the
    General Land Office . . . .”       U.S.S.G. § 2C1.7(b)(1)(B).14       Based
    on appellants’ total offense level of 18 and their insignificant
    13
    Each appellant was assigned the same offense level whether
    he was convicted of one count or two. In sentencing Myers and
    Shanklin, the district court grouped the conspiracy and mail fraud
    counts as components of a common criminal scheme or plan.      See
    U.S.S.G. § 3D1.2(b).    Consequently, neither Myers nor Shanklin
    suffered an incremental increase in punishment as a result of his
    second conviction.    See U.S.S.G. § 3D1.3(a).    Conversely, our
    reversal of Shanklin’s conspiracy conviction does not require
    resentencing on his mail fraud conviction; he would have received
    the same offense level had he been convicted of mail fraud alone.
    14
    The pertinent subsection states:
    If the offense involved an elected official or any
    official holding a high-level decision-making or
    sensitive position, increase by 8 levels.
    U.S.S.G. § 2C1.7(b)(1)(B).
    30
    criminal records,15 they were subject to a sentence range of 27 to
    33 months.    U.S.S.G., Ch. 5, Pt. A (Sentencing Table).
    The    court   sentenced   Manges     to   27   months   in    prison   for
    conspiracy.     Myers was sentenced to concurrent 30-month prison
    terms for conspiracy and mail fraud.            Shanklin was sentenced to
    concurrent    8-month   terms   for    conspiracy     and   mail    fraud;   the
    district court held that his minor role in the offense justified a
    downward departure from the applicable sentence range.
    These sentences must be upheld unless they were imposed in
    violation of law, resulted from an incorrect application of the
    guidelines, or departed unreasonably from the applicable sentence
    range.     United States v. Underwood, 
    61 F.3d 306
    , 308 (5th Cir.
    1995) (citing United States v. Matovsky, 
    935 F.2d 719
    , 721 (5th
    Cir. 1991) (citing 
    18 U.S.C. § 3742
    (e))).            We review the district
    court’s interpretation of the guidelines de novo and its underlying
    factual findings for clear error.           
    Id.
     (citing United States v.
    Brown, 
    7 F.3d 1155
    , 1159 (5th Cir. 1993)).
    Appellants claim that the district court erred by sentencing
    them as if they had been convicted of conspiring to commit a fraud
    involving public corruption.          In their view, because no one can
    tell whether the jury adopted the honest services theory, they
    should have been sentenced under the less onerous guideline for
    conspiring to defraud another of money or property.                See U.S.S.G.
    15
    Myers and Shanklin had no prior convictions. Manges was
    convicted of making false statements to the Small Business
    Administration with respect to an equipment purchase in 1959. The
    district court did not assign Manges any criminal history points
    based on this offense. See generally U.S.S.G., Ch. 4, Pt. A.
    31
    § 2F1.1 (base offense level of 6).
    Appellants recognize that the guidelines empower the district
    court to sentence them for the more serious of the two charged
    conspiracies, provided that the district court itself would have
    convicted them on that basis.            The guidelines provide that a
    defendant convicted of a multiple-object conspiracy count should be
    sentenced “as if the defendant had been convicted of a separate
    count of conspiracy for each offense that the defendant conspired
    to commit.”     U.S.S.G. § 1B1.2(d).       These hypothetical conspiracy
    convictions should be grouped according to Chapter 3, Part D of the
    guidelines, which governs multiple counts of conviction.             Id.,
    commentary, note 4; see also United States v. Fisher, 
    22 F.3d 574
    ,
    576 (5th Cir. 1994).        When multiple counts result from a common
    scheme, they are deemed a single group and are assigned the offense
    level for the most serious offense in the group.          Fisher, 
    22 F.3d at 576
    .
    However, the operation of Section 1B1.2(d) is restricted by
    its commentary, which cautions:
    Particular care must be taken in applying subsection (d)
    because there are cases in which the verdict or plea does
    not establish which offense(s) was the subject of the
    conspiracy. In such cases, subsection (d) should only be
    applied with respect to an object offense alleged in the
    conspiracy count if the court, were it sitting as a trier
    of fact, would convict the defendant of conspiring to
    commit that object offense.
    U.S.S.G. § 1B1.2(d), commentary, note 5.             The district court’s
    determination    of   the   conspiracy’s    object   offense   “should   be
    governed by a reasonable doubt standard.”         Fisher, 
    22 F.3d at 577
    (quoting U.S.S.G., app. C., amend. 75 (Nov. 1, 1989)).
    32
    The district court did not state whether it had concluded
    beyond a reasonable doubt that appellants were guilty of conspiring
    to commit mail fraud on the honest services theory.   Nevertheless,
    we believe that such a finding is implicit in the district court
    record. We have held that findings under Section 1B1.2(d) and note
    5 may be either express or implied.   See 
    id. at 576
     (5th Cir. 1994)
    (citing United State v. McKinley, 
    995 F.2d 1020
     (11th Cir. 1993),
    cert. denied, --- U.S. ---, 
    114 S.Ct. 1405
    , 
    128 L.Ed.2d 77
     (1994)).
    In the instant case, the district court held that the offense
    “involved[] giving a thing of value to a high level employee of the
    General Land Office . . . .”   This finding is clear evidence that
    in the view of the district court, the conspiracy at issue involved
    a deprivation of the public’s right to the honest services of a
    state government official.     Frauds involving high-level public
    officials are a subset of frauds involving public officials; the
    district court’s finding in support of the 8-level enhancement thus
    presupposes that appellants were guilty of conspiring to commit a
    public corruption fraud.16
    Finally, appellants claim that even if Section 2C1.7 applies,
    the district court erred by enhancing their offense level based on
    16
    Appellants also claim that Section 1B1.2(d) and its
    commentary are unconstitutional because they empower the district
    court to usurp the jury’s fact-finding role. See U.S. CONST. amend.
    VI.   We disagree, essentially for the reasons stated in United
    States v. Conley, 
    92 F.3d 157
     (3d Cir. 1996). “[T]here is no Sixth
    Amendment right to jury sentencing, even where the sentence turns
    on specific findings of fact.” 
    Id. at 166
     (quoting McMillan v.
    Pennsylvania, 
    477 U.S. 79
    , 92, 
    106 S.Ct. 2411
    , 2419, 
    91 L.Ed.2d 67
    (1986) (internal citation omitted)).     But see United States v.
    Bush, 
    70 F.3d 557
     (10th Cir. 1995) (procedure authorized by Section
    1B1.2(d) & note 5 violates Fifth and Sixth Amendments) (dicta).
    33
    the involvement of a high-level public official.               U.S.S.G. §
    2C1.7(b)(1)(B).   This argument rests on appellants’ contentions
    that the official, Jack Giberson, never retained any money in
    connection with the oil lease and never exercised his authority to
    benefit appellants’ interests.      This argument is untenable; the
    guidelines do not require proof that Giberson kept the money or
    wielded his influence corruptly. Enhancement is appropriate if the
    offense “involved . . . any official holding a high-level decision-
    making or sensitive position . . . .”      U.S.S.G. § 2C1.7(b)(1)(B).
    It is undisputed that Giberson was a high-level decision-making
    official, and the district court expressly found that the scheme
    “involved” him.   This finding is not clearly erroneous.
    CONCLUSION
    The judgment is REVERSED with respect to appellant Shanklin’s
    conspiracy   conviction,   and   count   one   against   him   is   hereby
    DISMISSED.   The judgment of the district court as to appellants’
    convictions and sentences is in all other respects AFFIRMED.
    34