United States v. McMahan , 394 F. App'x 453 ( 2010 )


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  •                                                                        FILED
    United States Court of Appeals
    Tenth Circuit
    September 2, 2010
    UNITED STATES COURT OF APPEALS
    Elisabeth A. Shumaker
    Clerk of Court
    TENTH CIRCUIT
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,                       No. 09-7007
    v.                                           (E.D. Oklahoma)
    JEFF MCMAHAN,                                (D.C. No. 6:08-CR-00012-JHP-1)
    Defendant-Appellant.
    ORDER AND JUDGMENT *
    Before BRISCOE, Chief Judge, HAWKINS ** and MURPHY, Circuit Judges.
    I. Introduction
    Jeff McMahan, the former Oklahoma State Auditor and Inspector, was
    convicted of one count of conspiracy in violation of 
    18 U.S.C. § 371
     (Count 1),
    and two counts of violating the Travel Act, 
    18 U.S.C. §§ 1952
     and 2 (Counts 8
    and 9). On appeal, McMahan argues: (1) the jury was improperly instructed on
    the elements of the charged Travel Act offenses and on the concept of deliberate
    *
    This order and judgment is not binding precedent except under the
    doctrines of law of the case, res judicata, and collateral estoppel. It may be cited,
    however, for its persuasive value consistent with Fed. R. App. P. 32.1 and 10th
    Cir. R. 32.1.
    **
    The Honorable Michael D. Hawkins, Senior Circuit Judge, U.S. Court of
    Appeals, Ninth Circuit, sitting by designation.
    ignorance; (2) his conviction of both the conspiracy offense and the Travel Act
    offenses resulted in constitutionally prohibited dual punishment; (3) the evidence
    was insufficient to support his convictions; (4) the district court improperly
    excluded evidence of his character; and (5) the district court abused its discretion
    in refusing to vary downward at sentencing. Exercising jurisdiction under 
    28 U.S.C. § 1291
     and § 3742, this court AFFIRMS McMahan’s convictions and
    sentence.
    II. Background
    McMahan was elected Oklahoma State Auditor in November 2002, replacing
    Clifton Scott, who had occupied the position for twenty years. The Oklahoma
    State Auditor’s office took over the regulation of the abstract industry in 1984
    during Scott’s tenure. Its jurisdiction continued until 2008, when the Oklahoma
    Legislature placed the industry under the control of an independent board. 
    Okla. Stat. tit. 1, § 22
    . Scott and Steve Phipps, who owned several abstract companies,
    both supported McMahan’s candidacy. Phipps, in turn, was a close associate of
    former Oklahoma State Senator Gene Stipe; Phipps and Stipe had been business
    partners for over 30 years and owned several abstracting companies across
    Oklahoma, many of which they operated through a jointly owned holding company
    called Phipps Enterprises, Incorporated (“PEI”).
    Phipps provided a total of $157,882 in financial assistance to McMahan’s
    2002 campaign. He directed $27,000 in cash contributions to McMahan (much of
    -2-
    which was funneled through McMahan’s wife), $77,600 in donations through
    straw donors, and $53,282 in-kind donations. The in-kind donations were in the
    form of radio jingles, campaign signs and crews, dinner theater bookings, and
    radio spots.
    After prevailing in a close election, McMahan continued to accept gifts from
    Phipps. For example, in 2003 and 2004, Phipps paid for guided fishing trips to
    Lake Texoma for McMahan and his son. Phipps also financed trips to New
    Orleans for McMahan and his wife in 2003 and 2004. During the New Orleans
    trips, Phipps bought a ring and matching pair of earrings for McMahan’s wife. In
    2004, Phipps gave McMahan $6500 in cash he needed to travel to the Democratic
    National Convention in Boston and to sponsor a meal for the Oklahoma delegation
    in Boston.
    In exchange for these gifts, Phipps periodically contacted McMahan for
    favors. For example, McMahan delayed an application by John Callaham to open
    an abstract company in Idabel, Oklahoma, that would have competed with one of
    Phipps’s businesses. According to Tim Arbaugh, the abstractor registrar who
    worked for both Scott and McMahan, McMahan’s “intent was to slow down the
    process of giving the permit . . . to try to prevent that application from ever
    succeeding so that Mr. Phipps wouldn’t have a competitor.”
    When Idabel’s state representative, Jerry Ellis, subsequently introduced
    legislation that would have effectively eliminated the abstracting industry in
    -3-
    Oklahoma, Phipps contacted McMahan and Arbaugh to plan a response. After
    speaking with Phipps, McMahan told Arbaugh there were “two things that are of
    concern here. One of them is that this is being done from Steve Phipps’s area, and
    Steve is concerned that perhaps part of the reason for it is that Mr. Ellis is doing
    this to soften the ground for Mr. Callaham’s application to come back into play.”
    To appease Phipps, McMahan directed Arbaugh to “get directly involved with Mr.
    Ellis to try and satisfy him in whatever way necessary to remove the bill.”
    Arbaugh subsequently negotiated an agreement to change the pricing system and
    cap prices on abstracts prepared by Southern Abstract in Idabel, the only abstract
    company in Ellis’s district. Ellis, in turn, withdrew his legislation.
    Phipps also called on McMahan when he needed help getting appropriations
    more directly from the state legislature to entities controlled by Phipps and Stipe.
    After Stipe pleaded guilty to charges of perjury, conspiracy to obstruct an FEC
    investigation, and conspiracy to violate the Federal Election Campaign Act, Phipps
    called McMahan to set up a meeting for him with the State Insurance Department
    to help him force Stipe to sell their jointly held abstracting business to Phipps.
    Phipps also met with McMahan and Arbaugh to secure a commitment from
    McMahan that he would pursue an administrative complaint against the entities
    jointly held by Phipps and Stipe to allow Phipps to force a favorable settlement
    -4-
    with Stipe. 1 McMahan subsequently filed the complaint, even though he had been
    informed by his own counsel that his office had no authority to file a complaint.
    After the entities filed a motion to dismiss, Phipps again contacted McMahan to
    tell him that he wanted him to deny the motion to dismiss and send the matter to a
    hearing examiner so that Phipps could keep pressure on Stipe to liquidate their
    partnership.
    In 2005, the FBI began investigating fraud allegations involving one of the
    entities owned by Phipps and Stipe, and the investigation eventually spread to
    their other businesses. Phipps and Arbaugh agreed to cooperate in the
    investigation, and, as a result, the investigation’s focus turned to others, including
    McMahan and his wife.
    In 2008, McMahan and his wife Lori McMahan were charged by indictment
    with one count of conspiracy in violation of 
    18 U.S.C. § 371
     (Count 1); six counts
    of mail fraud in violation of 
    18 U.S.C. §§ 1341
    , 1346 and 2 (Counts 2 through 7);
    and two counts of violations of the Travel Act, 
    18 U.S.C. §§ 1952
     and 2 (Counts 8
    and 9). To support the conspiracy and Travel Act offenses, the Indictment alleged
    McMahan, in his official capacity, granted the following favors to Phipps and his
    entities: (1) delaying an application for an abstracting license that, if granted,
    1
    In the administrative proceeding at issue, the auditor’s office files a
    complaint against the certificate of authority of an abstract company.
    Accordingly, in the present case, a complaint was filed against a number of
    abstract companies in which Stipe had an interest.
    -5-
    could have created competition for Phipps’s abstracting business; (2) helping
    discourage proposed legislation that would hurt the abstracting industry; (3) filing
    and refusing to dismiss an administrative complaint against the abstracting
    businesses owned by Phipps and Stipe; and (4) agreeing to retain Arbaugh as
    abstractor administrator.
    At the close of the government’s case-in-chief, the district court granted
    McMahan’s Rule 29 motion with respect to one of the mail-fraud counts, but
    denied it as to the remaining counts. McMahan’s defense at trial was that Phipps
    and Arbaugh used him as a bargaining chip to obtain leniency after Phipps’s
    criminal activities were uncovered by the FBI. McMahan testified he did not
    know of the existence of the conspiracy and denied he had ever corruptly accepted
    anything with the intent that his official action be influenced. Although the
    evidence against his wife was substantial, McMahan claimed he did not know
    about the cash she received from Phipps; that she lied to him about retaining the
    jewelry from Phipps; that he had no idea his campaign had accepted funds from
    Phipps through straw donors; and that although he and Phipps were friends, they
    did not discuss business. The jury, however, also heard evidence that the co-
    conspirators intentionally funneled contributions through McMahan’s wife and
    Arbaugh so that McMahan would not appear to be connected with Phipps.
    Further, the evidence also indicated McMahan was a diligent, detail-oriented
    auditor, and revealed the information he provided the FBI in three separate
    -6-
    interviews contained numerous inconsistencies regarding his level of knowledge
    of, and participation in, the conspiracy.
    The jury found both McMahan and his wife guilty of conspiracy and the
    Travel Act violations, but not guilty of mail fraud. The district court sentenced
    McMahan to sixty months’ imprisonment on Counts 1 and 8, to be served
    concurrently, and a term of thirty-seven months’ imprisonment on Count 9, to be
    served consecutively, for a total of ninety-seven months, the advisory Guidelines’
    minimum. On appeal, McMahan argues: (1) the jury was improperly instructed on
    the elements of the charged Travel Act offenses and the concept of deliberate
    ignorance; (2) his conviction of both the conspiracy offense and the Travel Act
    offenses resulted in constitutionally prohibited dual punishment; (3) the evidence
    was insufficient to support his convictions; (4) the district court improperly
    excluded evidence of his character; and (5) the district court abused its discretion
    in refusing to vary downward at sentencing.
    III. Analysis
    A.     Jury Instructions
    McMahan contends the jury instructions on the elements of the charged
    Travel Act offenses did not properly inform the jury of the elements of the crime,
    and that the deliberate indifference instruction was legally erroneous. This court
    reviews “de novo to determine the propriety of a jury instruction to which
    objection was made at trial, and for plain error where no objection was made.”
    -7-
    United States v. Pappert, 
    112 F.3d 1073
    , 1076 (10th Cir. 1997). “The appropriate
    standard of review for challenges to jury instructions is whether the jury,
    considering the instructions as a whole, was misled.” 
    Id.
     (quotation omitted).
    “The standard is not whether the instruction was faultless in every respect. Only
    where the reviewing court has substantial doubt that the jury was fairly guided will
    the judgment be disturbed.” United States v. Mullins, 
    4 F.3d 898
    , 900 (10th Cir.
    1993).
    McMahan did not object to the Travel Act instructions at trial. Accordingly,
    this court reviews them for plain error. The district court provided the elements of
    a Travel Act violation in Instruction Nos. 12 and 13. Instruction 12 recited the
    relevant statutory language of 
    18 U.S.C. § 1952
    (a)(3). Instruction 13 explained
    that the Travel Act:
    makes it a crime for anyone to use interstate travel to promote an
    unlawful activity as charged in the Indictment.
    To find the Defendants guilty of a Travel Act violation to
    promote state bribery, you must be convinced that the government has
    proved each of the following beyond a reasonable doubt:
    First:      The Defendants used or caused the use of interstate
    travel;
    Second:     with the intention to promote, manage, establish, carry
    on, or facilitate the promotion, management,
    establishment, or carrying on of the unlawful activity
    described in the indictment, that is acceptance of money
    or goods or a valuable thing with the intent to permit Jeff
    McMahan’s official action to be influenced; and
    Third:      After the use of the interstate travel, the Defendant acted,
    or attempted to act, in order to promote, manage,
    establish, carry on, or facilitate the promotion,
    -8-
    management, establishment or carrying on of the
    unlawful activity described in the indictment, that is, the
    acceptance of bribes.
    McMahan contends this instruction misled the jury by including language
    criminalizing “caus[ing] the use of interstate travel,” which was included to
    encompass the aiding and abetting statute, 
    18 U.S.C. § 2
    . McMahan argues this
    instruction was misleading as to him because he could not aid and abet himself in
    the unlawful activity of bribery of a public official. Further, McMahan argues the
    instruction was deficient for failing to list the elements of the state bribery
    offense, the predicate offense for McMahan’s Travel Act violations.
    McMahan’s first challenge, regarding the inclusion of the aiding and
    abetting language, is precluded by the invited error doctrine. McMahan’s
    proposed instruction on the Travel Act’s elements included the same language he
    now challenges on appeal. 2 Accordingly, if there was any error in the instruction’s
    “caused the use of interstate travel” language, that error was invited by McMahan
    and cannot be challenged on appeal. United States v. Visinaiz, 
    428 F.3d 1300
    ,
    1310-11 (10th Cir. 2005).
    Much of McMahan’s next challenge, regarding the elements of the state law
    bribery offense, is similarly precluded as invited error. McMahan requested an
    2
    McMahan’s proposed instruction required the jury to be convinced beyond
    a reasonable doubt that “[t]he defendants used or caused the use of interstate
    travel.”
    -9-
    instruction with the following summary of the state law offense: “Second: with
    intention to promote, manage, establish, carry on, or facilitate the promotion,
    management, establishment, or carrying on of unlawful activity described in the
    Indictment, that is acceptance of money or goods or a valuable thing with the
    specific intent to permit Jeff McMahan’s official action to be influenced.”
    McMahan’s proposed instruction did not list the elements of Oklahoma state-law
    bribery, did not include an element requiring the jury to find the bribery was “by
    an executive officer of a governmental unit,” 
    Okla. Stat. tit. 21, § 382
    , and did not
    feature an explanation of the concepts of “corrupt intent” or “quid pro quo.” As a
    result, McMahan’s challenges pertaining to these alleged errors in the district
    court’s instructions are precluded as invited error. Visinaiz, 
    428 F.3d at 1310-11
    .
    The district court, however, omitted the word “specific” from McMahan’s
    proposed instruction, a decision which he challenges on appeal and this court
    reviews for plain error because McMahan did not raise it before the district court.
    As noted, the jury was properly instructed to find McMahan guilty if it determined
    he used interstate travel to promote an unlawful activity, in this case bribery of a
    state officer in violation of Oklahoma law. McMahan advances no creditable
    argument as to why omission of the word “specific” from the instruction’s
    description of Oklahoma state-law bribery amounts to plain error. Indeed, the
    Oklahoma Uniform Jury Instructions recommend a jury be instructed, as it was
    here, to consider whether a defendant acted “with intent to permit his/her official
    -10-
    action to be influenced.” Okla. Uniform Jury Instructions, Crim.2d, § 3-16 (2009).
    Accordingly, the district court did not err at all in so instructing the jury.
    McMahan’s challenge to the jury instruction on the elements of the Travel Act
    violation therefore fails in its entirety.
    McMahan next argues the district court’s deliberate ignorance instruction
    was improper because it did not require the jury to find deliberate ignorance
    beyond a reasonable doubt, and because the instruction was inappropriate in the
    context of a conspiracy offense. The district court instructed the jury as follows:
    When the word “knowingly” is used in these instructions, it
    means that the act was done voluntarily and intentionally, and not
    because of mistake or accident. Although knowledge on the part of a
    defendant cannot be established merely by demonstrating that the
    defendant was negligent, careless, or foolish, knowledge can be
    inferred if the defendant deliberately blinded himself to the existence
    of a fact. Knowledge can be inferred if the defendant was aware of a
    high probability of the existence of the object of the
    conspiracy/scheme to defraud.
    Because McMahan objected to the instruction, this court reviews its propriety de
    novo. United States v. Espinoza, 
    244 F.3d 1234
    , 1241 (10th Cir. 2001).
    The district court instructed the jury to “consider the instructions as a
    whole” and not “single out one instruction alone as stating the law.” The jury
    instructions included a thorough definition of reasonable doubt, which stated
    “[t]he Government must prove each essential element of the offenses charged in
    the Indictment beyond a reasonable doubt.” Next, when listing the elements of
    conspiracy and violations of the Travel Act, the instructions reiterated it was
    -11-
    necessary for the jury to “be convinced that the government has proved each of the
    [elements] beyond a reasonable doubt.” Considering the instructions as a whole,
    and their repeated references to the reasonable doubt standard, this court does not
    harbor any doubt, and certainly not a “substantial doubt that the jury was fairly
    guided.” United States v. Wolny, 
    133 F.3d 758
    , 765 (10th Cir. 1993).
    McMahan next contends it was inappropriate to give the deliberate
    ignorance instruction in this case. In this circuit, “[t]he use of a deliberate
    ignorance instruction is appropriate only when evidence has been presented
    showing the defendant purposely contrived to avoid learning the truth.” United
    States v. Hilliard, 
    31 F.3d 1509
    , 1514 (10th Cir. 1994) (quotation omitted). In the
    present case, it was appropriate for the district court to give the deliberate
    ignorance instruction because the government presented direct evidence of
    McMahan’s willful ignorance. 3
    Despite this evidence, McMahan argues the instruction was improper,
    resting his argument entirely on a line of cases from the Second Circuit rejecting
    the use of deliberate ignorance instructions in conspiracy prosecutions. United
    States v. Scotti, 
    47 F.3d 1237
    , 1242 (2d Cir. 1995) (“[I]t is logically impossible for
    3
    FBI Special Agent Gary Graff testified that McMahan said in an interview
    that he did not know where his wife got $5000 cash to purchase signs for his
    campaign. Agent Graff testified McMahan “said he didn’t ask [his wife] about
    the cash because [he] didn’t want to know. He said that he had suspected that it
    might have come from Steve Phipps, but, again, he didn’t ask because he didn’t
    want to know.”
    -12-
    a defendant to intend and agree to join a conspiracy if he does not know that it
    exists.”); see also United States v. Ciambrone, 
    787 F.2d 799
    , 810 (2d Cir. 1986)
    (“Conscious avoidance of participating in a conspiracy and agreeing to be a
    member of a conspiracy are mutually exclusive concepts.”); United States v.
    Mankani, 
    738 F.2d 538
    , 546-47 (2d Cir. 1984) (concluding an agreement to
    conspire cannot be proved through deliberate ignorance). 4 Even under the
    Second’s Circuit’s rule, however, a deliberate ignorance instruction is proper when
    “knowledge of the fraudulent goals of a conspiracy” is at issue, as opposed to
    “knowing and intentional participation in the conspiracy.” United States v.
    Fletcher, 
    928 F.2d 495
    , 502 (2d Cir. 1991).
    The instruction and the evidence in this case presented the jury with the
    former, rather than the latter, scenario. The instruction stated “knowledge can be
    inferred if the defendant deliberately blinded himself to the existence of a fact.
    Knowledge can be inferred if the defendant was aware of a high probability of the
    4
    The Second Circuit’s approach has not been adopted by any other circuit,
    and has been explicitly rejected by several others. See, e.g., United States v.
    Wert-Ruiz, 
    228 F.3d 250
    , 255 n.3 (3d Cir. 2000) (rejecting Scotti and reaffirming
    the propriety of giving a deliberate ignorance instruction when “the jury had
    ample evidence with which to conclude that, at a minimum, [the defendant] had
    willfully blinded himself to the fact that a criminal conspiracy existed” (quotation
    omitted)); United States v. Brandon, 
    17 F.3d 409
    , 453 n.75 (1st Cir. 1994)
    (agreeing with the Seventh Circuit that “a willful blindness instruction can be
    permissible with respect to a conspiracy charge”); United States v. Diaz, 
    864 F.2d 544
    , 549 (7th Cir. 1988) (holding “contrary to the precedent in the Second
    Circuit, that [a deliberate ignorance] instruction is permissible with respect to a
    conspiracy charge” (citation omitted)).
    -13-
    existence of the object of the conspiracy/scheme to defraud.” Although the
    instruction on the elements of conspiracy required the jury find both that “the
    Defendants knew the essential objective of the conspiracy” and that “the
    Defendants knowingly and voluntarily participated [in the conspiracy],” there is no
    evidence indicating McMahan deliberately blinded himself to his participation in
    the conspiracy. Rather, the evidence indicated McMahan deliberately blinded
    himself to the object of the conspiracy—the generation of illegal campaign
    contributions. Thus, the instruction was proper even under the Second Circuit’s
    approach.
    B.     Merger of Conspiracy and Travel Act Offenses
    McMahan contends his convictions of both the Travel Act and the
    conspiracy offense resulted in constitutionally impermissible dual punishment,
    because those charges merge under Wharton’s Rule. 5 McMahan concedes he did
    not raise this issue below. Accordingly, this court reviews for plain error.
    Under Wharton’s Rule, “an agreement by two persons to commit a particular
    crime cannot be prosecuted as a conspiracy when the crime is of such a nature as
    to necessarily require the participation of two persons for its commission.”
    5
    “Wharton’s Rule owes its name to Francis Wharton, whose treatise on
    criminal law identified the doctrine and its fundamental rationale.” Iannelli v.
    United States, 
    420 U.S. 770
    , 773 (1975). McMahan is mistaken in framing this
    challenge as a double jeopardy claim. 
    Id. at 782
     (“[T]he broadly formulated
    Wharton’s Rule does not rest on principles of double jeopardy.”).
    -14-
    Iannelli v. United States, 
    420 U.S. 770
    , 781-82 (1975) (quotation omitted). While
    Wharton’s Rule is a “judicial presumption, to be applied in the absence of
    legislative intent to the contrary,” 
    id. at 782
    , the third-party exception “renders
    [the rule] inapplicable when the conspiracy involves the cooperation of a greater
    number of persons than is required for commission of the substantive offense,” 
    id. at 775
    ; see also Gebardi v. United States, 
    287 U.S. 112
    , 122 n.6 (1932) (observing
    that conspiracies are “deemed criminal [when they] contemplated the co-operation
    of a greater number of parties than were necessary to the commission of the
    principal offense”).
    Because the third-party exception to Wharton’s Rule applies in this case,
    this court need not decide whether the rule requires the merger of a Travel Act
    violation predicated on state-law bribery and conspiracy to commit that same
    Travel Act violation. The conspiracy charged here involved a number of persons
    other than McMahan and Phipps, including McMahan’s wife and two unindicted
    co-conspirators. As a result, Wharton’s Rule is inapplicable.
    C.     Sufficiency of the Evidence
    McMahan asserts the evidence was insufficient to prove either a conspiracy
    to violate the Travel Act or a violation of the Travel Act beyond a reasonable
    doubt. In reviewing the sufficiency of the evidence, this court reviews the record
    de novo to determine whether, viewing the evidence in the light most favorable to
    the government, any rational trier of fact could have found McMahan guilty of the
    -15-
    crime beyond a reasonable doubt. United States v. Wood, 
    207 F.3d 1222
    , 1228
    (10th Cir. 2000).
    1.     Travel Act
    The Travel Act makes it a crime to “travel[] in interstate or foreign
    commerce or use[] the mail or any facility in interstate or foreign commerce, with
    intent to . . . promote, manage, establish, carry on, or facilitate the promotion,
    management, establishment, or carrying on, of any unlawful activity.” 
    18 U.S.C. § 1952
    . The Travel Act’s definition of “unlawful activity” includes “bribery . . .
    in violation of the laws of the State in which committed.” 
    Id.
     § 1952(b). An
    actual violation of state law is not an element of the Travel Act. United States v.
    Welch, 
    327 F.3d 1081
    , 1092 (10th Cir. 2003). Rather, “an individual may violate
    the Travel Act simply by attempting to perform a specified ‘unlawful act’ so long
    as that individual has the requisite intent required by the ‘unlawful act.’” 
    Id.
    McMahan argues his Travel Act convictions should be vacated because the
    government’s evidence was insufficient to prove he acted with corrupt intent
    required under Oklahoma law. Viewed in the light most favorable to the
    government, the evidence was sufficient to prove McMahan used interstate
    facilities with the intent to promote bribery in violation of Oklahoma law. The
    evidence at trial was sufficient for a reasonable jury to find that McMahan
    accepted money, as well as other in-kind contributions, from Phipps with the
    intent to allow his official action to be influenced. The jury heard evidence that
    -16-
    Phipps underwrote a sizeable percentage of McMahan’s 2002 campaign, funded
    several of McMahan’s trips, and bestowed a variety of other gifts on the
    McMahans. Further, the evidence also revealed that in return for Phipps’s
    contributions, McMahan provided several favors to Phipps in his official capacity
    as state auditor, including delaying a potential competitor’s application to open an
    abstract company; working to defeat legislation aimed at eliminating the
    abstracting industry; helping Phipps funnel state appropriations to his companies
    more directly; and filing an action against the entities owned by Phipps and Stipe
    to help Phipps put pressure on Stipe to liquidate their partnership. This evidence
    was sufficient for a reasonable jury to find that McMahan accepted bribes from
    Phipps with the intent to allow his official action to be influenced. Accordingly,
    there was sufficient evidence to support McMahan’s Travel Act convictions.
    2.    Conspiracy
    McMahan also argues there was no evidence he expressly or impliedly
    agreed to or participated in a conspiracy to violate the Travel Act. “To convict a
    defendant under the general conspiracy statute, 
    18 U.S.C. § 371
    , the government
    must prove the following elements beyond a reasonable doubt: (1) an agreement
    with another person to violate the law, (2) knowledge of the essential objectives of
    the conspiracy, (3) knowing and voluntary involvement, and (4) interdependence
    among the alleged conspirators.” United States v. Wardell, 
    591 F.3d 1279
    , 1287
    (10th Cir. 2009) (quotation omitted). An agreement may be express or implied,
    -17-
    and “may be inferred entirely from circumstantial evidence.” United States v.
    Whitney, 
    229 F.3d 1296
    , 1301 (10th Cir. 2000). “Relevant circumstantial evidence
    includes: the joint appearance of defendants at transactions and negotiations in
    furtherance of the conspiracy; the relationship among codefendants; mutual
    representations of defendants to third parties; and other evidence suggesting unity
    of purpose or common design and understanding among conspirators to
    accomplish the objects of the conspiracy.” Wardell, 591 F.3d at 1287 (quotations
    omitted). “The touchstone of the analysis, therefore, is whether the circumstances,
    acts, and conduct of the parties are of such a character that the minds of reasonable
    men may conclude therefrom that an unlawful agreement exists.” Id. (quotation
    omitted).
    The government presented sufficient evidence to allow the jury to
    reasonably conclude there was an unlawful agreement between Phipps, McMahan,
    and the other co-conspirators to violate the Travel Act. The trial record contains a
    plethora of “evidence suggesting unity of purpose or common design and
    understanding among conspirators to accomplish the objects of the conspiracy.”
    Wardell, 591 F.3d at 1287 (quotations omitted). The fact that the evidence showed
    McMahan’s co-conspirators sought to shield McMahan from liability by funneling
    Phipps’s contributions and requests through McMahan’s wife and Arbaugh, does
    not make the jury’s determination unreasonable. Rather, that fact, coupled with
    McMahan’s level of expertise as an auditor and his inconsistent statements to the
    -18-
    FBI, supports the reasonableness of the jury’s determination that an unlawful
    agreement existed among the co-conspirators in this case. Viewed in the light
    most favorable to the government, the evidence was therefore sufficient to support
    McMahan’s conspiracy conviction.
    D.     Character Evidence
    McMahan further argues the district court erred in refusing to allow him to
    present specific instances of conduct to prove his character pursuant to Fed. R.
    Evid. 405(b). A decision to exclude evidence at trial is reviewed for an abuse of
    discretion. United States v. Atencio, 
    435 F.3d 1222
    , 1235 (10th Cir. 2006). “A
    district court by definition abuses its discretion when it makes an error of law.”
    United States v. Yarbrough, 
    527 F.3d 1092
    , 1101 (10th Cir. 2008) (quotation
    omitted).
    Fed. R. Evid. 404(a)(1) makes admissible “evidence of a pertinent trait of
    character offered by an accused.” This court has recognized that when the issue
    before the jury is whether the defendant acted with a prohibited state of mind, such
    character evidence “is not only relevant, but also vitally important.” Yarbrough,
    
    527 F.3d at 1101
    ; United States v. Petersen, 
    268 F.2d 87
    , 88 (10th Cir. 1959)
    (noting the importance of allowing character evidence when a defendant’s “sole
    defense is lack of wilful intent”). Under Rule 405(b), however, a defendant may
    only present evidence of specific instances of conduct “[i]n cases in which
    character or a trait of character of a person is an essential element of a charge,
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    claim, or defense.” Fed. R. Evid. § 405(b); United States v. Talamante, 
    981 F.2d 1153
    , 1156 (10th Cir. 1992) (“Under Rule 405, a party may present testimony
    concerning specific instances of conduct only when character is in issue in the
    strict sense.” (quotation omitted)). Nevertheless, “[w]hen character evidence is
    used circumstantially to create an inference that a person acted in conformity with
    his or her character, Rule 405 allows proof of character only by reputation and
    opinion.” Talamante, 
    981 F.2d at 1156
    ; see also Fed. R. Evid. 405, advisory
    committee’s note (differentiating between cases “[w]hen character is used
    circumstantially” and those “in which character is, in the strict sense, in issue and
    hence deserving of a searching inquiry”). Accordingly, Rule 405(b) forecloses a
    defendant from introducing evidence of specific instances of conduct to
    circumstantially prove their character was inconsistent with criminal intent.
    United States v. Marrero, 
    904 F.2d 251
    , 259-60 (5th Cir. 1990) (holding a
    defendant may not use specific instances of conduct circumstantially to prove lack
    of intent).
    During trial, McMahan attempted to elicit testimony from witnesses
    regarding specific instances when, inter alia, he refused to accept a questionable
    campaign contribution, and did not provide favorable treatment to Phipps. Each
    time, the district court correctly determined that although McMahan was entitled
    to present character evidence, he could not do so by offering evidence of specific
    instances of his conduct. Yarborough does not stand for the proposition that such
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    evidence is admissible in every case in which the defendant presents a defense
    based solely upon his lack of criminal intent. Rather, Yarborough addresses only
    whether character evidence is admissible under Rule 404(a)(1), not whether a
    defendant may prove character by presenting specific instances of conduct under
    Rule 405(b). 
    527 F.3d at 1100-01
    . Regardless of how central McMahan perceives
    proving his character to be to his defense, his attempt to employ evidence of
    specific instances of prior conduct to circumstantially prove his lack of intent to
    commit state-law bribery is prohibited by Rule 405(b). Furthermore, McMahan’s
    character is not an essential element of either his Travel Act or conspiracy
    convictions. Finally, McMahan did not employ a defense, such as entrapment, 6
    which places character “in issue in the strict sense.” Talamante, 
    981 F.2d at 1156
    (quotations omitted). Accordingly, the district court did not abuse its discretion in
    limiting McMahan to reputation and opinion character evidence.
    6
    Unlike McMahan’s defense, which sought to introduce evidence of
    specific instances of prior conduct to circumstantially disprove his criminal
    intent, an entrapment defense actually turns on a trait of character: whether a
    defendant was predisposed to committing a particular crime. See, e.g., United
    States v. Franco, 
    484 F.3d 347
    , 352 (6th Cir. 2007) (“Because predisposition is
    relevant to entrapment, such character evidence was an essential element of
    [defendant’s] defense, and therefore, these specific instances of his conduct were
    admissible.”); United States v. Mendoza-Prado, 
    314 F.3d 1099
    , 1103 (9th Cir.
    2002) (noting “[t]he character of the defendant [asserting entrapment defense] is
    one of the elements—indeed, it is an essential element—to be considered in
    determining predisposition”).
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    E.     Sentencing Variance
    Finally, McMahan argues the district court abused its discretion in deciding
    the factors provided in 
    18 U.S.C. § 3553
    (a) weighed against a downward variance.
    Following United States v. Booker, 
    543 U.S. 220
     (2005), this court reviews all
    sentences for reasonableness under an abuse of discretion standard. See Rita v.
    United States, 
    551 U.S. 338
    , 361 (2007); United States v. Smart, 
    518 F.3d 800
    ,
    805 (10th Cir. 2008) (“[W]e now review all sentences . . . whether inside, just
    outside, or significantly outside the Guidelines range—under a deferential abuse-
    of-discretion standard.” (quotation omitted)).
    On appeal, McMahan asserts the advisory Guidelines range overstated the
    seriousness of his offense, and the district court abused its discretion by refusing
    to remedy the disparity between his sentence and those given to co-conspirators
    Phipps and Arbaugh. As noted by the district court, this court has held “disparate
    sentences are allowed where the disparity is explicable by the facts on the record.”
    United States v. Davis, 
    437 F.3d 989
    , 997 (10th Cir. 2006) (quotation omitted).
    Further, we have also held a “decision to accept responsibility and assist the
    government does not create an unwarranted disparity under § 3553(a)(6).” United
    States v. Haley, 
    529 F.3d 1308
    , 1312 (10th Cir. 2008). The disparity between
    McMahan’s sentence and those given to Phipps and Arbaugh is readily explicable
    by the facts: unlike McMahan, Phipps and Arbaugh accepted responsibility for
    their actions and cooperated with the government’s investigation. This
    -22-
    cooperation led to guilty pleas by Mike Mass and Francis Stipe, as well as the
    convictions of McMahan and his wife. In light of these differences, McMahan
    cannot demonstrate that the district court’s refusal to grant a downward variance in
    this case represented an abuse of discretion.
    IV. Conclusion
    For the foregoing reasons, McMahan’s convictions and sentence are
    AFFIRMED.
    ENTERED FOR THE COURT
    Michael R. Murphy
    Circuit Judge
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