United States v. Robert Kahre ( 2013 )


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  •                 FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    UNITED STATES OF AMERICA,             No. 09-10471
    Plaintiff-Appellee,
    D.C. No.
    v.                    2:05-cr-00121-
    DAE-RJJ-1
    ROBERT DAVID KAHRE, AKA Robert
    D. Kahre,
    Defendant-Appellant.
    UNITED STATES OF AMERICA,             No. 09-10528
    Plaintiff-Appellee,
    D.C. No.
    v.                    2:05-cr-00121-
    DAE-RJJ-11
    LORI A. KAHRE, AKA Donna Hall,
    Defendant-Appellant.
    UNITED STATES OF AMERICA,             No. 09-10529
    Plaintiff-Appellee,
    D.C. No.
    v.                    2:05-cr-00121-
    DAE-RJJ-12
    ALEXANDER C. LOGLIA,
    Defendant-Appellant.
    OPINION
    2             UNITED STATES V. KAHRE
    Appeal from the United States District Court
    for the District of Nevada
    David A. Ezra, District Judge, Presiding
    Argued and Submitted
    June 11, 2012—San Francisco, California
    Filed December 5, 2013
    Before: Proctor Hug, Jr., Johnnie B. Rawlinson,
    and Sandra S. Ikuta, Circuit Judges.
    Per Curiam Opinion
    UNITED STATES V. KAHRE                            3
    SUMMARY*
    Criminal Law
    The panel affirmed three defendants’ convictions and one
    defendant’s sentence for criminal tax offenses arising from
    their use of gold and silver coins to pay wages and thus avoid
    the reporting of payroll and income taxes.
    Rejecting the defendants’ contention that dismissal of the
    indictments was warranted, the panel held that the defendants
    had sufficient notice of the illegality of relying on the face
    value of coins to avoid paying taxes.
    The panel held that the district court did not abuse its
    discretion in denying the defendants’ motions to disqualify
    the prosecutor due to his status as a defendant in a Bivens
    lawsuit filed by defendants Robert and Lori Kahre. The panel
    held that the defendants failed to present clear and convincing
    evidence of a conflict.
    The panel held that the district court properly denied as
    moot Robert’s initial motion to suppress because none of the
    seized evidence was introduced at trial. The panel held
    alternatively that Robert’s arrest and the corresponding search
    were legally conducted pursuant to a state bench warrant.
    The panel held that the district court correctly denied
    Robert’s subsequent suppression motion because the warrants
    incorporated the accompanying affidavit, which possessed the
    requisite specificity limiting the agents’ discretion.
    *
    This summary constitutes no part of the opinion of the court. It has
    been prepared by court staff for the convenience of the reader.
    4                UNITED STATES V. KAHRE
    The panel held that the district court did not abuse its
    discretion in excluding evidence challenging the legal import
    of its ruling that gold and silver coins used to pay wages were
    to be assessed at fair market value for tax purposes. The
    panel held that the district court correctly recognized that the
    coins were taxable as property based on their fair market
    value.
    The panel held that the district court did not commit
    reversible error in excluding testimony of the defendants’
    contemporaneous statements concerning their tax theories.
    The panel explained that in each instance the exclusion was
    neither an abuse of discretion nor prejudicial, and held that
    the district court acted within its discretion when it excluded,
    as irrelevant and prejudicial, evidence of the federal agents’
    use of force during execution of the search warrants. The
    panel held that the district court did not engage in any
    misconduct warranting a new trial.
    The panel held that the district court’s calculation of
    Robert’s tax liability at sentencing and the corresponding
    restitution amount was supported by the evidence presented
    at trial and the jury’s findings, that an enhancement for
    obstruction of justice and the denial of a downward
    adjustment for acceptance of responsibility were consistent
    with the historical record, and that Robert’s below-guidelines
    sentence was reasonable and was not disproportionately
    severe.
    UNITED STATES V. KAHRE                         5
    COUNSEL
    Michael K. Powell and Michael J. Kennedy (argued),
    Assistant Federal Public Defenders, Reno, Nevada, for
    Appellant Lori A. Kahre.
    Lisa A. Rasmussen, Las Vegas, Nevada, for Appellant Robert
    D. Kahre.
    Joel F. Hansen, Hansen Rasmussen, Las Vegas, Nevada, for
    Appellant Alexander C. Loglia.
    Gregory Victor Davis, Mark S. Determan (argued),
    Department of Justice, Washington, D.C., for Appellee
    United States.
    OPINION
    PER CURIAM:
    Appellants Robert Kahre (Kahre), Lori Kahre (Lori) and
    Alexander Loglia (Loglia) challenge their convictions for
    various criminal tax offenses arising from their use of gold
    and silver coins to pay wages and thus avoid the reporting of
    payroll and income taxes due. Appellants contend that
    dismissal of the indictments was warranted because
    Appellants lacked the requisite notice that their conduct
    violated applicable tax laws. Appellants also assert that a
    new trial was in order because the prosecutor should have
    been disqualified due to his status as a defendant in a Bivens1
    1
    Bivens v. Six Unknown Named Agents of Fed. Bureau of Narcotics,
    
    403 U.S. 388
     (1971).
    6                   UNITED STATES V. KAHRE
    lawsuit filed by the Kahres, and because the district court’s
    prejudicial conduct and erroneous evidentiary rulings
    deprived them of a fair trial. In addition, Robert Kahre
    challenges the district court’s denial of his motions to
    suppress and the sentence imposed. We affirm Appellants’
    convictions and Kahre’s sentence.
    I. BACKGROUND
    A. Third Superseding Indictment (Indictment)2
    The Indictment alleged that Appellants engaged in a
    conspiracy to avoid the payment of payroll and income taxes
    by utilizing a payroll system pursuant to which employees
    received their wages in gold and silver coins, which were
    later exchanged for cash. According to the Indictment, “the
    face amount of the coins was one-eighth of the amount of pay
    that the employee actually earned and received in the
    envelope of cash[.]” The Indictment alleged that Appellants
    failed to withhold the required federal income taxes, medicaid
    taxes, and social security taxes from the employees’ wages,
    and that Appellants created false invoices to conceal the
    payroll expenses. The Indictment also alleged that Kahre
    marketed the payroll service to other contractors and charged
    an administrative fee for use of the payroll service.
    The Indictment charged all three defendants with one
    count of conspiracy in violation of 
    18 U.S.C. § 371
    , and one
    count of attempting to interfere with the administration of
    internal revenue laws in violation of 
    26 U.S.C. § 7212
    (a).
    Robert and Lori Kahre were charged with an additional count
    2
    The Third Superseding Indictment was the indictment in effect at the
    time of the trial at issue in this appeal.
    UNITED STATES V. KAHRE                     7
    of attempting to interfere with the administration of internal
    revenue laws in violation of 
    26 U.S.C. § 7212
    (a).
    The Indictment charged Robert Kahre with forty-eight
    counts of failure to pay employment taxes in violation of
    
    26 U.S.C. § 7202
    ; four counts of attempting to evade or
    defeat taxes in violation of 
    26 U.S.C. § 7201
    ; and one count
    of wire fraud in violation of 
    18 U.S.C. § 1343
    .
    The Indictment charged Lori Kahre with one count of
    making false statements to a bank in violation of 
    18 U.S.C. § 1014
    , and eight counts of attempting to evade or defeat
    taxes in violation of 
    26 U.S.C. § 7201
    .
    Finally, the Indictment charged Loglia with one count of
    filing false income tax returns in violation of 
    26 U.S.C. § 7206
    (1), and ten counts of attempting to evade or defeat
    taxes in violation of 
    26 U.S.C. § 7201
    .
    B. Pretrial Motions
    1. Kahre’s Motions To Suppress
    In his search warrant affidavit, Internal Revenue Service
    (IRS) Special Agent Jared Halper observed that, although
    Kahre’s businesses were generating significant revenues,
    Kahre had not filed business tax returns or employment taxes
    since the early 1990s. Kahre also had not filed individual tax
    returns since 1991.
    Agent Halper averred that Kahre leased employees to
    various contractors, and withdrew cash from Bank of the
    West for the payroll. According to Agent Halper, Kahre
    withdrew $24,096,012 in cash between January 17, 2002, and
    8                UNITED STATES V. KAHRE
    October 31, 2002. Kahre’s employees collected their wages
    at a warehouse located at 6270 Kimberly Avenue in Las
    Vegas. The employees received nominal amounts of gold
    certificates or gold chips, which they immediately exchanged
    for envelopes of cash. Kahre allegedly withheld “sixty
    percent of the employees’ payroll. . . .”
    Based on Kahre’s conduct, Agent Halper stated that there
    was probable cause to believe that Kahre was engaged in a
    conspiracy to evade taxes and to interfere with the
    administration of the tax laws by the IRS. Agent Halper’s
    affidavit reflected that evidence of Kahre’s criminal activities
    could be found at the 6270 Kimberly Avenue, 6295 Grand
    Canyon, and 1555 Bledsoe Lane addresses (The Kimberly,
    Grand Canyon, and Bledsoe properties).
    In his declaration, Agent Halper related that IRS agents
    reviewed the search warrant affidavit prior to the searches.
    Kahre was subsequently arrested at Bank of the West
    pursuant to a state bench warrant for failure to appear, and the
    agents seized $230,913 in cash, which was provided to the
    IRS to satisfy Kahre’s “unpaid federal income tax liabilities.”
    According to Agent Halper, Kahre had unpaid tax
    assessments of approximately $2,000,000.
    The district court ruled that Kahre’s motion to suppress
    evidence seized when Kahre was arrested at Bank of the West
    was moot because the seized evidence would not be used at
    trial. The district court also determined that the government
    was not required to return the cash seized from Kahre because
    it was used to offset Kahre’s tax liabilities.
    The district court granted in part and denied in part
    Kahre’s amended motions to suppress evidence seized from
    UNITED STATES V. KAHRE                      9
    the Kimberly, Bledsoe, and Grand Canyon properties.
    Because Kahre was not present during the execution of the
    search warrants, the district court held that Kahre lacked
    standing to challenge the manner in which the search
    warrants were executed. The district court concluded that,
    because the search warrant properly incorporated the search
    warrant affidavit, the warrant was not overly broad. The
    district court also held that the agents properly seized gold
    and silver coins relating to Kahre’s payroll scheme.
    However, the district court granted Kahre’s motion to
    suppress information and documents that were unrelated to
    the time periods specified in the warrants.
    2. Appellants’ Motions To Disqualify the Prosecutor
    For Conflict of Interest
    On October 30, 2003, several plaintiffs, including the
    Kahres, filed a Bivens action against the federal prosecutor,
    as well as other federal defendants. The complaint alleged,
    inter alia, that the federal defendants orchestrated an illegal
    raid of Kahre’s properties, improperly arrested Kahre and
    stole $230,913 in cash from him.
    On October 4, 2004, the district court in the Bivens action
    denied the prosecutor’s motion to dismiss premised on
    absolute immunity. Treating the complaint’s allegations as
    true, the court denied absolute immunity because of the
    prosecutor’s alleged involvement in planning the raids.
    The government subsequently filed two indictments
    against Appellants, and the district court in the Bivens case
    granted the government’s emergency motion to stay the
    proceedings based on the pending criminal prosecutions.
    During the first trial, the jury was unable to reach verdicts,
    10               UNITED STATES V. KAHRE
    and the government subsequently filed the Third Superseding
    Indictment.
    Prior to the second trial, Kahre renewed a prior motion to
    disqualify the prosecutor because of a conflict of interest. In
    an attached declaration, Kahre’s counsel related that the
    prosecutor had remarked that Kahre’s counsel had
    “threatened [his] job and [his] pension,” making the case
    “personal.” Kahre filed a subsequent motion to disqualify the
    prosecutor because of his pecuniary and emotional interests
    in the Bivens action, and because the prosecutor had filed the
    indictments as retaliation for being named in the Bivens
    action.
    The district court denied Kahre’s motion, ruling that
    automatic disqualification was not warranted due to the
    pendency of a Bivens action, and that the prosecutor’s
    comments did not require disqualification on the merits.
    3. Appellants’ Motions To Dismiss the Indictments
    Based on the Gold and Silver Coins’ Valuation
    Appellants asserted that they lacked the requisite notice
    that their payroll payments in gold and silver coins were
    taxable at the coins’ fair market value and that their conduct
    violated the tax laws. They contended that the lack of notice
    in the statutory language compelled application of the rule of
    lenity, resulting in a construction of the statute that was most
    favorable to them. The district court rejected the Appellants’
    argument, explaining that the applicable statutes were
    unambiguous regarding the elements of conspiracy to defraud
    the government and of willful failure to truthfully account for
    taxes owed. The district court added that the statutes’
    scienter requirements mitigated any vagueness and that the
    UNITED STATES V. KAHRE                      11
    tax provisions patently articulated reporting and filing
    requirements.
    The district court eschewed Appellants’ argument that
    they did not defraud the government because gold and silver
    coins used to pay employees should have been assessed at
    face value, rather than fair market value, for tax purposes. If,
    for example, an employee was paid with ten silver dollar
    coins, Appellants would argue that the employee received
    only ten dollars in wages. However, if each silver dollar had
    a fair market value of fifty dollars, the government assessed
    the wages at 10 x $50 or $500.00. The district court was
    persuaded that Ninth Circuit precedent, as well as that of
    other courts including the Tax Court, required taxation of the
    coins at fair market value. The district court observed that
    the tax code and corresponding Treasury regulations treated
    property, such as gold and silver coins used as compensation
    for services rendered, as taxable at fair market value.
    C. Trial Testimony and Verdicts
    George Rodriguez (Rodriguez), who pled guilty to tax
    evasion, served as a foreman and superintendent for Kahre’s
    business, Wright Painting and Drywall. According to
    Rodriguez, all employees were required to sign an
    independent contract agreement in order to receive their pay.
    The agreement was designed to shield Kahre and his
    employees from tax obligations by establishing a system of
    wage payments in gold and silver.
    Although Kahre told Rodriguez that he was an
    independent contractor, Rodriguez described himself as an
    employee of Robert Kahre’s business. Kahre had the
    authority to direct Rodriguez in the performance of
    12              UNITED STATES V. KAHRE
    Rodriguez’s duties, including what work to perform and
    when the work was to be performed. Kahre also instructed
    Rodriguez regarding the timing of hiring additional workers,
    and regarding where to purchase supplies and tools. Kahre
    also had the right to terminate Rodriguez’s employment.
    According to Rodriguez, he and the other employees were
    paid in gold and silver on a weekly basis based on a system
    developed by Kahre and administered by Lori. Each week,
    Rodriguez received a single gold coin which he immediately
    exchanged for an envelope containing his $500 weekly salary
    in cash. All employees were required to accept payment in
    gold or silver coins, which coins were later exchanged for
    cash. Rodriguez never received W-2 forms reflecting his
    wages, and no deductions were made from his wages for
    income tax purposes.
    Rodriguez obtained tubes of gold and silver which he
    exchanged for envelopes of cash to distribute to the other
    employees. Rodriguez confirmed payroll payments after
    consulting payroll sheets generated by Lori. Payrolls were
    met with cash payments, and Rodriguez did not recall any
    employee who actually retained the gold or silver coins as
    wage payments.
    Heidi Molesworth (Molesworth), who also pled guilty to
    tax evasion, was employed in Kahre’s payroll office for five
    years. Kahre informed Molesworth that she was an
    independent contractor and she signed an independent
    contractor agreement.       Nevertheless, Kahre paid
    Molesworth’s wages in gold and silver coins that she
    immediately exchanged for envelopes of cash. Molesworth
    UNITED STATES V. KAHRE                           13
    did not receive W-2 or 1099 forms,3 and never filed a tax
    return. Molesworth paid Kahre’s employees in gold and
    silver coins. If an employee retained the gold or silver coins,
    the coins’ fair market value was deducted from the cash
    wages due.
    Molesworth testified that she and Lori used false names
    on the payroll sheets to avoid having to pay taxes, and that it
    was standard procedure to use false names on employment
    verification forms. Although most other employees were
    paid using the gold and silver exchange, Molesworth and the
    Kahres did not use that system for payment of their own
    wages. Instead, envelopes of cash were prepared for payment
    of their wages. In addition, Robert Kahre received fees for
    administering the payrolls of other companies, for which he
    used the same coin/cash payment system he utilized for his
    employees.
    IRS Special Agent Ryan Rickey testified that, between
    1999 and 2003, Kahre’s companies paid $22,382,760.42 in
    wages. Between 1998 and 2003, the companies using Kahre
    to administer their payrolls paid a total of $95,042,952.14 in
    wages and Kahre received $14,100,087.10 in fees. Agent
    Rickey also testified that return filing histories reflected that
    3
    A W-2 form is “[t]he form that an employer must send to an employee
    and the IRS at the end of the year. The W-2 form reports an employee’s
    annual wages and the amount of taxes withheld from his or her paycheck.”
    http://www.investopedia.com/terms/w/w2form.asp (last visited May 29,
    2013).
    A 1099 form is “[t]he IRS form for reporting payments to
    independent contractors or interest earned on investments or bank
    accounts . . .” http://financial-dictionary.thefreedictionary.com/Form+
    1099 (last visited May 29, 2013).
    14               UNITED STATES V. KAHRE
    Kahre did not file any tax returns between 1991 and 2006;
    Lori filed false returns from 1996 to 1999, and did not file
    any returns between 2000 and 2006; and Loglia did not file
    returns from 1998 to 2006.
    IRS Revenue Agent Sue Cutler estimated that, between
    1999 and 2002, Kahre’s companies paid Kahre a total salary
    of $1,956,738, and Kahre earned $14,100,087.10 in fees from
    other companies using his payroll services. Agent Cutler
    surmised that Kahre owed $2,049,172.97 in income taxes.
    Because Kahre did not file any employment taxes for his
    businesses from 1999 to 2003, Agent Cutler calculated an
    additional tax liability of $7,082,138.54.
    In his testimony, Robert Kahre explained that he
    developed his payroll system after the IRS seized his property
    and equipment from a failed business. Kahre met John
    Nelson (Nelson), who authored books and taught classes
    about the IRS and the monetary system, and Nelson’s ideas
    influenced Kahre to develop the payment system at issue.
    According to Kahre, he developed his gold payroll system
    because the United States government had debauched the
    national currency and utilized inflation to confiscate the
    wealth of U.S. citizens. Kahre relied on court cases and the
    Gold Bullion Coin Act of 1985 that approved gold coins as
    legal tender. Kahre devised the independent contractor
    agreements to reflect that the IRS was a foreign agent for the
    World Bank and the International Monetary Fund (IMF). In
    Kahre’s view, by collecting taxes for the IRS, employers
    illegally served as foreign agents for the World Bank and
    IMF. Kahre relied on several federal statutes, regulations,
    and “Presidential Documents” in the process of developing
    UNITED STATES V. KAHRE                      15
    his payroll system to avoid the collection of taxes on behalf
    of foreign agents.
    Loglia testified that, like Kahre, he was influenced by
    Nelson’s ideas about monetary history and monetary policy.
    Loglia believed that Congress approved the use of gold coins
    as an alternative to paper currency. Because of his interest in
    gold payments, Loglia agreed to work for Kahre, and stopped
    filing tax returns in 1993, since his income, calculated in
    accordance with the face value of the gold and silver coins,
    was below the filing threshold. Loglia believed that there
    was legal precedent supporting the gold payment system, and
    he calculated his income based on the coins’ face value on the
    ground that coins can be legally used to pay debt. Loglia was
    of the view that federal statutes and the Gold Bullion Coin
    Act of 1985 supported the gold payment system, considering
    that coins were approved legal tender, and that gold clause
    contracts were legally authorized.
    Lori Kahre testified that she started to work for her
    brother, Robert, in 1988. In 1993, Kahre commenced paying
    Lori her wages in silver dollars, and Lori thought the coins
    were legal tender based on Congressional acts. Lori was
    persuaded that the coins were legal tender because a coin
    shop did not collect taxes when exchanging cash for the
    coins, and the companies utilizing Kahre’s payroll system
    never challenged the transactions.
    Initially, Lori filed tax returns based on the face value of
    the silver coins. In 2000, Lori determined that she received
    between $63 and $125 wages per week, based on the face
    value of the coins. Because her wages calculated on the face
    value of the coins were below the threshold for filing taxes,
    Lori did not file any tax returns between 2001 and 2006.
    16                   UNITED STATES V. KAHRE
    The jury found Kahre guilty on all counts. Loglia was
    acquitted of conspiracy, but convicted on the remaining
    counts. The jury found Lori guilty on all counts with the
    exception of one count of willfully attempting to evade or
    defeat tax.
    D. Sentencing
    The presentence investigation report (PSR) calculated that
    Kahre had paid $25,572,307.17 in cash wages to his
    employees, and failed to withhold $10,891,791.72 in taxes.
    The PSR also determined that Kahre paid $95,175,992.14 in
    cash wages to the employees of thirty-five contracting
    businesses and thereby obstructed the collection of
    $40,847,545.80 in taxes. The PSR estimated the potential tax
    loss of Kahre’s payroll scheme at $51,739,337.52. The PSR
    estimated an additional $5,696,466.10 in tax liabilities due to
    Kahre’s failure to file tax returns in 1992, 1993, 1999, 2000,
    2001, and 2002. Combined with the tax losses from the
    payroll scheme, the total potential tax loss was
    $57,435,803.52.       From these calculations, the PSR
    recommended a total offense level of 39, with a guideline
    sentencing range of 262 to 327 months’ imprisonment.4
    The PSR calculated $16,060,104.72 in outstanding
    restitution from Kahre’s personal tax liability of
    $5,168,313.00, and $10,891,791.72 in tax losses from the
    payroll scheme.
    4
    The PSR also recommended an upward adjustment for obstruction of
    justice in light of Kahre’s false trial testimony, and denial of a downward
    adjustment for acceptance of responsibility.
    UNITED STATES V. KAHRE                       17
    During the sentencing hearing, the district court
    determined that a base offense level of 30 was supported by
    the trial testimony and relevant conduct, and rejected Kahre’s
    objection that the applicable guideline range was 51 to 63
    months. The district court held that there was ample support
    for an obstruction of justice enhancement, and that a
    downward adjustment for acceptance of responsibility was
    unwarranted.      The district court concluded that the
    recommended restitution amount was supported by the jury’s
    findings and the evidence at trial. After deciding that a
    downward variance was warranted, the district court
    sentenced Kahre to 190 months’ imprisonment and three
    years of supervised release. The district court also ordered
    $16,060,104.72 in restitution with $10,891,791.72 “to be
    jointly and severally owed by co-defendants.”
    The district court sentenced Lori to seventy-two months’
    imprisonment, four years of supervised release, and $31,900
    in restitution, and sentenced Loglia to twenty-six months’
    imprisonment, three years of supervised release, and $83,000
    in restitution.
    Appellants timely appealed their convictions and Kahre
    timely appealed his sentence.
    II. STANDARDS OF REVIEW
    “We review de novo the district court’s ruling on a
    motion to suppress.” United States v. Russell, 
    664 F.3d 1279
    ,
    1280 n.1 (9th Cir. 2012) (citation omitted). “The court’s
    factual findings are reviewed for clear error . . .” 
    Id.
     (citation
    omitted).
    18               UNITED STATES V. KAHRE
    “The district court’s determination that the predicate law
    was clearly established is a question of law which we review
    de novo.” United States v. George, 
    420 F.3d 991
    , 995 (9th
    Cir. 2005) (citation omitted).
    “The district court’s refusal to disqualify the prosecutor
    is reviewed for abuse of discretion.” United States v. Davis,
    
    932 F.2d 752
    , 763 (9th Cir. 1991), as amended (citation
    omitted).
    “We review evidentiary rulings for abuse of discretion,
    though we review de novo the district court’s interpretation
    of the Federal Rules of Evidence. . . .” United States v.
    Urena, 
    659 F.3d 903
    , 908 (9th Cir. 2011) (citation omitted).
    “This Court reviews the district court’s interpretation of
    the Sentencing Guidelines de novo, the district court’s
    application of the Sentencing Guidelines to the facts of a case
    for abuse of discretion, and the district court’s factual
    findings for clear error.” United States v. Dann, 
    652 F.3d 1160
    , 1175 (9th Cir. 2011) (citation and internal quotation
    marks omitted).
    “A factual finding that a defendant obstructed justice is
    reviewed for clear error. . . .” United States v. Garro,
    
    517 F.3d 1163
    , 1171 (9th Cir. 2008) (citation omitted). “A
    district court’s decision about whether a defendant has
    accepted responsibility is a factual determination reviewed
    for clear error. . . .” United States v. Rosas, 
    615 F.3d 1058
    ,
    1066 (9th Cir. 2010), as amended (citation omitted).
    “A restitution order is reviewed for an abuse of discretion,
    provided that it is within the bounds of the statutory
    framework. Factual findings supporting an order of
    UNITED STATES V. KAHRE                    19
    restitution are reviewed for clear error. The legality of an
    order of restitution is reviewed de novo.” Dann, 
    652 F.3d at 1175
     (citation omitted).
    III.      DISCUSSION
    A. Denial of Kahre’s Motions To Suppress
    Kahre contends that his arrest and the seizure of payroll
    funds at Bank of the West were the products of an illegal,
    pretextual search. The district court declined to address this
    issue on the merits, concluding that the motion to suppress
    was moot because the government was not introducing the
    seized evidence at trial. The record confirms the district
    court’s conclusion that the seized evidence was not
    introduced at trial, thereby rendering the motion to suppress
    moot. See United States v. Arias-Villanueva, 
    998 F.2d 1491
    ,
    1502 (9th Cir.1993), overruled on other grounds by United
    States v. Jimenez-Ortega, 
    472 F.3d 1102
    , 1103-04 (9th Cir.
    2007).
    In any event, suppression was not required merely
    because the arrest and corresponding search by federal agents
    were premised on a state warrant. See United States v.
    Hudson, 
    100 F.3d 1409
    , 1415–16 (9th Cir. 1996) (upholding
    the validity of a federal agent’s arrest and search premised on
    a state warrant). Because the agents acted pursuant to a valid
    state arrest warrant, the payroll funds were properly seized in
    the search incident to Kahre’s arrest. See United States v.
    Tank, 
    200 F.3d 627
    , 631 (9th Cir. 2000).
    20                   UNITED STATES V. KAHRE
    Relying on Fed. R. Crim. P. 41(g),5 Kahre contends that
    the payroll funds seized during his arrest should have been
    returned. However, Rule 41 is inapplicable, as the seized
    funds were applied to Kahre’s tax liabilities pursuant to a
    notice of levy. See United States v. Fitzen, 
    80 F.3d 387
    ,
    388–89 (9th Cir. 1996) (“[A]n IRS tax levy will defeat a Rule
    41(e) motion. . . . Regardless of whether the defendant owes
    federal taxes or state taxes, the existence of a tax levy
    demonstrates a right to possession adverse to that of the
    defendant.”) (citation omitted).6 The district court, therefore,
    properly denied Kahre’s motion to suppress and his request
    for the return of the seized funds pursuant to Rule 41.
    Finally, Kahre asserts that the search warrants for the
    Bledsoe, Kimberly, and Grand Canyon properties were
    invalid general warrants because they did not specify any
    criminal activity. To resolve this claim, we “must answer the
    threshold question of whether the warrant[s] incorporated
    Special Agent [Halper’s] affidavit.” United States v. SDI
    Future Health, Inc., 
    568 F.3d 684
    , 699 (9th Cir. 2009), as
    amended (citation omitted). “If it was incorporated, then we
    5
    Fed. R. Crim. P. 41(g) provides:
    A person aggrieved by an unlawful search and seizure
    of property or by the deprivation of property may move
    for the property's return. The motion must be filed in
    the district where the property was seized. The court
    must receive evidence on any factual issue necessary to
    decide the motion. If it grants the motion, the court
    must return the property to the movant, but may impose
    reasonable conditions to protect access to the property
    and its use in later proceedings.
    6
    The 1996 version of Rule 41(e) corresponds to the current version of
    Rule 41(g). See Fed. R. Crim. P. 41(e) (1996).
    UNITED STATES V. KAHRE                       21
    evaluate the affidavit and the warrant as a whole, allowing the
    affidavit to cure any deficiencies in the naked warrant.” 
    Id.
    (citation and internal quotation marks omitted). “We
    consider an affidavit to be part of a warrant, and therefore
    potentially curative of any defects, only if (1) the warrant
    expressly incorporated the affidavit by reference and (2) the
    affidavit either is attached physically to the warrant or at least
    accompanies the warrant while agents execute the search.”
    
    Id.
     (citations omitted). “A warrant expressly incorporates an
    affidavit when it uses suitable words of reference. . . .” 
    Id.
    (citation and internal quotation marks omitted). The
    challenged warrants in this case expressly incorporated the
    affidavit, and a copy of the affidavit accompanied the
    warrants. As discussed, the affidavits detailed criminal
    activities committed in conjunction with Kahre’s operation –
    failure to file tax returns, failure to withhold employment
    taxes, and conspiracy to evade taxes and to interfere with
    administration of the tax laws by the IRS. Because the search
    warrants, read in tandem with the accompanying affidavits,
    described specific crimes, the searches were not conducted
    pursuant to an impermissible general warrant. See 
    id.
     at
    699–702.
    Kahre further contends that, because the warrants lacked
    any limitations, seizure of items was improperly left to the
    agents’ discretion.
    “The prohibition of general warrants imposes a
    particularity limitation, requiring warrants to specify the
    items to be seized and the locations to be searched. . . .”
    United States v. Vasquez, 
    654 F.3d 880
    , 884 (9th Cir. 2011)
    (citation and internal quotation marks omitted). “The
    description must be specific enough to enable the person
    conducting the search reasonably to identify the things
    22                    UNITED STATES V. KAHRE
    authorized to be seized. . . .” United States v. Smith, 
    424 F.3d 992
    , 1004 (9th Cir. 2005) (citation and alteration omitted).
    Attachment B to the warrants sufficiently limited the
    agents’ discretion. Although Attachment B utilized the
    phrase “all records,” the search was temporally limited to
    records “[f]or the period January 1, 1992, until December 31,
    1993; and January 1, 1997 to present date[.]”7 The
    7
    Attachment B specified the search parameters as:
    For the period January 1, 1992, until December 31,
    1993; and January 1,1997 to present date:
    A. All records which deal with: Robert Kahre, Bobby
    Kahre, or ALPS, Bobby K’s Carpet Service, Bobby K’s
    Home Care Service, Inc., Gold Contracts and
    Associates, HGK Products, Inc., Master Paints
    Distributing, Master Paints, Production Electric,
    Production Metal, Production Plumbing and Air
    Conditioning, Punchout Industries, Sherman Carpets,
    Sherman Tile and Marble, Sherman Granite and Tile,
    Union Pacific, Union Pacific Construction, Wright
    Painting and Drywall, Wright Painting, Wright
    Products, Inc., and any other business entities
    associated or related to Robert Kahre, including but not
    limited to, ledgers, journals, proposals, estimates, bids,
    contracts, correspondence to and from general
    contractors/sub-contractors/clients/customers/state
    agencies, labor records, employee records, time cards,
    expense records, income records, tax documents, tax
    returns, state records, payroll records, insurance
    records, incorporation records, incorporation filings,
    financial records, records showing the disposition of
    funds and acquisition of assets, scales, weighing
    device(s), records of the acquisition of gold or silver,
    disposition of gold or silver, contracts and
    correspondence that deal with the acquisition and
    UNITED STATES V. KAHRE                           23
    disposition of gold or silver, literature describing the
    use of gold or silver, envelopes which appear to be used
    for payroll purposes, labels, employee listings,
    employee identifying information and files, records of
    off-site storage, records of security alarms or personnel.
    B. All records which deal with Robert Kahre, or any
    of the identified entities listed above, or any other
    business entities associated or related to Robert Kahre
    or Danille Cline, Richard Wellman, Myra Wellman
    (a.k.a. Myra Buonomo/Myra Kahre), Gary Bowers,
    Lori Rasmussen (a.k.a. Lori Kahre), including but not
    limited to, employment records, financial records,
    records showing the disposition of funds and/or
    acquisition of assets, and any other documents or
    records that includes a reference to the above named
    entities and individuals.
    C. All records which deal with Robert Kahre, or any
    of the identified entities or individuals listed above, or
    any other business entities associated or related to
    Robert Kahre or: Pacific Tile and Marble, D & L
    Framing, LLC, R J Company Framing, LLC (a.k.a. D
    & L Framing), Mitchell Framing Contractors, Inc.,
    Mitchell Drywall Systems, Inc., Mitchell General
    Contractors, Inc., R J Company, National Builders,
    Inc., National Builders, Olympic Framers, Inc., Bravo,
    Inc., Rhodes Framing, Rhodes Design & Development
    Corporation, Rocky Top Paint and Drywall, Bronco
    Construction, First Premier Drywall and Paint, Brandon
    LLC, Bricker Construction, Inc., ABC Roofing and
    Siding, Robert Dillon Framing, Toro Concrete, Inc.,
    Big Bear Concrete, Action Concrete, AM Concrete,
    Bull Concrete, Concrete Systems, or any other business
    entities or individuals associated with payroll,
    employee leasing, cash payments, receipt of gold or
    gold certificates, records to include but not limited to
    contracts, agreements, proof of payments, financial
    records, invoices, correspondence to or from any of the
    24                   UNITED STATES V. KAHRE
    search was thus confined to records associated with Kahre’s
    corporate entities and with the use of gold and silver
    payments. The search warrant affidavits furnished probable
    cause to search for the enumerated items. As a result, the
    search warrants provided the requisite specificity to limit the
    agents’ discretion. See Smith, 
    424 F.3d at
    1004–06.8
    We affirm the district court’s denial of Kahre’s motion to
    suppress evidence seized from the Bledsoe, Kimberly, and
    Grand Canyon properties.
    B. The District Court’s Determination of Tax
    Valuation Based on the Fair Market Value of the
    Gold and Silver Coins
    Appellants contend that the district court erred in denying
    their motions to dismiss the indictments because they did not
    know that their use of gold and silver coins for payroll
    payments was illegal under the tax laws. Appellants
    specifically maintain that the district court’s tax valuation
    predicated on the fair market value of the gold and silver
    above, and any other documents, records or evidence
    related to employees and/or payroll.
    8
    Kahre’s reliance on United States v. Bridges, 
    344 F.3d 1010
     (9th Cir.
    2003) is misplaced. In Bridges, IRS agents searched a business premised
    on a warrant that “delineate[d] no clear material limitation or boundary as
    to its scope.” 
    Id. at 1017
    . Unlike the warrants in this case, the warrant in
    Bridges lacked any temporal parameters or limitations regarding the types
    of documents associated with the alleged criminal activity. See 
    id.
     (“The
    list is a comprehensive laundry list of sundry goods and inventory that one
    would readily expect to discover in any small or medium-sized business
    in the United States. . . .”). The warrant in Bridges also failed to specify
    any criminal activity and did not incorporate the affidavit. See 
    id. at 1018
    .
    UNITED STATES V. KAHRE                      25
    coins unfairly imputed criminal intent to their unknowing
    actions.
    “The element of wilfulness cannot obtain in a criminal tax
    evasion case unless the law clearly prohibited the conduct
    alleged in the indictment.” George, 
    420 F.3d at 995
     (citations
    and internal quotation marks omitted). “Without sufficient
    clarity in the law, taxpayers lack the fair notice demanded by
    due process so that they may conform their conduct to the
    law.” 
    Id.
     (citation and internal quotation marks omitted).
    “However, a lack of prior appellate rulings on the topic does
    not render the law vague, nor does a lack of previously
    litigated fact patterns deprive taxpayers of fair notice.” 
    Id.
     at
    995–96 (citation and internal quotation marks omitted).
    “Thus, criminal prosecution is permissible when it is clear
    beyond any doubt that the conduct is illegal under established
    principles of tax law.” 
    Id. at 996
     (citation, alterations, and
    internal quotation marks omitted).
    Appellants’ argument is unpersuasive, as we have
    expressly held that coins are taxable as property when their
    fair market value exceeds their face value. In Cordner v.
    United States, 
    671 F.2d 367
     (9th Cir. 1982), the appellants
    received $20 Double Eagle gold coins as corporate dividends.
    See 
    id. at 368
    . After the appellants reported the dividends at
    the coins’ face value, the IRS charged the appellants with a
    taxable dividend equivalent to the coins’ fair market value.
    See 
    id.
     We held that the IRS correctly assessed the coins as
    property based on their fair market value:
    We have no difficulty in holding that the gold
    coins here, though legal tender and hence
    money for some purposes, are also property to
    be taxed at fair market value because they
    26               UNITED STATES V. KAHRE
    have been withdrawn from circulation and
    have numismatic worth. When legal tender,
    by reason of its value to collectors or the
    intrinsic worth of its contents, has a fair
    market value in excess of its face value or
    tender, then it should be deemed property
    other than money . . .
    
    Id.
     (citations and internal quotation marks omitted).
    In Cal. Fed. Life Ins. Co. v. Comm’r, 
    680 F.2d 85
     (9th
    Cir. 1982), the appellant exchanged Swiss francs for $20 gold
    coins, and claimed a capital loss premised on the coins’ face
    value. See 
    id. at 86
    . We affirmed the tax court’s
    determination that the gold coins were taxable as property
    based on their fair market value. See 
    id.
     We held that usage
    of the term “money” in I.R.C. § 1001(b) required a realistic
    assessment of the coins as property:
    Section 1001(b) is clearly intended to permit
    a realistic assessment of the economic gain or
    loss attending a sale or exchange. That
    purpose would be frustrated by an
    interpretation that compelled gold coins to be
    treated at a fraction of their true value. We
    therefore conclude that money in § 1001(b)
    refers to the currently circulating medium of
    exchange, while property includes coins that
    have, by reason of their value to collectors or
    the intrinsic worth of their contents, a fair
    market value in excess of their face value.
    Because the key element is the excess of
    market over face value, it is immaterial that
    UNITED STATES V. KAHRE                       27
    such coins may be legal tender at their face
    value.
    Id. (footnote reference and internal quotation marks omitted).
    Appellants attempt to distinguish Cordner and Cal. Fed.
    Life Ins. Co. because those cases involved coins that had been
    withdrawn from circulation. However, in Cal. Fed. Life Ins.
    Co., we declined to recognize this very distinction because
    we “agree[ed] with the Tax Court’s conclusion that the
    technical status of the coins as legal tender is immaterial . . .”
    Cal. Fed. Life Ins. Co., 
    680 F.2d at
    86 n.3 (citation and
    internal quotation marks omitted). Rather, we emphasized
    that “[b]ecause the key element is the excess of market over
    face value, it is immaterial that such coins may be legal
    tender at their face value. . . .” 
    Id. at 86
     (footnote reference
    omitted).
    Other courts have held that coins in circulation may be
    assessed at their fair market value. In Joslin v. United States,
    
    666 F.2d 1306
     (10th Cir. 1981), the Tenth Circuit considered
    whether the taxpayer should have reported payments in silver
    dollars at their numismatic value. See 
    id.
     In that case, an
    attorney received 200 silver dollars for legal services, and
    reported the income as $200, instead of the fair market value
    of $1,000. See 
    id.
     at 1306–07. The Tenth Circuit observed
    that “[i]f a taxpayer receives property other than cash as
    compensation, the taxpayer’s income is measured by the
    property’s fair market value.” 
    Id. at 1307
     (citation omitted).
    Based on general tax principles, the Tenth Circuit held:
    Unquestionably, a silver dollar has both a face
    value and a separate value reflecting the
    coin’s numismatic worth. To this extent a
    28               UNITED STATES V. KAHRE
    silver dollar combines the characteristics of
    cash and property. When a taxpayer bargains
    for and benefits from the higher market value
    of silver coins, he or she must include this
    amount in income. That silver dollars are
    designated legal tender with a nominal value
    of one dollar acceptable at the United States
    Treasury to discharge one dollar of debt, or
    exchangeable for a one dollar Federal Reserve
    note, does not require a different result. . . .
    
    Id.
     (citations and footnote reference omitted).
    In Stoecklin v. Comm’r, 
    865 F.2d 1221
     (11th Cir. 1989),
    the Eleventh Circuit reached a similar conclusion. In that
    case, the appellant, who was the trustee of an equity trust,
    formed a corporation for his accounting practice, of which he
    was the only shareholder and employee. See 
    id.
     at 1222–23.
    The corporation paid the appellant’s trust 250 silver dollars
    per month for the appellant’s services. See 
    id. at 1223
    .
    Although the corporation deducted the coins’ fair market
    value as expenses, the appellant only reported the face value
    of the coins as income. See 
    id.
     The IRS subsequently sought
    a deficiency premised on the fair market value of the coins.
    See 
    id.
     Applying the precepts developed in Cordner and
    Joslin, the Eleventh Circuit rejected the appellant’s argument
    that coins still in circulation were assessed at face value, and
    held that the IRS properly sought a deficiency premised on
    the fair market value of the coins. See 
    id. at 1225
    ; see also
    Lary v. Comm’r, 
    842 F.2d 296
    , 299 (11th Cir. 1988) (“Where
    coins have a fair market value in excess of their face value,
    UNITED STATES V. KAHRE                             29
    their potential use as legal tender is irrelevant. . . .”) (citation
    omitted).9,10
    Based on this longstanding and consistent precedent, we
    conclude that Appellants had ample notice that their payroll
    scheme, premised on the exchange of gold and silver coins
    for envelopes of cash, triggered the requirement to remit
    payroll taxes to the IRS and to report the payments as income
    based on the fair market value of the coins. See George,
    
    420 F.3d at
    995–96.11
    9
    Appellants contend that gold and silver coins are statutorily valued at
    face value. However, this appeal does not really concern the statutory
    value of gold and silver coins when utilized as legal tender. See Cordner,
    
    671 F.2d at 368
    ; Stoecklin, 
    865 F.2d at 1225
    . Instead, this appeal
    addresses Appellants’ payment of wages in gold and silver coins in a
    scheme to avoid payroll taxes, as evidenced by the facts that Kahre’s
    employees were required to immediately return the coins for cash and, that
    if an employee retained the coins, his wages were reduced by the fair
    market value of the coins.
    10
    The Tax Court has also opined that coins are taxed as property at fair
    market value when used as compensation for services or goods. See Smith
    v. Comm’r, T.C.Memo. 1998-148, 
    1998 WL 191835
    , at *3 (U.S. Tax Ct.
    1998) (“When the fair market value of legal tender exceeds its face value,
    such legal tender is property other than money.”) (citations omitted).
    11
    In their request for judicial notice, Appellants proffer a memorandum
    from IRS Senior Counsel Mark Howard as confirmation that the IRS
    assesses coins at face value, and that Appellants’ payments in gold and
    silver coins were consistent with IRS policy. However, the referenced
    memorandum primarily analyzed whether a taxpayer could pay a tax bill
    with gold and silver coins at face value. Citing Joslin, Cordner, and Cal.
    Fed. Life Ins. Co., the memorandum opined that “the taxpayer may have
    taken his pay out of the business in gold and silver coins and reported only
    the face value of the coins as income. We note that others have tried such
    an approach in the past. In each of these cases, the courts required the
    taxpayers to recognize income based on the market value and not on the
    30                  UNITED STATES V. KAHRE
    We are not persuaded by Appellants’ argument that the
    Gold Bullion Coin Act of 1985, Pub. L. No. 99-185, 
    99 Stat. 1177
    , overruled prior legal precedent that coins are assessed
    at fair market value. Although the Gold Bullion Coin Act
    provides the Secretary of the Treasury with the authority to
    mint gold and silver coins for circulation, see 
    31 U.S.C. § 5112
    (a)(7)–(11) (2010),12 there is no statutory language
    reflecting Congressional intent to overrule prior legal
    precedent or to establish the taxable value of the coins as their
    face value. See id.; see also Sklar v. Comm’r, 
    549 F.3d 1252
    ,
    1262 (9th Cir. 2008) (observing that if Congress intended to
    overrule judicial precedent concerning tax laws, “it would
    have expressed its intention more clearly”) (citation omitted).
    Further, the legislative history of the Act reflects, if anything,
    Congressional intent that gold coins retain their fair market
    value. See 131 Cong. Rec. H10528-05, 
    1985 WL 721189
    (Cong. Rec. Dec. 2, 1985) (statement of Rep. Annunzio)
    (“The gold coins will be sold at the market price of gold plus
    a small charge for minting, marketing and distribution,
    beginning October 1, 1986. . . .”); see also 
    id.
     (statement of
    Rep. Lewis) (“The actual denomination of these new coins
    will be obvious to everyone-1 troy ounce, half-ounce,
    quarter-ounce, and tenth-ounce. Their value will be
    determined by the free market, just as the values of all other
    face value of the coins. This case may provide evidence of some sort of
    ongoing scheme . . .” The memorandum does not support Appellants’
    argument that their payroll payments were consistent with IRS policy. See
    Consolidated Appellants’ Request to Take Judicial Notice of Government
    Records and Facts Contained Therein That Can Be Accurately and
    Readily Determined, March 5, 2012, Exh. 1, at 2, 5, Case No. 09-10471,
    Docket No. 70.
    12
    The Gold Bullion Coin Act of 1985 is currently codified at 
    31 U.S.C. § 5112
     (2010).
    UNITED STATES V. KAHRE                    31
    goods and services are determined.”). The legislative record
    contains no linguistic or historical support for Appellants’
    contention that the Gold Bullion Coin Act of 1985 overruled
    prior legal precedent formulating tax assessments for gold
    and silver coins.
    Appellants’ reliance on 
    31 U.S.C. § 5118
    (a) and (d) in
    support of their argument that the district court’s ruling
    violated their right to contract is similarly misplaced.
    According to Appellants, § 5118 legalizes contracts like
    theirs, that contain “gold clauses.”
    Section 5118 provides in relevant part:
    (a) In this section—(1) gold clause means a
    provision in or related to an obligation
    alleging to give the obligee a right to require
    payment in—(A) gold; (B) a particular United
    States coin or currency; or (C) United States
    money measured in gold or a particular
    United States coin or currency.
    ...
    (d)(1) In this subsection, obligation means any
    obligation (except United States currency)
    payable in United States money. (2) An
    obligation issued containing a gold clause or
    governed by a gold clause is discharged on
    payment (dollar for dollar) in United States
    coin or currency that is legal tender at the time
    of payment. This paragraph does not apply to
    an obligation issued after October 27, 1977.
    32               UNITED STATES V. KAHRE
    Id. (internal quotation marks omitted).
    Assuming arguendo that § 5118 does “legalize” contracts
    containing gold clauses, it would be of no help to Appellants,
    because Appellants’ schemes did not implicate gold clause
    contracts as defined in § 5118. See § 5118(a)(1) (defining
    “gold clause” as an obligation purporting to give the obligee
    the right to demand payment in, among other things, gold);
    see also 60 Am.Jur.2d Payments § 26 (2012) (“A gold clause
    is a provision in or related to an obligation alleging to give
    the obligee a right to require payment in gold, a particular
    United States coin or currency, or United States money
    measured in gold or a particular United States coin or
    currency. An obligation issued containing a gold clause or
    governed by a gold clause is discharged on payment (dollar
    for dollar) in United States coin or currency that is legal
    tender at the time of payment. . . .”) (footnote references and
    internal quotation marks omitted). Rather than utilizing a
    gold clause, i.e., a clause designed to give employees a right
    to demand payment in gold, Appellants evaded income and
    payroll tax obligations by requiring employees to exchange
    gold and silver coins for cash in order to receive their weekly
    wages. This practice turned the gold clause standard on its
    head. Rather than the obligee (the employee) demanding
    payment in gold from the obligor (Kahre), the obligor (Kahre)
    required the obligee (the employee) to accept payment in gold
    that would then be repaid with cash. Nothing in 
    31 U.S.C. § 5118
     or cases interpreting that statute validates Kahre’s
    practice.
    Notably, if an employee retained a gold or silver coin in
    lieu of cash, the fair market value of the coin, as opposed to
    its face value, was deducted from the employee’s wages. The
    evidence at trial also established that the Kahres did not
    UNITED STATES V. KAHRE                       33
    participate in the gold and silver coin exchange required of
    Kahre’s employees, a clear indication of the illegitimacy of
    the practice. Given the inapplicability of § 5118 to Kahre’s
    scheme, Appellants’ argument regarding their right to
    contract pursuant to that section is unpersuasive.
    In the alternative, Appellants maintain that the
    Department of Justice and the IRS lack authority to value
    coinage. In essence, Appellants erroneously assume that the
    IRS thwarted Congress’ monetary powers, including the
    valuation of money. The flaw in Appellants’ assumption is
    that the IRS did not establish valuation of coinage as a matter
    of monetary policy. Rather, the IRS interpreted and applied
    the tax code defining the taxable value of gold and silver
    coins as property when used as compensation for services
    rendered. The IRS’s actions in no way violated the
    separation of powers, as the IRS is “the authority on the
    interpretation and application of the Internal Revenue Code
    . . .” Tualatin Valley Builders Supply, Inc. v. United States,
    
    522 F.3d 937
    , 942 (9th Cir. 2008); see also 
    26 U.S.C. § 7805
    (a) (delegating authority concerning the Internal
    Revenue Code).
    Appellants again urge application of the rule of lenity to
    reverse their convictions, pointing to the “uncertainty” of
    their tax obligations. “The rule of lenity only applies,
    however, where there is a grievous ambiguity or uncertainty
    in the language and structure of the statute, such that even
    after a court has seized every thing from which aid can be
    derived, it is still left with an ambiguous statute. . . .” United
    States v. Carona, 
    660 F.3d 360
    , 369 (9th Cir. 2011), as
    amended (citation, alterations, and internal quotation marks
    omitted). “Because the meaning of language is inherently
    contextual, we have declined to deem a statute ambiguous for
    34                  UNITED STATES V. KAHRE
    purposes of lenity merely because it was possible to articulate
    a construction more narrow than that urged by the
    government. . . .” 
    Id.
     (citation and alteration omitted)
    (emphasis in the original).
    As discussed, several federal courts, as well as the Tax
    Court, have held that gold and silver coins are assessed at
    their fair market value when used for compensation for
    services rendered. The applicable tax laws and corresponding
    regulations also establish that, when property is used as
    compensation, it is assessed at fair market value. See
    
    26 U.S.C. § 61
    (a)(1) (defining gross income as including
    “[c]ompensation for services, including fees, commissions,
    fringe benefits, and similar items . . .”); 
    26 C.F.R. § 1.61-2
    (d)(1) (“[I]f services are paid for in property, the fair
    market value of the property taken in payment must be
    included in income as compensation. . . .”). Additionally,
    Appellants were charged with violating 
    26 U.S.C. § 7202
    ,
    with the operative Indictment alleging that Appellants
    “willfully fail[ed] to collect or truthfully account for and pay
    over such tax . . .” (emphasis added). Inclusion of a scienter
    requirement “mitigates a law’s vagueness, especially with
    respect to the adequacy of notice to the complainant that his
    conduct is proscribed.” United States v. Guo, 
    634 F.3d 1119
    ,
    1123 (9th Cir. 2011) (citations, alteration, and internal
    quotation marks omitted).13
    13
    Appellants posit that the government’s confusion concerning the
    valuation of gold and silver coins demonstrates that the law is unsettled.
    In support of the premise that the government is in fact confused, they
    point to the indictment in United States v. von Nothaus, Case No. 5:09-27
    (W.D. N.C.) (von NotHaus Indictment). Appellants assert that
    governmental confusion is evidenced by the allegation in the von Nothaus
    Indictment that coins constitute United States currency, rather than
    property. However, von Nothaus involved the creation and promotion of
    UNITED STATES V. KAHRE                            35
    We hold that the district court correctly determined that
    gold and silver coins used to pay wages were properly
    assessed at their fair market value, and that Appellants had
    sufficient notice that their conduct was illegal under the tax
    laws.
    C. Disqualification of the Prosecutor
    Although we have held that the mere threat of civil
    litigation does not warrant a prosecutor’s disqualification, see
    United States v. Wencke, 
    604 F.2d 607
    , 611 (9th Cir. 1979),
    we have not extensively addressed disqualification premised
    on an extant civil action against the prosecutor. In United
    States v. Kember, 
    685 F.2d 451
     (D.C. Cir. 1982), the D.C.
    Circuit addressed an analogous claim. In Kember, the
    defendants sought disqualification of two federal prosecutors
    who were named as defendants in a lawsuit concerning a
    search conducted in bad faith. See 
    id. at 458
    . The D.C.
    Circuit held that the lawsuit alone did not require
    disqualification, explaining that:
    The potential conflict of interest that might
    result from a personal civil suit filed against
    an Assistant United States Attorney (AUSA)
    by a defendant in a criminal case for acts
    undertaken by the AUSA in his official
    capacity in the criminal matter would have to
    be very strong before disqualification would
    be justified. It could not be justified by mere
    a private coin as competing currency, and not violations of the tax code
    through the use of wage payments in gold and silver coins to avoid paying
    payroll taxes. As in this case, the legal analysis turned on the manner in
    which the coins were used.
    36                   UNITED STATES V. KAHRE
    inference from the filing of the suit but would
    require proof, by clear and convincing
    evidence, of a prima facie case of misconduct
    on the part of the AUSA. The defendants
    failed to produce the proof required by this
    standard.
    
    Id. at 459
     (citation omitted); see also United States v. Heldt,
    
    668 F.2d 1238
    , 1275–77 (D.C. Cir. 1981) (per curiam), as
    amended (clarifying that a lawsuit filed by a criminal
    defendant against a prosecutor does not result in automatic
    disqualification of that prosecutor).14
    Appellants contend that the district court improperly
    applied a clear and convincing standard of proof in resolving
    the disqualification issue because the Supreme Court
    overruled Kember in Young v. United States ex rel. Vuitton Et
    Fils, 
    481 U.S. 787
     (1987) (Vuitton). In Vuitton, the Supreme
    Court considered whether a private attorney, who was the
    14
    Appellants contend that the denial of qualified immunity in the Bivens
    action was a unique event demonstrating the impermissible motivation for
    the criminal prosecution. We disagree. The district court in the civil
    action was required to assume that the allegations of impermissible
    motivation were true. See Ctr. for Bio-Ethical Reform, Inc. v. Los Angeles
    Cnty. Sheriff Dep’t, 
    533 F.3d 780
    , 798 (9th Cir. 2008) (assuming the truth
    of allegations in the Complaint for the purpose of qualified immunity
    analysis). Given the posture of the civil case, the district court’s denial of
    qualified immunity does not reflect a “unique event” distinguishing this
    case from Kembler. We also do not consider the prosecutor’s dismissal
    of the appeal in the Bivens case as an admission of misconduct, or proof
    of an impermissible conflict of interest. The record simply reflects that
    Appellants and the prosecutor, as one of several defendants, dismissed the
    appeal based on the parties’ stipulations. Moreover, the government had
    an exceptionally strong case against Appellants irrespective of the
    prosecutor’s involvement.
    UNITED STATES V. KAHRE                       37
    beneficiary of an injunction regarding a trademark, could be
    appointed to prosecute contempt charges for violations of the
    injunction. See 
    id.
     at 790–91. The Supreme Court observed
    that “[p]rivate attorneys appointed to prosecute a criminal
    contempt action represent the United States, not the party that
    is the beneficiary of the court order allegedly violated. . . .”
    
    Id. at 804
    . “A private attorney appointed to prosecute a
    criminal contempt therefore certainly should be as
    disinterested as a public prosecutor who undertakes such a
    prosecution.” 
    Id.
     (footnote reference omitted). The Supreme
    Court held that “counsel for a party that is the beneficiary of
    a court order may not be appointed as prosecutor in a
    contempt action alleging a violation of that order.” 
    Id. at 809
    (footnote reference omitted). The Supreme Court also held
    that harmless error review was inapplicable because the
    appointment of an interested prosecutor constitutes structural
    error. See 
    id.
     at 809–10.
    Although the Supreme Court held that, in certain
    situations, appointment of a prosecutor with a conflict of
    interest constitutes reversible error, the Court did not alter the
    standard for determining whether a disqualifying conflict
    exists, or even discuss Kember. Concluding that a conflict
    existed in Vuitton was an easy call. The appointed prosecutor
    was a private attorney who represented Louis Vuitton, the
    beneficiary of the injunction being enforced. See 
    id.
     at
    791–92. The Supreme Court identified the pecuniary interest
    of the retained counsel/prosecutor as an “inherent conflict.”
    
    Id. at 807
    . In recognition of that inherent conflict, the
    Supreme Court held that “counsel for a party that is the
    beneficiary of a court order may not be appointed as
    prosecutor in a contempt action alleging a violation of that
    order.” 
    Id. at 808
     (footnote reference omitted). Because of
    the stark difference in facts between Vuitton and this case, we
    38                UNITED STATES V. KAHRE
    are not persuaded that Vuitton is applicable here. We are,
    however, persuaded by and adopt the reasoning of the D.C.
    Circuit in Kember. We therefore hold that proof of a conflict
    must be clear and convincing to justify removal of a
    prosecutor from a case. Otherwise, as noted in Heldt,
    prosecutors could be removed simply by the filing of an
    action against them. See Heldt, 
    668 F.2d at 1276
    .
    This rule is consistent with our precedent, which has
    treated the Supreme Court’s ruling in Vuitton as a narrow
    one. See F.T.C. v. Am. Nat’l Cellular, 
    868 F.2d 315
    , 319 (9th
    Cir. 1989) (“The Vuitton opinion focused quite narrowly on
    the conflicts of interest faced by private attorneys trying to
    represent simultaneously both their private clients’ interests
    and the public interest in prosecuting contemnors.
    Specifically, the Court in Vuitton appears largely to have been
    concerned with conflicting financial interests. . . .”) (citation
    omitted) (emphasis in the original). In Am. Nat. Cellular, we
    compared the conflict in Vuitton to the financial interests that
    would foreclose the participation of a government prosecutor.
    See 
    id.
     (referencing 
    18 U.S.C. § 208
    (a), which prohibits
    government employees from participating in matters in which
    they have a financial interest). It is undisputed that the
    prosecutor’s alleged conflict of interest in this case arose after
    he was already involved in the case as a government attorney,
    and in no way involved a financial interest on the part of the
    prosecutor. The dichotomy between the private attorney’s
    appointment in Vuitton and non-prejudicial potential conflicts
    of interest arising in other contexts is exemplified by the facts
    of United States v. Lorenzo, 
    995 F.2d 1448
     (9th Cir. 1993).
    In that post-Vuitton case, we considered whether the United
    States Attorney’s Office in Hawaii should have been
    disqualified because some of its employees were victims of
    a tax protest scheme. See 
    id.
     at 1451–52. Relying on Heldt,
    UNITED STATES V. KAHRE                      39
    we held that disqualification was not warranted because the
    defendants failed to demonstrate prejudice. See 
    id. at 1453
    .
    Lorenzo establishes that, at a minimum, defendants must
    demonstrate prejudice from the prosecutor’s potential conflict
    of interest. See 
    id.
     Moreover, under Kember, which was not
    overruled by Vuitton, clear and convincing evidence of
    prosecutorial misconduct must be presented. See Kember,
    
    685 F.2d at 459
    . This burden of presentation is logical,
    otherwise any defendant could disqualify a prosecutor by
    simply filing a Bivens action without presenting clear and
    convincing evidence of prosecutorial misconduct, but only
    “complain[ing] of some action taken by the prosecutor
    outside of his quasi-judicial capacity . . .” Heldt, 
    668 F.2d at 1276
    .
    Appellants contend that the prosecutor’s comments
    regarding threats to his pension from the Bivens action and
    his statement that the case was “personal” demonstrate the
    requisite misconduct. We do not agree. As the district court
    observed, the prosecutor’s remarks occurred in 2008, almost
    three years after the filing of the initial indictments in 2005,
    and thereby could not have been the impetus for filing the
    criminal charges. Moreover, even inflammatory comments
    made during a trial do not necessarily warrant reversal. See
    Hein v. Sullivan, 
    601 F.3d 897
    , 913, 916 (9th Cir. 2010)
    (holding that a prosecutor’s derogatory comments in closing
    argument regarding defendants and defense counsel were not
    prejudicial). The prosecutor’s isolated remarks do not
    constitute clear and convincing evidence of misconduct
    stemming from an impermissible conflict of interest. See 
    id. at 916
    .
    In a similar vein, Appellants maintain that disqualification
    was justified because of the heightened prosecutorial
    40                UNITED STATES V. KAHRE
    discretion in tax cases, i.e., tax deficiencies may be pursued
    criminally or civilly. However, this argument overlooks the
    reality that an Assistant United States Attorney does not
    possess unbridled discretion to pursue prosecution in tax
    cases. Rather, the Department of Justice’s Tax Division must
    approve all criminal tax prosecutions. See U.S.A.M. § 6-
    4:010 (“To achieve uniform, broad, and balanced criminal tax
    enforcement, the Attorney General has authorized the Tax
    Division to oversee all federal criminal tax enforcement and
    to authorize or decline investigations and prosecutions in tax
    matters. . . .”) (citation omitted). Appellants do not
    persuasively contend that the Department of Justice’s Tax
    Division operated under any conflict or that its supervisory
    role was ineffective in this case.
    Appellants next argue that the prosecutor’s trial conduct
    manifested his conflict of interest. For example, Appellants
    assert that the prosecutor, due to his conflict of interest, failed
    to elicit from Molesworth that her testimony in the first trial
    was perjured. However, Appellants fail to identify any aspect
    of Moleworth’s testimony that was false. See United States
    v. Bingham, 
    653 F.3d 983
    , 995 (9th Cir. 2011) (“We cannot
    presume that the prosecutor knew that the prior inconsistent
    statement was true but elicited perjured testimony anyway,
    and [Appellants] point[ ] to nothing in the record that shows
    the intentional use of perjured testimony. . . .”) (citation,
    alteration, and internal quotation marks omitted). Appellants
    in no way challenge the district court’s ruling that the
    government properly disclosed to Appellants prior to trial
    Molesworth’s statement that she had previously perjured
    herself and that Appellants’ counsel effectively cross-
    examined Molesworth on that point. The district court’s
    unchallenged ruling rebuts Appellants’ allegations of
    prosecutorial misconduct.
    UNITED STATES V. KAHRE                              41
    Finally, Appellants contend that the prosecutor suborned
    perjury because one witness’ testimony was contradicted by
    other witnesses.     However, Appellants fail again to
    effectively challenge the district court’s ruling that the
    contradictory testimony presented a credibility issue, not
    perjury. Therefore, the district court did not abuse its
    discretion in ruling that the prosecutor should not be
    dismissed on this basis. See Davis, 
    932 F.2d at
    761–62.15
    Because Appellants failed to present clear and convincing
    evidence of an impermissible conflict of interest or of
    prejudice, we conclude that the district court properly denied
    Appellants’ motion to disqualify the prosecutor. See Lorenzo,
    
    995 F.2d at 1453
    ; see also Kember, 
    685 F.2d at 459
    .
    15
    Appellants posit a litany of alleged discovery violations reflecting the
    prosecutor’s conflict of interest. However, the district court did not find
    any such violations, and its rulings with respect to disqualification on
    these bases did not constitute an abuse of discretion. See United States v.
    Hinkson, 
    585 F.3d 1247
    , 1263 (9th Cir. 2009) (en banc) (holding that
    reversal for “abuse of discretion” is permissible only when the ruling or
    finding being reviewed “is illogical, implausible, or without support in
    inferences that may be drawn from the facts in the record”).
    Appellants also accuse the prosecutor of misrepresenting the factual
    basis for a summary chart that was received into evidence. The district
    court ruled that the summary chart was admissible, and that it did not
    “hurt the defendant in any way, shape, or form.” Here too, the district
    court did not abuse its discretion by declining to disqualify the prosecutor.
    42               UNITED STATES V. KAHRE
    D. Evidentiary Rulings
    1. Evidence Concerning the Legality of Gold
    Clause Contracts
    Appellants challenge the district court’s exclusion of
    evidence concerning the legality of gold clause contracts.
    As discussed, the district court properly determined that
    gold and silver coins should be assessed at fair market value
    when used as compensation for services. Based on this
    correct legal conclusion, the district court held that proffered
    evidence attempting to otherwise establish the requirements
    of governing tax law was irrelevant to the issue of
    willfulness.    However, Appellants were permitted to
    introduce statutes, IRS pamphlets, tax provisions and other
    sources upon which Appellants relied in good faith during the
    duration of their wage payment system.
    The district court’s ruling fully comported with our
    precedent. In United States v. Powell, 
    955 F.2d 1206
     (9th
    Cir. 1992), as amended, we observed that, in a criminal tax
    case, “a district court may exclude evidence of what the law
    is or should be . . .” 
    Id. at 1214
     (citation omitted) (emphasis
    in the original). In contrast, the district court “ordinarily
    cannot exclude evidence relevant to the jury’s determination
    of what a defendant thought the law was . . . because
    willfulness is an element of the offense.” 
    Id.
     (emphasis in the
    original). “[S]tatutes or case law upon which the defendant
    claims to have actually relied are admissible to disprove that
    element if the defendant lays a proper foundation which
    demonstrates such reliance.” 
    Id.
     (citations and emphasis
    omitted). “Legal materials upon which the defendant does
    not claim to have relied, however, can be excluded as
    UNITED STATES V. KAHRE                               43
    irrelevant and unnecessarily confusing because only the
    defendant’s subjective belief is at issue: the court remains the
    jury’s sole source of the law.” 
    Id.
     “In addition, the court may
    instruct the jury that the legal material admitted at trial is
    relevant only to the defendant’s state of mind and not to the
    requirements of the law, and may give other proper
    cautionary and limiting instructions as well.” 
    Id.
    The district court, therefore, properly excluded evidence,
    including proffered expert testimony, that conflicted with its
    correct legal ruling that coins were assessed at fair market
    value for tax purposes irrespective of their use as legal tender.
    See id.16
    Appellants’ contention that the district court’s evidentiary
    rulings improperly diluted the burden of proof and precluded
    a complete defense is unpersuasive. Although the district
    court excluded evidence that contradicted its correct legal
    ruling regarding valuation of gold and silver coins for tax
    purposes, the court properly instructed the jury that:
    A defendant’s conduct is not willful if that person
    acts due to a good faith misunderstanding of the
    law. Because the government has the burden of
    16
    Appellants’ assertion that the district court erred in excluding evidence
    that its ruling was the first in the nation is unavailing. The district court’s
    exclusion of the proffered evidence did not impact the presentation of
    evidence of Appellants’ good faith beliefs, as the court’s ruling on
    valuation of the coins occurred subsequent to the charged conduct and
    could not have been relied upon by Appellants in implementing their wage
    payment system. See Powell, 
    955 F.2d at 1214
     (instructing that evidence
    is admissible only if relied upon by defendants). In any event, as a factual
    matter, the district court’s ruling was not the first in the nation. Rather, it
    was premised on prior legal precedent.
    44                   UNITED STATES V. KAHRE
    proving a defendant acted willfully, the
    government also has the burden of negating a
    defendant’s claim that because of a
    misunderstanding of the law, the defendant had a
    good faith belief that he was not violating the
    relevant provisions of the tax code.
    The district court’s ruling and corresponding instructions
    encompassed Appellants’ good faith defense. See Powell,
    
    955 F.2d at 1214
     (“In addition, the court may instruct the jury
    that the legal material admitted at trial is relevant only to the
    defendant’s state of mind and not to the requirements of the
    law, and may give other proper cautionary and limiting
    instructions as well.”).
    2. Other Evidence Concerning Appellants’ Good
    Faith Belief That The Wage Payments Were
    Not Taxable
    Appellants contend that the district court erred under Fed.
    R. Evid. 803(3)17 when it excluded testimony of the Kahres’
    17
    Pursuant to Fed. R. Evid. 803(3), as it existed at the time of the trials
    at issue in this case:
    The following are not excluded by the hearsay rule,
    even though the declarant is available as a witness:
    (3) A statement of the declarant’s then-existing state of
    mind, emotion, sensation, or physical condition (such as
    intent, plan, motive, design, mental feeling, pain, and bodily
    health), but not including a statement of memory or belief to
    prove the fact remembered or believed unless it relates to
    the execution, revocation, identification, or terms of the
    declarant’s will.
    UNITED STATES V. KAHRE                            45
    contemporaneous statements regarding their good faith belief
    that the payments were legal and non-taxable.
    Appellants challenge only two rulings by the district
    court. In the first challenged ruling, the district court
    sustained the government’s objection to testimony in which
    the witness explained that Kahre told him coins were taxed at
    their face value. In the second challenged ruling, the district
    court excluded testimony that Lori Kahre instructed another
    witness to pay her own taxes.18 This proffered testimony, if
    admitted, “would have been hearsay . . . about defendants’
    state of mind at the time, a subject about which they could be
    examined and cross-examined if they took the stand. But as
    a second-hand statement of memory or belief to prove the fact
    remembered . . . it is not only hearsay, but irrelevant
    hearsay.” United States v. Bishop, 
    291 F.3d 1100
    , 1110–11
    (9th Cir. 2002) (internal quotation marks omitted).19
    Therefore, the district court did not plainly err in excluding it.
    Regardless, any error in excluding the testimony was
    harmless. See 
    id. at 1108
     (“Not every hearsay error amounts
    to a constitutional violation. At a minimum, a defendant
    18
    Because Appellants did not argue before the district court that the
    testimony was admissible pursuant to Fed. R. Evid. 803(3), we review for
    plain error. See United States v. Orm Hieng, 
    679 F.3d 1131
    , 1135 (9th
    Cir. 2012) (“We review evidentiary rulings to which no objection was
    made for plain error.”) (citation omitted).
    19
    Appellants make the additional argument that the district court
    violated their due process rights by admitting evidence of their good faith
    beliefs only if Appellants testified. However, the district court actually
    permitted Appellants to offer proof of their good faith beliefs through
    other sources. Appellants also testified during trial, providing the best
    evidence of their good faith beliefs. See Bishop, 
    291 F.3d at 1110
     (“The
    best evidence would be the defendant’s own testimony. . . .”).
    46                   UNITED STATES V. KAHRE
    must demonstrate that the excluded evidence was important
    to his defense. . . .”) (citation and alteration omitted). Not
    only was the government’s case exceptionally strong, but
    Kahre, Lori, and Loglia each testified extensively about the
    good faith underlying their belief that the gold payment
    system was legal. See Bishop, 
    291 F.3d at 1110
     (“Such
    [third-party] testimony may fall under the state of mind
    exception to the rule against hearsay, but it would still be
    self-serving, and duplicative of the defendants’ own
    testimony about their state of mind, if they chose to
    testify. . . .”) (internal quotation marks omitted).20
    E. The District Court’s Partiality
    Appellants contend that a new trial is warranted because
    of the district court’s partiality, as evidenced by its improper
    comments and conduct.
    “We will reverse a trial court for excessive judicial
    intervention only in cases of actual bias . . . or if the judge’s
    remarks and questioning of witnesses projected to the jury an
    appearance of advocacy or partiality, and the alleged
    20
    Appellants further contend that the district court erred in excluding an
    IRS agent’s report that a prior investigation had been closed for lack of
    criminal intent. However, Appellants were not prejudiced, as the IRS
    agent testified and confirmed his conclusions regarding the lack of proof
    of criminal intent.
    Appellants also argue that the district court erred in excluding
    evidence concerning the amount of force used against Lori Kahre during
    the search. Although Appellants cited no specific ruling, it appears that
    the district court excluded evidence related to the searches as irrelevant
    and potentially prejudicial. Here too, the exclusion at issue was not
    prejudicial, because Lori’s testimony completely elucidated every aspect
    of her defense.
    UNITED STATES V. KAHRE                      47
    misconduct had a prejudicial effect on the trial.” United
    States v. Scott, 
    642 F.3d 791
    , 799 (9th Cir. 2011) (citation and
    internal quotation marks omitted). “Before a jury’s verdict
    will be overturned because of the conduct of a trial judge in
    rebuking or punishing an attorney or otherwise intervening in
    the proceedings, it must appear that the conduct measured by
    the facts of the case presented together with the result of the
    trial, was clearly prejudicial to the rights of the party.” 
    Id.
    (citation omitted). “The assessment is to be made, moreover,
    in light of the evidence of guilt.” 
    Id.
     (citation omitted).
    Appellants urge the conclusion that the district court
    utilized prejudicial analogies when explaining its evidentiary
    rulings to the jury. For example, the district court explained
    that the silver coins could be placed into evidence, but could
    not be sent back with the jury for jurors to examine, just as
    narcotics can be placed in evidence, but not sent back with
    the jury. The district court analogized the chain of custody
    utilized in narcotics cases to the introduction of records
    seized from a residence. The district court also utilized what
    it characterized as the “ridiculous example” of an organized
    crime figure having a business purpose in the process of
    addressing whether a witness could testify regarding a
    possible business purpose underlying Kahre’s payroll system.
    Although the district court utilized analogies, its
    comments did not undermine Appellants’ defense. It is
    presumed that the jury followed the district court’s
    instructions that it was not to give any weight to the court’s
    explanatory comments. See Scott, 
    642 F.3d at 800
    . These
    comments do not justify a new trial, particularly in view of
    the strong evidence of guilt. See 
    id. at 799
    .
    48                UNITED STATES V. KAHRE
    Although Appellants complain that the district court
    improperly objected to the defense’s cross-examination and
    denigrated counsel, the record does not reflect that the district
    court interfered with or impeded the defense’s cross-
    examination at all. Contrary to Appellants’ assertion that the
    district court denigrated counsel by impermissibly objecting
    to the defense’s cross-examination, the record reflects that the
    district court interrupted those questions that were deemed
    irrelevant or inappropriate. For example, the district court
    interrupted defense counsel when he asked a witness if
    escrow could close if “the person may not have remembered
    signing it because they were intoxicated when they signed
    it[.]” The district court also interrupted a witness who was
    reading from documents although the witness lacked any
    personal knowledge of the transaction related to the
    documents. When defense counsel argued that government
    witnesses had been allowed to read from documents, the
    district court replied that “[t]o the extent the Government did
    it and nobody objected, they shouldn’t have. . . .” The other
    asserted instances in which the district court interrupted
    cross-examination similarly reflect that the district court
    properly intervened to frame the questioning. Appellants
    made no showing that the district court’s rulings in
    controlling the proceedings were incorrect, or that they were
    unable to mount an effective defense. In sum, the district
    court did not improperly impede Appellants’ presentation of
    their case. See United States v. Gurolla, 
    333 F.3d 944
    , 958
    (9th Cir. 2003) (explaining that the district court’s rulings
    regarding cross-examination constitute reversible error only
    in the event the rulings resulted in the denial of a fair trial).
    Appellants’ assertion that the district court interrupted
    Loglia’s testimony and denigrated Loglia’s good faith belief
    in the wage payment system is similarly unavailing. During
    UNITED STATES V. KAHRE                      49
    his testimony, Loglia stated that he relied in part on Civil War
    era cases for his use of gold and silver coins for wage
    payments. The district court did not denigrate Loglia’s
    reliance on the case law. Rather, the district court accurately
    clarified that the weight the jury gave to a legal opinion
    admitted into evidence may be affected by changes in legal
    precedent. By way of example, the district court simply
    remarked that an individual could not rely in good faith on
    “Plessy v. Ferguson that used to say separate but equal was
    okay in schooling. . . .” The district court also did not commit
    reversible error when it merely observed that prior case law
    did not “represent the law that applies to this case, nor did it
    ever, by the way. It’s the effect on Mr. Loglia that counts.”
    Contrary to Appellants’ assertions, neither did the district
    court denigrate Loglia’s reliance on an IRS letter that
    purportedly supported the wage payment system. The
    government objected to admission of the letter based on its
    lack of authentication, and the district court innocuously
    remarked that it was not uncommon for government letters to
    be fabricated. However, the district court admitted the letter
    into evidence because “if [Loglia] actually got the document
    and relied on it, thinking it was real, that’s what counts. It’s
    not whether in fact it was real.”
    Appellants further contend that the district court
    impermissibly explained the government’s theory of the case
    when making its evidentiary rulings. Appellants fault the
    district court for commenting on the government’s theory that
    Lori Kahre acted as a straw buyer for the silver coins; that the
    government’s charges were based on a conspiracy; that the
    government’s argument was that the gold clause contracts
    were a sham; and that the government’s challenge to a
    witness was premised on the witness’s bad acts. However,
    50                UNITED STATES V. KAHRE
    the record reflects that the district court did not impermissibly
    explain the government’s theory. Instead, the district court
    merely remarked that “[o]ne of the contentions of the
    Government in this case is that Ms. Kahre was simply a straw
    buyer and that the real owner was Mr. Kahre . . . So that’s for
    the jury to decide,” and that “it is the Government’s
    contention these people were all in conspiracy together. So
    I don’t know what your objection is.” In permitting
    testimony concerning an unindicted coconspirator, the district
    court simply observed that waiver of the hearsay rule was
    warranted “[b]ecause it’s the whole government theory the
    reason [the unindicted coconspirator] was doing all these
    chicaneries was because he was in league with
    [Appellants]. . . .” The district court also passively noted the
    government’s position that a gold clause contract utilized by
    Appellants was “a sham because it’s a device by which they
    are alleging Mr. Kahre used to avoid paying taxes. That is
    what they’re claiming.”
    In each case, the district court referred to the
    government’s theory as it related to evidentiary issues and
    clarified that it was within the province of the jury to
    determine the validity of the government’s theory. Thus, we
    conclude that Appellants are not entitled to a new trial based
    on the district court’s comments or conduct. Our conclusion
    is further supported by the strength of the government’s case,
    and the court’s curative instructions. See Scott, 
    642 F.3d at 800
    .
    F. Robert Kahre’s Sentence
    Kahre challenges the district court’s calculation of his
    adjusted offense level and of the applicable guideline range,
    UNITED STATES V. KAHRE                            51
    both of which were largely attributable to the tax loss
    associated with his crimes of conviction.
    “The government bears the burden of establishing the
    base offense level, and, hence, here, the amount of tax loss,
    by a preponderance of the evidence.” United States v.
    Montano, 
    250 F.3d 709
    , 713 (9th Cir. 2001) (citation
    omitted). “Under the preponderance of the evidence
    standard, the relevant facts must be shown to be more likely
    true than not.” 
    Id.
     (citations and internal quotation marks
    omitted). “In determining the total tax loss attributable to the
    offense, all conduct violating the tax laws should be
    considered as part of the same course of conduct or common
    scheme or plan unless the evidence demonstrates that the
    conduct is clearly unrelated.” Bishop, 
    291 F.3d at 1115
    (citation and alteration omitted). “Tax loss is determined
    from the reasonably foreseeable conduct of all co-actors, not
    just the defendant’s own conduct. . . .” 
    Id.
     (citation and
    alteration omitted).
    Kahre asserts that, because his workers were independent
    contractors, the district court erred in calculating a tax loss
    premised on payroll taxes for employees.
    The IRS has established a twenty-factor test to
    differentiate an employee from an independent contractor for
    tax purposes.      See IRS Rev. Rul. 87-41 (1987).21
    21
    The factors include: (1) the employer’s right to require the worker’s
    compliance with instructions; (2) the employer’s training requirements;
    (3) the integration of the worker’s services into the employer’s business;
    (4) the worker’s personal rendering of services; (5) the employer’s hiring,
    supervision, and payment of assistants; (6) a continuing relationship
    between the employer and the worker; (7) the employer’s setting of hours;
    (8) the employer’s requirement of full-time service; (9) performance of
    52                   UNITED STATES V. KAHRE
    “[G]enerally the relationship of employer and employee
    exists when the person or persons for whom the services are
    performed have the right to control and direct the individual
    who performs the services, not only as to the result to be
    accomplished by the work but also as to the details and means
    by which that result is accomplished. . . .” 
    Id.
     “Thus, if such
    a relationship exists, it is of no consequence that the
    employee is designated as a partner, coadventurer, agent,
    independent contractor, or the like.” 
    Id.
    The trial testimony amply supports the district court’s
    finding that Kahre’s employees were not independent
    contractors. Rodriguez testified at length regarding the
    control Kahre exercised over his employees’ work, and
    expressly acknowledged that the employees were not
    independent contractors. The district court instructed the jury
    that it was required to apply the twenty-factor test and
    determine whether Kahre’s workers were employees or
    independent contractors. Having followed that instruction,
    the jury found Kahre guilty on all counts. Given the evidence
    and the jury’s findings from that evidence, the district court
    did not err in finding that Kahre failed to pay the requisite
    payroll taxes for his employees, or in calculating the amount
    work on the employer’s premises; (10) the worker’s performance of
    services in a sequence set by the employer; (11) the employer’s
    requirement that the worker submit oral or written reports; (12) payments
    on an hourly, weekly, or monthly basis; (13) the employer’s payment of
    business or travel expenses; (14) the employer’s furnishing of materials
    or tools; (15) lack of significant investment in the facilities by the worker;
    (16) lack of realization of loss or profit by the worker; (17) lack of work
    for multiple firms by the worker; (18) lack of availability of the worker’s
    services to the general public; (19) the employer’s right to discharge the
    worker; and (20) the worker’s right to terminate her or his services. See
    IRS Rev. Rul. 87-41.
    UNITED STATES V. KAHRE                           53
    of loss from the tax scheme. See Bishop, 
    291 F.3d at 1115
    (reasoning that tax loss is to be calculated in view of the
    totality of the tax evasion scheme).22
    Kahre maintains that he was not responsible for
    withholding taxes from wages paid to employees of the
    thirty-five businesses that utilized his payroll services.
    However, “[i]n determining the total tax loss attributable to
    the offense, all conduct violating the tax laws should be
    considered as part of the same course of conduct or common
    scheme or plan unless the evidence demonstrates that the
    conduct is clearly unrelated. . . .” 
    Id.
     (citation and alteration
    omitted) (emphasis added). Kahre was responsible for “the
    reasonably foreseeable conduct of all co-actors, not just [his]
    own conduct. . . .” 
    Id.
     This means that Kahre was indeed
    responsible for the conduct of the businesses that utilized his
    payroll services, particularly since trial testimony revealed
    that Kahre devised these payroll services, and administered
    them in the same illicit manner as his own. The district court,
    therefore, did not err in determining it was more likely than
    not that the tax loss incurred from these utilizing companies
    was attributable to Kahre.
    22
    Kahre maintains that two of his several hundred employees were
    independent contractors as noted in their plea agreements. However,
    classification of two individuals as independent contractors would not
    undermine the district court’s findings regarding the status of the
    overwhelming majority of the employees. See Montano, 
    250 F.3d at 713
    (“Under the preponderance of the evidence standard, the relevant facts
    must be shown to be more likely true than not.”) (citations and internal
    quotation marks omitted). Given the trial testimony reflecting the
    extensive nature of Kahre’s payroll scheme involving several hundred
    employees, Kahre’s argument is unavailing.
    54                   UNITED STATES V. KAHRE
    Contrary to Kahre’s assertions, the evidence elicited
    during trial also supports the district court’s adoption of the
    calculation in the PSR of a total tax liability of
    $57,435,803.52.       The total tax liability included
    $51,739,337.52 in unpaid payroll taxes and $5,696,466.10
    Kahre owed in income taxes from 1992 to 2008. Agent
    Rickey testified that Kahre earned unreported income of
    $10,758,167.32 in fees from his payroll services, and Agent
    Cutler calculated that Kahre earned unreported income of
    $1,956,739 from his companies. These figures more than
    sufficiently support the district court’s tax liability
    determination.23
    Kahre next takes issue with the obstruction of justice
    enhancement, arguing that he did not attempt to conceal his
    gold and silver payroll system from the IRS, testified
    honestly about his failure to pay his personal income taxes,
    and had a good faith belief that his activities were legal.
    However, the obstruction of justice enhancement was
    premised on Kahre’s false trial testimony. The indictment
    alleged that Kahre engaged in a conspiracy to defraud the IRS
    by placing “real property, which he in fact owned, controlled
    23
    Kahre also appears to challenge the amount of restitution stemming
    from the calculation of his total tax liability. Although Kahre asserts that
    there was no factual basis for the restitution amount, the PSR explained
    that the $16,000,000 restitution amount was calculated from $5,168,313
    due in income taxes and $10,891,791.72 due in payroll taxes. Because the
    district court properly determined Kahre’s tax liability using these figures,
    Kahre cannot establish clear error in similarly calculating the restitution
    amount. See United States v. Yeung, 
    672 F.3d 594
    , 600 (9th Cir. 2012)
    (“We review factual findings supporting an order of restitution for clear
    error.”) (citation omitted); see also United States v. Jenkins, 
    884 F.2d 433
    ,
    440 (9th Cir. 1989) (observing that restitution is based on the total tax
    liability).
    UNITED STATES V. KAHRE                      55
    and otherwise benefitted from, located at 6295 Grand Canyon
    Drive, Las Vegas, Nevada, in the name of a nominee,
    specifically defendant Danille D. Cline.” During trial, Kahre
    testified that he could not have signed a false loan application
    on behalf of Cline in Las Vegas on September 11, 2001,
    because he was in Oregon on that date. Kahre’s testimony
    was belied by currency transaction reports reflecting that
    Kahre cashed checks for $65,000, $143,918, and $26,031
    around that date in Las Vegas. The PSR recommended an
    obstruction enhancement because Kahre “provided materially
    false information while testifying at trial.” In support of the
    PSR’s recommendation, the government argued that “[t]he
    enhancement relates to the false testimony that . . . Kahre
    made at trial concerning his whereabouts on September 11,
    2001, the day when he and defendant Cline met with Tom
    Browne to sign a false home loan application for the purchase
    of 6295 N. Grand Canyon Drive.” The district court adopted
    the PSR’s recommendation and held that the obstruction of
    justice enhancement was supported “by more than a
    preponderance of the evidence, in fact, by clear and
    convincing evidence . . .” Kahre does not effectively rebut
    the district court’s finding that he committed perjury when he
    testified. See United States v. Armstrong, 
    620 F.3d 1172
    ,
    1176 (9th Cir. 2010) (“A witness commits perjury if he gives
    false testimony under oath or affirmation, concerning a
    material matter, with the willful intent to provide false
    testimony, rather than as a result of confusion, mistake, or
    faulty memory. The sentencing judge need only find by a
    preponderance of the evidence that the defendant committed
    perjury.”) (citations, footnote reference, and internal
    quotation marks omitted).
    The district court’s obstruction of justice enhancement is
    not negated because Kahre terminated his payroll system after
    56                  UNITED STATES V. KAHRE
    the district court ruled that it was illegal. As discussed, there
    was ample legal precedent establishing the illegality of
    Kahre’s conduct prior to the district court’s ruling to that
    effect. Unsurprisingly, the district court relied on that
    existing legal precedent to formulate its conclusion that
    Kahre’s conduct was illegal. Kahre continued to use the gold
    and silver coins after the search warrants were executed, and
    apparently only ceased use of his scheme after being indicted.
    We affirm the district court’s calculation of the guidelines
    range and its related determination of the restitution amount.24
    Kahre’s argument that his sentence is disproportionate is
    not persuasive. “The district court was not required to
    conform the sentence to those imposed in similar cases . . .
    Although comparability is a legitimate sentencing factor,
    divergence from sentences imposed in similar cases is
    permissible so long as the court is attentive to relevant
    sentencing factors, as the district court was here.” United
    States v. Burgum, 
    633 F.3d 810
    , 813–14 (9th Cir. 2011)
    (citation omitted). “A district court need not, and, as a
    practical matter, cannot compare a proposed sentence to the
    sentence of every criminal defendant who has ever been
    sentenced before. Too many factors dictate the exercise of
    sound sentencing discretion in a particular case to make the
    inquiry [Kahre] urges helpful or even feasible. . . .” United
    States v. Treadwell, 
    593 F.3d 990
    , 1012 (9th Cir. 2010)
    (citation omitted). Kahre’s below-guidelines sentence
    24
    Because the district court did not clearly err when it enhanced Kahre’s
    sentence for obstruction of justice, Kahre cannot establish clear error in
    the court’s rejection of a downward adjustment for acceptance of
    responsibility. See Rosas, 
    615 F.3d at
    1066–67 (explaining that an
    obstruction of justice enhancement “ordinarily indicates” that the
    defendant has failed to accept responsibility).
    UNITED STATES V. KAHRE                      57
    imposed for the extensive illegal payroll scheme with its
    associated tax loss, was comparable to sentences for similar
    crimes, and was reasonable. See United States v. Bendtzen,
    
    542 F.3d 722
    , 729 (9th Cir. 2008) (“Because a Guidelines
    sentence will usually be reasonable, [Kahre’s] below-
    Guidelines sentence, supported by the district court’s specific
    reasoning, is reasonable.”) (citation and internal quotation
    marks omitted).
    IV.    CONCLUSION
    We affirm Appellants’ convictions and Robert Kahre’s
    sentence. Dismissal of the indictments was not warranted.
    Appellants had sufficient notice of the illegality of relying on
    the face value of coins to avoid paying taxes. Longstanding
    and consistent statutory, regulatory, and court precedent
    informed the public that gold and silver coins are assessed at
    fair market value for tax purposes when used to pay wages.
    We hold that prosecutors must be removed from a case
    only if “clear and convincing evidence of a conflict is
    presented.” Kember, 
    685 F.2d at 459
    . Appellants failed to
    present such “clear and convincing evidence.” It follows that
    the district court did not abuse its discretion in denying
    Appellants’ motions to disqualify the prosecutor.
    The district court properly denied as moot Kahre’s initial
    motion to suppress because none of the seized evidence was
    introduced at trial. Alternatively, Kahre’s arrest and the
    corresponding search were legally conducted pursuant to a
    state bench warrant. The district court correctly denied
    Kahre’s subsequent motion to suppress because the warrants
    incorporated the accompanying affidavit, which possessed the
    requisite specificity limiting the agents’ discretion.
    58               UNITED STATES V. KAHRE
    The district court did not abuse its discretion in excluding
    evidence challenging the legal import of its ruling that gold
    and silver coins used to pay wages were to be assessed at fair
    market value for tax purposes. The district court correctly
    recognized that the coins were taxable as property based on
    their fair market value. See Cal. Fed. Life Ins. Co., 
    680 F.2d at 86
    . Neither did the district court commit reversible error
    in excluding testimony of Appellants’ contemporaneous
    statements concerning their tax theories. In each instance the
    exclusion was neither an abuse of discretion, see Hinkson,
    
    585 F.3d at 1263
    , nor prejudicial. The district court also
    acted within its discretion when it excluded, as irrelevant and
    prejudicial, evidence of the federal agents’ use of force during
    execution of the search warrants. In sum, the district court
    did not engage in any misconduct warranting a new trial.
    Finally, the district court did not err when sentencing
    Robert Kahre. The district court’s calculation of Kahre’s tax
    liability and the corresponding restitution amount was
    supported by the evidence presented at trial and by the jury’s
    findings. The district court’s enhancement of Kahre’s
    sentence for obstruction of justice and denial of a downward
    adjustment for acceptance of responsibility were consistent
    with the historical record. Kahre’s below-guidelines sentence
    was reasonable and was not disproportionately severe when
    compared to analogous sentences.
    AFFIRMED.