United States v. Sain ( 1998 )


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  •                                                                                                                            Opinions of the United
    1998 Decisions                                                                                                             States Court of Appeals
    for the Third Circuit
    4-10-1998
    United States v. Sain
    Precedential or Non-Precedential:
    Docket 97-3114,97-3115
    Follow this and additional works at: http://digitalcommons.law.villanova.edu/thirdcircuit_1998
    Recommended Citation
    "United States v. Sain" (1998). 1998 Decisions. Paper 78.
    http://digitalcommons.law.villanova.edu/thirdcircuit_1998/78
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    Filed April 10, 1998
    UNITED STATES COURT OF APPEALS
    FOR THE THIRD CIRCUIT
    Nos. 97-3114 & 97-3115
    UNITED STATES OF AMERICA
    v.
    SAMIR K. SAIN,
    Appellant No. 97-3114
    UNITED STATES OF AMERICA
    v.
    ADVANCED ENVIRONMENTAL CONSULTANTS, INC.,
    Appellant No. 97-3115
    Appeal from the United States District Court
    For the Western District of Pennsylvania
    D.C. Nos. 96-cr-00021-01 &
    96-cr-00021-02
    Argued January 22, 1998
    Before: SLOVITER, LEWIS and ROSENN, Circuit Judges
    (Opinion Filed April 10, 1998)
    Thomas J. Farrell (argued)
    Bonnie R. Schlueter
    Office of United States Attorney
    633 United States Post Office &
    Courthouse
    Pittsburgh, PA 15219
    Counsel for Appellee
    Bruce A. Antkowiak (argued)
    One Northgate Square
    Greensburg, PA 15601
    Counsel for Appellants
    J. Daniel Hull
    Rhoda S. Neft
    April L. Boyer
    J.D. Hull Associates
    600 Grant Street
    4949 USX Tower
    Pittsburgh, PA 15219
    Counsel for Advanced Environmental
    Consultants, Inc.
    OPINION OF THE COURT
    ROSENN, Circuit Judge.
    This case primarily presents two questions of first
    impression in this circuit relating to the interpretation of
    the Major Fraud Act of 1988 (the "Act"). See 18 U.S.C.
    S 1031 (West 1997). The Act makes it a federal crime to
    defraud the United States in connection with a government
    contract that is valued in excess of $1 million. Specifically,
    we must decide whether a defendant may be charged with
    a separate violation of the Act for each of numerous
    executions of a single fraudulent scheme, and whether
    modifications of the original government contract, each of
    which have a value of less than $1 million, are within the
    purview of the Act when the underlying government
    contract has a value in excess of $1 million. The defendants
    make other arguments relating to the sufficiency of the
    evidence, the exclusion of expert testimony, whether an
    individual can be convicted of aiding and abetting a
    corporation he owns and controls, and alleged defects in
    their sentences. The district court rejected the defendants'
    arguments. We affirm as to all issues.*
    _________________________________________________________________
    * Although Judge Lewis heard argument in this case, he has been
    unable, however, to clear this written opinion because of illness.
    2
    I.
    A federal grand jury sitting in the Western District of
    Pennsylvania indicted Samir K. Sain and his company,
    Advanced Environmental Consultants, Inc. ("AEC"), on 46
    counts of fraud in violation of the Act. Following trial, the
    petit jury returned guilty verdicts on all counts as to both
    defendants. The district court sentenced Sain to 37 months
    imprisonment and three years supervised release. The court
    sentenced AEC to five years probation and ordered it to pay
    a special assessment. In addition, the court ordered AEC to
    pay $597,124 in restitution, with any amount not paid by
    AEC to be paid by Sain. The defendants appealed.1
    II.
    This complex fraud case arises out of an approximately
    $7-million contract between the United States Army and
    AEC, pursuant to which AEC built, owned, and operated a
    waste-water treatment plant at the Army Depot at Tooele,
    Utah. AEC is an environmental consulting company
    headquartered in Pittsburgh and incorporated in
    Pennsylvania. Sain has a masters degree in engineering
    and several credits toward a doctorate, is a licensed
    professional engineer, and is the sole shareholder and
    president of AEC.2 It is well established that, because the
    jury returned guilty verdicts in the district court, this Court
    must construe the evidence in the light most favorable to
    the Government. See, e.g., Glasser v. United States, 
    315 U.S. 60
    , 80 (1941); United States v. Cooper, 
    121 F.3d 130
    ,
    133 (3d Cir. 1997). Following is a statement of facts which
    the jury could have found based on the trial evidence.
    The Army operates a depot in Tooele, Utah, at which it
    _________________________________________________________________
    1. The district court had subject-matter jurisdiction of the case pursuant
    to 18 U.S.C. S 3231. This Court has appellate jurisdiction pursuant to 28
    U.S.C. S 1291 and 18 U.S.C. S 3742(a)(2).
    2. Until several days before trial, Sain claimed to hold a Ph.D. in
    engineering from the University of Pittsburgh. He made this
    representation to the Army when he bid on the contract. Just prior to
    trial and on cross-examination at trial, he admitted that he did not hold
    such a degree.
    3
    services tanks and other types of military vehicles.
    Sometime in the 1980s, the Army entered into a consent
    decree with the State of Utah requiring the Army to treat
    the waste water it was generating at the depot and
    releasing into the ground water. To fulfill its obligation
    under this consent decree, the Army proposed to have a
    contractor build, own, and operate a plant to treat the
    depot's waste water. After the bidding process, AEC was
    selected. On November 30, 1987, AEC entered into the
    contract with the Army. Under the contract, AEC agreed to
    construct, own, and operate an industrial waste-water
    treatment plant at the depot for the "firm fixed price" of
    approximately $4.5 million. In a firm fixed price contract,
    once the price is established by the parties, the amount
    paid to the supplier of the goods or services does not vary
    with its costs. In this case, the risk of cost overruns rested
    with AEC. The term of the contract was for one year
    followed by four one-year options. The Army exercised each
    option and the contract lasted the full five years.
    In the plant, AEC installed four large metal tanks called
    "adsorbers." Each of the tanks was designed to hold
    approximately 5,000 pounds of filtering carbon. Waste
    water would be pumped through the tanks with the carbon
    filtering out much of the water's pollutants. Periodically, as
    pollutants built up in the carbon, the carbon would become
    ineffective and have to be replaced. The process of replacing
    the carbon was called a "change out." The contract provided
    for two of these change outs per year at AEC's expense and
    did not specify the type of carbon to be used.
    After the Army and AEC entered into the contract, but
    before AEC began operating the plant, the Army modified
    the contract to incorporate the City of Tooele's water purity
    standards which were more strict than those imposed by
    the consent decree. The Army requested that AEC submit a
    cost proposal providing for the Army to reimburse AEC for
    its increased costs resulting from these stricter water purity
    standards. Ultimately, AEC submitted four cost proposals,
    none of which were approved by the Army. Instead, on April
    11, 1989, the Army unilaterally imposed a modification of
    the contract pursuant to which AEC would receive
    approximately $682,000 in addition to the original contract
    price.
    4
    In the spring of 1989, before the Army had acted on
    AEC's fourth cost proposal, AEC claimed that the waste
    water generated by the Army consistently contained a
    higher level of pollutants than the amounts specified in the
    contract. According to AEC, this higher level of pollutants
    required more than the two carbon change outs per year
    allowed by the contract. In an attempt to recoup these
    additional costs, AEC began submitting claims to the Army
    for reimbursement for costs associated with the additional
    change outs. On May 5, 1989, May 26, 1989, and June 20,
    1989, AEC submitted claims. Each claim was for $27,500
    and purported to represent the costs associated with a
    complete change out of the four tanks plus a 10-percent
    profit for AEC. According to the claims, AEC installed 5,000
    pounds of carbon in each of the four tanks at a cost of
    $1.25 per pound of carbon, a price which corresponded to
    the market price for virgin carbon.
    The Army agreed that these changed conditions
    warranted an equitable adjustment of the contract to
    compensate AEC for the costs of some of the additional
    carbon change outs. Lieutenant Colonel K. L. Andrews, the
    Army officer responsible for administering the AEC contract
    during most of the relevant time, notified Sain in a letter
    dated April 25, 1989 that no money would be paid to AEC
    by the Army for the additional carbon change outs unless
    AEC first submitted "documentation necessary to support a
    claim." Andrews advised that such documentation include
    "cost invoices, time sheets, and any other [necessary]
    documentation." Also, at trial, Andrews testified that, in
    addition to the notification letter, he told Sain numerous
    times that supporting documentation was required in order
    for AEC to receive payment. At trial, Sain reluctantly
    conceded that Andrews had required this documentation.
    According to the testimony of Andrews and Robert
    Kinsinger, the Army's technical representative at the waste-
    water plant, prior to agreeing to reimburse AEC for the
    additional change outs, Sain insisted to them that the
    heavy pollutant levels in the waste water required the use
    of virgin carbon, a more expensive type of carbon than
    reactivated carbon.3 Sain also insisted that 5,000 pounds of
    this carbon per tank, or 20,000 pounds total, must be used
    _________________________________________________________________
    3. Virgin carbon has not been previously used in water purification.
    Reactivated carbon has been previously used to filter water and heated
    to high temperatures in order to rid the carbon of the impurities and re-
    open its pores.
    5
    in each change out.
    To substantiate the initial costs associated with the
    additional change outs, Sain submitted to the Army a copy
    of an invoice numbered "326" and dated January 9, 1989
    which purported to show that AEC had purchased 100,000
    pounds of carbon from a company called Encotech for
    $1.25 per pound. This price corresponded to the market
    price for virgin carbon and included a charge for
    installation. Sain also submitted to the Army a September
    5, 1989 letter on Encotech letterhead which stated that
    AEC had previously purchased the 100,000 pounds of
    carbon for the price stated in invoice number 326.
    It is undisputed that the invoice and letter were false.
    Both Sain and Encotech's owner, Bernard Lalli, testified
    that the carbon order had been canceled on January 15,
    1989 and that the carbon was not delivered. Sain also
    admitted "whiting out" the portion of the original invoice
    which contained a notation that the order had been
    canceled and that he had assisted Lalli in drafting the
    September 5 letter. Sain claimed that the invoice
    represented future costs. Sain had, however, purchased
    some carbon from Encotech during this time, although it
    was not virgin carbon. AEC initially ordered 50,000 pounds
    of virgin carbon at $1.18 per pound. AEC never took
    delivery of this virgin carbon. Instead, Sain asked Lalli to
    substitute 100,000 pounds of the less expensive,
    reactivated carbon, which Lalli did for a price of $.59 per
    pound. On other occasions, Sain similarly represented to
    the Army that he had purchased virgin carbon. He did not
    take delivery of this carbon and substituted cheaper,
    reactivated carbon without informing Army officials.
    Based on Sain's representations regarding the price of
    the carbon used in the additional change outs, the Army
    agreed to reimburse AEC $1.2455 per pound of carbon for
    the 20,000 pounds used per change out, plus 10-percent
    profit for a total of $27,401 per change out. AEC and the
    Army memorialized this agreement in Contract Modification
    14 which reimbursed AEC for the three claims previously
    submitted. In part, the modification stated: "The costs
    associated with this claim are a replacement of 60,000 lbs.
    of virgin carbon (3 change outs/20,000 lbs. per change)
    6
    and the labor and fees involved. ... All other terms and
    conditions in the contract remain the same." Sain
    acknowledged on cross-examination that he understood the
    purpose of the modification was to reimburse him for the
    three change outs using 60,000 pounds of virgin carbon.
    Sain made an additional 43 claims for reimbursement for
    costs associated with the additional carbon change outs. To
    support these claims, he submitted false and canceled
    supplier invoices. He concealed from the Army invoices
    showing the purchase of reactivated carbon, and he falsely
    certified that AEC had used 20,000 pounds of virgin carbon
    per change out when, in fact, it had not done so. In
    connection with Contract Modification 20, which covered
    the six claims following the original three, Sain submitted
    a purchase order from Encotech which showed the
    purchase of 100,000 pounds of virgin carbon for $99,000
    and a copy of a $99,000 check from an AEC checking
    account. Sain, however, canceled the invoice, voided the
    check, and never took delivery of this carbon. He also
    included in the supporting documentation an invoice for
    25,000 pounds of virgin carbon priced at $1.18 per pound
    which AEC never received. Instead, AEC substituted 50,000
    pounds of reactivated carbon. He also admitted to failing to
    submit documentation showing that he had used
    reactivated carbon.
    Sain supported an additional 10 of the claims by using
    checks and purchase orders relating to a different supplier,
    Water Equipment Supply ("WES"), which was a sole
    proprietorship that Sain created. WES had no operations or
    employees. Sain instructed Lalli to bill WES for reactivated
    carbon that Encotech had shipped to AEC. WES then billed
    AEC for the carbon at highly inflated prices, misdescribing
    the carbon in the invoice. In these transactions, WES
    purchased 155,768 pounds of reactivated carbon from
    Encotech at prices ranging from $.32 to $.50 per pound.
    WES then billed AEC for 238,000 pounds of carbon at $.93
    per pound and for another 100,000 at $.87 per pound. AEC
    paid these amounts to WES, but WES transferred the funds
    back to AEC and Sain. Sain instructed an AEC employee to
    describe the carbon on the WES invoices as "Iodine 1000
    and up 10/40(v)." "Iodine 1000" refers to the density of the
    7
    carbon. The iodine level of carbon is determined by a
    standardized test. Reactivated carbon of this iodine level
    would have been very expensive and very rare. The carbon
    provided by Encotech did not have this high iodine number
    when supplied to AEC and the standard test had not been
    performed on it, although Sain testified that he used his
    own "test" to determine the iodine level.
    In 1991, Army officials began to suspect that Sain was
    not using the quantity and quality of carbon called for in
    the contract modifications. They conducted an investigation
    which appeared to confirm their suspicions that Sain was
    using fewer than five of the 1,000-pound bags of carbon per
    tank. When confronted, Sain stated that each 1,000-pound
    bag contained 1,400 pounds. He testified to the same at
    trial, but admitted never calculating the exact weight of the
    bags. He also claimed that he had estimated how much
    volume 5,000 pounds would occupy and used that amount.
    Sain called this method "volumetric calculation." At this
    time, despite its investigation, the Army was unable to
    uncover sufficient evidence of Sain's fraud. However, on
    September 29, 1992, the Army added language to Contract
    Modification 33 which reaffirmed that payment of the
    $27,401 was contingent on Sain's use of 5,000 pounds of
    "pure, virgin activated carbon" per tank. 4 Sain signed that
    modification.
    On December 14, 1992, the Army withheld payment of
    $211,800 that Sain had previously claimed and requested
    that AEC account for all of the carbon purchased and
    installed at the plant. Sain told the Army's representatives
    that his attorney, Keith Baker, would provide the requested
    information. Baker supplied a letter, a summary, and 18
    _________________________________________________________________
    4. The modification read:
    The unit pricing for the above identified claims is based on the
    quantities (5,000 pounds) and quality (pure, virgin activated
    carbon)
    which formed the mutual agreement in Modification Number
    P00014. In the event the quantity and/or quality of carbon material
    used in these carbon changes is found to be less than that upon
    which Modification Number P00014 is based, the Government
    reserves the right to adjust the Contract Amount to reflect such
    cost
    difference.
    8
    invoices to the Army which purported to show that AEC
    had purchased and used 1,056,050 pounds of carbon. This
    matched almost exactly the amount of carbon which would
    have been used if AEC had installed 5,000 pounds per tank
    for the 212 change outs it had performed. In reliance on
    the representations in the summary submitted to it, the
    Army paid Sain much of the money he requested, reducing
    the payment for the last nine change outs to $16,409.67
    per change out because the AEC-supplied documents
    showed that AEC paid only $.72 per pound of carbon
    during this time. At trial, Sain conceded that the numbers
    Baker supplied were incorrect. The Government established
    that AEC had actually purchased only 795,818 pounds of
    carbon and 24 of the 1,000-pound bags remained unused.
    Sain claimed that the omissions and misstatements in the
    letter, summary, and supporting documents were mistakes
    and denied that he intended to defraud the Army.
    After an investigation, the grand jury indicted Sain and
    AEC for engaging in a scheme to defraud the Army. The
    indictment alleged that Sain and AEC falsely represented
    that only virgin carbon in 5,000-pound amounts was
    capable of properly cleaning the water. The indictment
    further alleged that AEC and Sain represented that they
    used this type and amount of carbon although oftentimes
    they were using reactivated carbon in lesser amounts and
    pocketing the difference in price. There is no dispute that
    the reactivated carbon in amounts of less than 5,000 used
    by AEC treated the waste water to the satisfaction of the
    Army and in compliance with the consent decree.
    III.
    On appeal, Sain and AEC make several arguments why
    their convictions should be reversed or sentences modified.
    We address each in turn. AEC did not file a separate brief
    and, where appropriate, has adopted Sain's arguments.
    A.
    Sain first argues that the district court erred in denying
    his motion for a judgment of acquittal on the ground that
    the evidence did not prove that he engaged in a fraudulent
    9
    scheme. We address Sain's sufficiency of the evidence
    argument first because, if he is correct, we would be
    required to order the district court to enter a judgment of
    acquittal on all counts, eliminating the need to consider
    any of his other arguments. See Burks v. United States, 
    437 U.S. 1
    , 17-18 (1977).
    Sain contends that his misrepresentations to the Army
    were not "material." According to Sain, regardless of what
    the documents he submitted reflected, the Army did not
    make payment of the 46 claims based on the actual
    expenses incurred in the carbon change outs. Instead, the
    Army agreed to pay AEC the fixed price of $27,401 for each
    change out over the two change outs allowed in the
    contract regardless of whether AEC used virgin or
    reactivated carbon or in what amount, as long as the plant
    properly treated the depot's waste water. Hence, Sain
    argues, because the Army received what it bargained for--
    namely, clean waste water--and did not rely on his false
    statements, his claims were not fraudulent.
    Initially, we note that this court has not explicitly ruled
    that misrepresentations must be material in order to be
    actionable under the federal fraud statutes, although our
    cases strongly suggest that we would not so hold. See
    United States v. Coyle, 
    63 F.3d 1239
    , 1244 (3d Cir. 1995)
    ("The negligence of the victim in failing to discover a
    fraudulent scheme is not a defense to criminal conduct.")
    (citation omitted). We need not decide this issue because,
    as explained below, the evidence that the Army reasonably
    relied on Sain's misrepresentations is substantial. Hence,
    we leave the issue for another day.
    A criminal defendant seeking reversal of his conviction
    based on a claim of insufficiency of the evidence bears a
    very heavy burden. 
    Cooper, 121 F.3d at 133
    ; 
    Coyle, 63 F.3d at 1243
    . This Court must "affirm the convictions if a
    rational trier of fact could have found the defendant guilty
    beyond a reasonable doubt, and the verdict is supported by
    substantial evidence." 
    Coyle, 63 F.3d at 1243
    (citations
    omitted). If there is substantial evidence to support the
    jury's verdict, we will not reverse even though we might
    have made a different decision based on the evidence.
    10
    
    Cooper, 121 F.3d at 133
    ; United States v. Hannigan, 
    27 F.3d 890
    , 892 (3d Cir. 1994).
    According to the indictment, the defendants engaged in
    the following fraudulent scheme: Sain represented to Army
    officials that the waste-water treatment plant would only
    produce sufficiently pure water if each carbon change out
    consisted of 5,000 pounds of virgin carbon per tank. Based
    on these representations, the Government agreed to
    reimburse AEC for the costs of this type of change out. The
    contract modifications provided that the Army would
    reimburse AEC for the amounts it actually spent. Sain's
    representations were false; he knew that the plant would
    operate effectively even if he used less expensive,
    reactivated carbon in amounts of fewer than 5,000 pounds.
    Most of the time, AEC used less than 5,000 pounds of less
    expensive, reactivated carbon in the change outs, with Sain
    keeping the difference between the amount he claimed he
    spent and the amount he actually spent. To execute the
    scheme, Sain made false statements in the claim forms and
    hid from the Government information that he was using
    reactivated carbon and less than 5,000 pounds per tank
    per change out.
    Our review of the record convinces us that there is more
    than substantial evidence supporting the Government's
    charge and establishing that Sain and AEC violatedS 1031.
    First, ample evidence establishes that Sain represented to
    the Army that 20,000 pounds of virgin carbon per change
    out must be used to treat the waste water effectively. Army
    technical representative Kinsinger and Lieutenant Colonel
    Andrews testified that Sain repeatedly told them that only
    virgin carbon would properly filter the water and that each
    tank must be filled with 5,000 pounds in order to operate
    effectively. Further, both Kinsinger and Andrews testified
    that the Army relied on Sain's representations. Contrary to
    Sain's argument, the Army required more than just the
    purification of its waste water. Each time Sain made a
    claim for expenses related to a change out, the Army
    required him to certify that he was using 20,000 pounds of
    virgin carbon per change out. Virtually all of the documents
    Sain provided to the Army purported to show that AEC
    either was using virgin carbon in 5,000-pound amounts or
    11
    using carbon with a price generally corresponding to the
    then-market price of virgin carbon. It would not have been
    necessary for Sain to submit such detailed documentation
    containing such representations if the Army did not care
    about the amount, type of carbon used and cost, and was
    only concerned with clean waste water.
    Second, the evidence establishes that the Army agreed to
    pay AEC the full amount of the claim only if AEC used
    20,000 pounds of virgin carbon per change out. According
    to Contract Modification 14, AEC was entitled to an
    adjustment of the original contract because of "costs
    associated with the excessive polluent (sic) level." Contract
    Modification 33 reaffirmed that language, providing that
    payment was predicated on AEC's using the quantity and
    quality of carbon described in Modification 14. Similarly,
    the claim forms and accompanying certifications and
    supporting documents submitted to the Army by AEC
    represented that AEC used carbon costing $1.25 per
    pound, the approximate market price of virgin carbon. If
    the contract modifications allowed AEC to recoup afixed
    amount regardless of his expenses, as Sain claims they did,
    there would have been little need to submit certifications
    and supporting documents. Further, Andrews testified that
    he advised Sain both orally and in writing that AEC would
    be reimbursed only if AEC provided sufficient evidence that
    it actually expended the money claimed.
    Third, Sain conceded a key aspect of the Government's
    case. He admitted that the plant operated effectively even
    though he used reactivated carbon and less than 20,000
    pounds per change out. Indeed, in his defense he
    contended that the jury should acquit him because he
    properly purified the Army's waste water and that his use
    of reactivated carbon in less than 20,000-pound lots was
    irrelevant to his arrangement with the Army. The
    effectiveness of reactivated carbon in amounts of less than
    20,000 pounds was critical to the scheme because it
    permitted Sain to pocket the price difference between the
    quality and quantity of the carbon he told the Army he was
    using and the quantity and quality he in fact used.
    Finally, there was substantial evidence that Sain
    submitted numerous false documents and hid from the
    12
    Government the truth that he was not using the quality
    and quantity of carbon that he had represented. For
    example, Sain provided to the Army Encotech invoice 326
    and an accompanying letter which falsely claimed that AEC
    had purchased carbon for the approximate market price of
    virgin carbon when in fact it did not purchase that carbon;
    caused his attorney, Keith Baker, to submit a false
    summary of carbon usage and expenditures; and made
    several other purchases of reactivated carbon from
    Encotech, all the while representing to the Army that he
    was using virgin carbon.
    At trial, the lynchpin of Sain's defense was that he and
    the Army negotiated a fixed price for each carbon change
    out. He claimed that he was entitled to use whatever type
    of carbon in whatever amount regardless of what the
    documents showed and the representations he made. The
    jury simply rejected Sain's characterization of his
    contracted obligations with the Army. There was
    substantial evidence to support the jury's verdict in light of
    the documents, the testimony of the Government's
    witnesses, and Sain's concessions in his testimony.
    B.
    Sain next argues that his convictions should be vacated
    because the Government failed to establish that he devised
    and executed a fraudulent scheme in connection with a
    contract valued at more than the $1 million minimum
    specified in the Act. See 18 U.S.C. S 1031(a) (outlawing
    fraud in connection with government contract "if the value
    of the contract ... is $1,000,000 or more"). He argues that
    the evidence established that each of the contract
    modifications was a separate contract and distinct from the
    main contract. Thus, he claims, any fraud he may have
    committed was in connection with each of the individual
    contract modifications and not the main contract.
    According to Sain, because the contract modifications were
    valued at less than $1 million each, his fraud in connection
    with them did not violate the Act. We disagree.
    The Act provides:
    13
    Whoever knowingly executes, or attempts to execute,
    any scheme or artifice with the intent--(1) to defraud
    the United States; or (2) to obtain money or property
    by means of false or fraudulent pretenses,
    representations, or promises, in any procurement or
    property or services as a prime contractor with the
    United States or as a subcontractor 8 if the value of
    the contract, subcontract, or any constituent part
    thereof, for such property or services is $1,000,000 or
    more shall ... be fined not more than $1,000,000 or
    imprisoned not more than 10 years, or both.
    18 U.S.C. S 1031(a).
    Sain relies on United States v. Nadi, 
    996 F.2d 548
    (2d
    Cir. 1993), which holds that "the value of the contract
    [under the Act] is determined by looking to the specific
    contract upon which the fraud is based." 
    Id. at 551.
    In
    Nadi, the government awarded two contracts for the
    production of individual salt and pepper packets for
    American troops in the Persian Gulf. The defendants were
    hired to perform the contracts as the only subcontractor.
    Under the contracts, the government was permitted to
    terminate performance unilaterally. If performance was
    unilaterally terminated, the defendants retained the right to
    claim reimbursement for out-of-pocket expenses associated
    with their performance of the contract. The defendants
    purchased extra equipment in anticipation of producing the
    salt and pepper packets. The government, however,
    exercised its right to terminate the contract and invited the
    defendants to submit a claim for their out-of-pocket
    expenses. The defendants submitted inflated and
    fraudulent claims. They were indicted and convicted of
    violating the Act.
    On appeal, they challenged their convictions on the
    ground that the Act was void for vagueness because it did
    not define the phrase "value of the contract." The
    government argued that, for purposes of the Act, the prime
    contract is always the contract to which the courts should
    look when determining whether the $1 million minimum is
    met even when the defendant is a party, and commits a
    fraud with respect only to a subcontract. The United States
    Court of Appeals for the Second Circuit disagreed. After
    14
    examining the legislative history, it rejected the general rule
    proferred by the government, reasoning that the contract
    on which the fraud is based is the relevant contract,
    whether it be a prime contract or a subcontract.
    Sain acknowledges that the United States Court of
    Appeals for the Fourth Circuit's holding in United States v.
    Brooks, 
    111 F.3d 365
    (4th Cir. 1997), is to the contrary. In
    Brooks, the court held that "regardless of its privity with the
    United States, any contractor or supplier involved in a
    prime contract with the United States who commits a fraud
    ... is guilty so long as the prime contract, a subcontract, a
    supply agreement, or any constituent part of such a
    contract is valued at $1 million or more." 
    Id. at 368-69.
    We need not decide whether to follow Brooks or Nadi,
    because we conclude that there was only one contract in
    this case. The contract modifications pointed to by Sain
    were simply that--modifications of the approximately $4.5
    million original contract which ultimately increased in value
    to approximately $7 million. As modifications, they were not
    separate contracts and did not stand on their own; they
    merely changed some of the terms of the original contract.
    The modifications incorporated and referred back to the
    terms of the original contract, explicitly stating that that
    contract remained in effect. Each modification states that it
    is a "modification of contract/order no. DAAC89-88-C-0008
    [the original contract]," but did not reduce the
    Government's financial liability under the contract. To the
    contrary, the modifications increased the total liability to
    almost $7 million. The modifications also state that "[a]ll
    other terms and conditions in the contract remain[sic] the
    same." Thus, the jury reasonably relied on this language in
    the modifications in concluding that even though Sain used
    the modifications to defraud the Army, the fraud
    intrinsically involved the approximately $7 million contract.
    C.
    Sain next argued that the indictment improperly charged
    him with a separate violation of the Act for each false claim
    he submitted. He claims he should have been charged only
    with a single count predicated on his devising the overall
    15
    fraudulent scheme. Because this claim requires
    interpretation of a statute, we exercise plenary review. See
    United States v. Cross, 
    128 F.3d 145
    , 147 (3d Cir. 1997).
    By its plain language, the statute criminalizes each
    knowing "execution" of the fraudulent scheme and not
    simply devising the fraudulent scheme itself. (Emphasis
    added). The statute's contemplation that defendants could
    be convicted of "multiple counts" supports this reading. See
    18 U.S.C. S 1031(c) (providing for a maximumfine of $10
    million for defendants convicted of "multiple counts"). Our
    reading of the statute is consistent with this and other
    circuits' interpretation of the bank fraud statute, 18 U.S.C.
    S 1344,5 which contains language virtually identical to the
    Major Fraud Act. "The circuits that have addressed
    multiplicity in the context of bank fraud have consistently
    held that the ... statute `punishes each execution of a
    fraudulent scheme rather than each act in furtherance of
    such a scheme.' " United States v. Harris, 
    79 F.3d 223
    , 232
    (2d Cir. 1996) (collecting cases from the Third, Fifth,
    Seventh, Ninth, and Tenth circuits), cert. denied, 
    117 S. Ct. 223
    (1996); See United States v. Schwartz, 
    899 F.2d 243
    ,
    248 (3d Cir. 1990); United States v. Rimell, 
    21 F.3d 281
    ,
    287 (8th Cir. 1994).
    Our determination that a defendant may be punished for
    each knowing execution of the fraudulent scheme does not
    end the inquiry, however. Not every act in furtherance of a
    fraudulent scheme is a separate "execution" of the scheme.
    In determining whether an action is a separate execution of
    a fraudulent scheme, courts look to whether the actions are
    substantively and chronologically independent from the
    overall scheme. See 
    Harris, 79 F.3d at 232
    . In the instant
    case, each of the 46 false claims constituted a separate
    _________________________________________________________________
    5. The bank fraud statute provides:
    "Whoever knowingly executes, or attempts to execute, a scheme or
    artifice--(1) to defraud a financial institution; or (2) to obtain
    any of
    the moneys, funds, credits, assets, securities, or other property
    owned by, or under the custody or control of, afinancial
    institution,
    by means of false or fraudulent pretenses, representations, or
    promises; shall be fined not more than $1,000,000 or imprisoned
    not more than 30 years or both."
    16
    execution of the scheme. Each was substantively
    independent from the overall scheme because each sought
    to obtain a separate amount of money from the government
    and caused the government a distinct loss. There is no
    evidence that the defendants had determined a specific
    amount of money that they wanted to obtain and took
    several steps to get that single amount. Rather, the
    evidence established that the defendants intended to obtain
    as much money as possible. Further, the false claims were
    chronologically distinct from each other in that each was
    submitted weeks or months apart over an approximately
    three-and-one-half-year period. In sum, we hold that a
    defendant may be separately punished under the Major
    Fraud Act for each execution of the fraudulent scheme and
    that each of Sain's false claims constituted a
    chronologically and substantially separate execution of the
    fraudulent scheme.
    D.
    Sain next argues that he cannot be convicted of violating
    the Act because the Act only permits conviction of an entity
    or individual that actually contracted with the United
    States, and AEC, not Sain, was the contracting party. The
    indictment alleged that Sain aided and abetted AEC in the
    commission of the violations of the Act. See 18 U.S.C. S 2.6
    Sain contends that he cannot be convicted under the theory
    that he aided and abetted AEC in violating the Act because
    he owned and completely controlled AEC. According to
    Sain, there is no other entity for him to aid or abet because
    his ownership and control of AEC merge him and
    corporation into a single entity. Sain relies on United States
    v. Stevens, 
    909 F.2d 431
    (11th Cir. 1990), which holds that
    an individual agent of a corporation cannot be convicted of
    conspiracy when the only other possible party to the
    _________________________________________________________________
    6. Section 2 provides: "(a) Whoever commits an offense against the
    United States or aids, abets, counsels, commands, induces or procures
    its commission, is punishable as a principal[;] (b) Whoever willfully
    causes an act to be done which if directly performed by him or another
    would be an offense against the United States, is punishable as a
    principal."
    17
    conspiracy is the agent's corporation. This is a legal
    argument, and we exercise plenary review. See United
    States v. Jefferson, 
    88 F.3d 240
    , 241 (3d Cir.), cert. denied,
    117 U.S 536 (1996).
    Sain's argument is pure sophistry; its fundamental
    inconsistency is its fatal flaw. It is inconsistent because, on
    the one hand, Sain contends that AEC, because it is a
    corporation, is a separate entity that entered into the
    contract with the Army, thereby insulating him personally
    from any criminal liability for the fraud. On the other hand,
    relying on Stevens, Sain asserts that given his stock
    ownership and control of AEC, he and the corporation are
    actually the same entity and, therefore, he cannot, in
    essence, aid and abet himself.
    Although a corporation has certain limitations imposed
    by the particular statute permitting its creation, it is a
    separate legal entity, with an existence "independent of
    individuals who compose it." William M. Fletcher, Fletcher
    Cyclopedia of the Law of Private Corporations S 5, at 441
    (Permanent ed. 1990); see also Wooddale, Inc. v. Fidelity
    and Deposit Co. of Maryland, 
    378 F.2d 627
    , 631 (8th Cir.
    1967). A corporation is not in reality a person, but the law
    regards it as "distinct and separate from the individual
    stockholders. It has a real existence with rights and
    liabilities as a separate legal entity." Fletcher S 7, at 445.
    This is true even if a single individual owns and controls all
    of the corporation's stock. See 
    id. S 14,
    at 463.
    One of the principal reasons why individuals choose the
    corporate form is that it is a separate entity and offers
    protection from personal liability for its debts. See
    Walkovszky v. Carlton, 
    223 N.E.2d 6
    , 7 (N.Y. 1966) ("The
    law permits the incorporation of a business for the very
    purpose of enabling its proprietors to escape personal
    liability"). Like individuals, corporations may sue and be
    sued, enter into contracts, see N.J. Stat. Ann. S 14A:3-1(1)
    (listing duties and privileges of corporation); 15 Pa. Con.
    Stat. Ann. S 1502(a)(2) (same), and be separately convicted
    of and sentenced for criminal offenses. See United States v.
    Hughes Aircraft Co., Inc., 
    20 F.3d 974
    , 978 (9th Cir. 1993).
    AEC, because it is a corporation, is a separate legal entity,
    even though Sain owned all the stock. Thus, it has the
    18
    capacity of being aided and abetted. To hold otherwise
    would allow the controlling stockholder of a corporation to
    enjoy the benefits of the corporate form, protection from
    personal liability for corporation's debts, without accepting
    the burden of assuming criminal responsibility when the
    individual causes the corporation to commit a crime.
    Indeed, Sain, by his conduct, recognized and exploited
    AEC's existence as a separate entity; he caused AEC to sign
    the contract with the Army in order to protect himself from
    personal liability. If a corporation is permitted to perform
    the wide range of functions listed above, we see no reason
    why it cannot be used by its officers and agents to commit
    a crime as contemplated by 18 U.S.C. S 2(b).
    Even assuming that Sain is correct that it was impossible
    for him to conspire with AEC, that conclusion does not
    preclude imposition of aiding and abetting responsibility.
    Arguably, Sain could not conspire with AEC because AEC
    could not form the mental state required to conspire with
    another. This is because a corporation is a conspirator only
    pursuant to respondeat superior liability. If an agent of the
    corporation conspires with another individual, the
    corporation for which the individual is the agent may be
    criminally liable. However, there must be at least two
    natural individuals for a conspiracy involving a corporation
    to exist because two entities must have the required mental
    state to form a conspiracy. The aiding and abetting statute
    allows for broader liability and does not require proof that
    an unwitting entity being used to commit the crime
    possessed any mental state. See 18 U.S.C.S 2(b) ("Whoever
    willfully causes an act to be done which if directly
    performed by him or another would be an offense against
    the United States, is punishable as a principal."); see also
    United States v. Curran, 
    20 F.3d 560
    , 567 (3d Cir. 1994) ("A
    defendant charged under section 2(b) with willfully causing
    another person to file a false report, can be convicted even
    if that intermediary was unaware that the document was
    inaccurate.") (citations omitted). Only the person causing
    the unwitting entity to act must possess the knowing
    mental state. 
    See 20 F.3d at 567
    . Therefore, an individual
    who causes a corporation to commit a crime is criminally
    liable for the corporation's criminal conduct as an aider and
    abettor even if the corporation does not act with a knowing
    19
    mental state. United States v. Dotterweich, 
    320 U.S. 277
    ,
    284 (1943). For that reason, conviction of Sain was proper
    even assuming arguendo that Sain caused AEC to
    unwittingly commit the crime. Thus, the district court
    committed no error in sustaining Sain's conviction as an
    aider and abettor.
    E.
    Sain next argues that the district court erred when it
    refused to admit the testimony of defense expert Henry
    Foster, a metallurgist, on the ground that Foster's
    testimony was irrelevant and confusing. According to Sain's
    proffer, Foster would have testified that it was against
    Sain's interest to perform unnecessary carbon change outs
    because the change outs damaged the adsorbers. Foster
    also would have testified that he observed signs that carbon
    had collected on the sides of the adsorbers and had been
    scraped from that position. This second aspect of Foster's
    testimony would have rebutted the Government's
    suggestion that Sain allowed the carbon build up along the
    inside of the tanks making his calculation of the amount of
    his use of carbon based on volume inaccurate. This court
    reviews the district court's conclusion to exclude evidence
    for abuse of discretion. United States v. Eufrasio, 
    935 F.2d 553
    , 571-72 (3d Cir. 1991).
    The district court excluded the part of Foster's testimony
    dealing with Sain's disincentive to perform unnecessary
    change outs, concluding that it was not relevant and was
    misleading. The court reasoned that the Government had
    not claimed that Sain performed unnecessary change outs
    or that the type and amount of carbon that Sain used were
    ineffective. Hence, the testimony was misleading and
    irrelevant, according to the district court, because Sain was
    improperly attempting to suggest to the jury that he was
    permitted to make false claims to recoup the damages
    made to the tanks.
    This conclusion was not an abuse of discretion. The
    Government's theory was not that Sain used ineffective
    quantities or qualities of carbon. To the contrary, the
    Government agreed that Sain had performed the number of
    20
    change outs claimed, had not performed any unnecessary
    change outs, and agreed that the type and amount of
    carbon used was entirely effective in treating the waste
    water. Hence, Foster's testimony did not relate directly or
    indirectly to any issue in the case or corroborate or dispute
    any evidence or contention of the parties. The court also
    correctly ruled that the evidence had the potential to
    mislead the jury into believing that Sain was permitted to
    recoup the alleged damage to AEC's tanks by submitting
    false claims. In complicated cases such as this, where
    jurors are required to sift through hundreds or even
    thousands of documents, hear the testimony of dozens of
    witness, and consider such esoteric issues as the relative
    effectiveness of virgin and reactivated carbon or the level of
    contaminants in waste water, the district court must be
    permitted to keep the jury's attention focused on the issues
    by excluding irrelevant and even misleading evidence.
    As to the portion of Foster's testimony relating to his
    observation that carbon had built up on the side of the
    adsorbers and been scraped away, contrary to Sain's claim,
    the district court specifically stated several times that
    Foster would be permitted to testify as to this matter. Sain
    declined to call Foster for this purpose. Hence, the district
    court committed no error.
    F.
    Sain next argues that the district court erred when it
    determined that he inflicted losses of $597,124 on the
    United States as a result of his fraudulent scheme. He
    argues this error affected both his base offense level under
    the United States Sentencing Guidelines and the amount of
    restitution imposed. The findings of fact underlying the
    district court's determination of the loss for guidelines
    purposes are subject to review for clear error. United States
    v. Maurello, 
    76 F.3d 1304
    , 1308 (3d Cir. 1996). The
    appropriateness of a particular restitution award is
    reviewed for abuse of discretion. 
    Id. Specifically, Sain
    claims the district court committed two
    errors. First, he argues that the court underestimated the
    amount of carbon used in the change outs because the
    21
    court did not consider 25,000 pounds referred to in an AEC
    employee's affidavit submitted by Sain prior to sentencing
    and also rejected Sain's contention that the 1,000-pound
    bags of carbon, in fact, contained 1,400 pounds. Second,
    Sain contends that the court should have subtracted from
    the loss the amounts he paid for virgin carbon when he
    used virgin carbon.
    The district court did not err in rejecting the affidavit
    submitted by Sain, especially because the assertion in the
    affidavit regarding the 25,000 pounds was uncorroborated
    and had not been subjected to cross-examination. Instead,
    the court based its findings on much more reliable
    evidence: a government agent's testimony and the other
    evidence produced at trial. Further, the district court
    properly rejected the claim that the 1,000-pound bags
    actually contained 1,400 pounds of carbon. There was
    ample evidence introduced at trial that the bags only
    contained between 1,000 and 1,075 pounds of carbon and
    that any additional weight was water which could not
    properly be included in the calculation. For the foregoing
    reasons, the district court's findings were not clearly
    erroneous and its imposition of the restitution award was
    not an abuse of discretion.
    The district court also committed no error in refusing to
    give Sain credit for his occasional use of virgin carbon in
    the change outs. Indeed, the heart of the scheme charged
    and proved was that reactivated carbon worked as
    effectively as virgin carbon. Thus, there was never any need
    to use virgin carbon and Sain's representations that virgin
    carbon had to be used allowed him to charge the
    Government unnecessary sums.
    G.
    Finally, Sain challenges the district court's increase of his
    base offense level under the sentencing guidelines based on
    a finding that he possessed a special skill and used that
    skill to significantly facilitate his commission of the offense.
    See U.S.S.G. S 3B1.3. On the basis of this finding, the
    district court increased Sain's offense level by two points.
    This court reviews for clear error the district court's finding
    22
    that Sain possessed a special skill and used it to
    significantly facilitate the offense. See 
    Maurello, 76 F.3d at 1308
    . Relying on United States v. Hickman, 
    991 F.2d 1110
    ,
    1112-13 (3d Cir. 1993), Sain argues that his special skill
    did nothing more than enable him to convince the Army to
    trust him; once he gained this trust, the fraud he
    perpetrated was "garden variety."
    To impose this enhancement, the district court mustfind
    that: (1) the defendant possessed a special skill and (2)
    used it to significantly facilitate the commission of the
    offense. See 
    Maurello, 76 F.3d at 1314
    . Here, the district
    court found that Sain possessed special skills relating to
    his education as a professional engineer, his experience
    with waste-water treatment, and his "intimate knowledge"
    of the design and workings of the AEC waste-water
    treatment plant. The court concluded that those skills gave
    credence to Sain's insistence to the Army that only virgin
    carbon and only 20,000 pounds of it per change out would
    properly treat the waste water. The court also concluded
    that Sain's skills enabled him to determine that less
    expensive carbon and less of it would still clean the waste
    water as effectively as the amounts and types described in
    the claims he submitted to the Army.
    There was ample credible evidence produced at trial to
    support these findings. Without those skills and
    credentials, Sain could not have gained the Army's
    confidence and convinced it to use the amounts and type of
    carbon upon which he insisted. Sain's skills and guile not
    only influenced the Army to rely on him but also deterred
    it from independently determining that less expensive and
    fewer pounds of carbon would have been equally effective.
    Indeed, the fraud was anything but garden variety. It is
    hard to imagine how anyone without a special skill would
    be capable of committing such a complex fraud as the one
    in this case.
    IV.
    Accordingly, the judgment and sentence of the district
    court will be affirmed.
    23
    A True Copy:
    Teste:
    Clerk of the United States Court of Appeals
    for the Third Circuit
    24