United States v. Mark Isaacs ( 2010 )


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  •                               In the
    United States Court of Appeals
    For the Seventh Circuit
    No. 08-2876
    U NITED STATES OF A MERICA,
    Plaintiff-Appellee,
    v.
    M ARK O. ISAACS,
    Defendant-Appellant.
    Appeal from the United States District Court
    for the Northern District of Illinois, Eastern Division.
    No. 06 CR 186—Joan Humphrey Lefkow, Judge.
    A RGUED M AY 12, 2009—D ECIDED JANUARY 25, 2010
    Before K ANNE and SYKES, Circuit Judges, and V AN
    B OKKELEN, District Judge.Œ
    Œ
    The Honorable Joseph S. Van Bokkelen, United States District
    Court Judge for the Northern District of Indiana, sitting by
    designation.
    The panel wishes to thank Jason Huber and Travis Kennedy
    of the Edwin F. Mandel Legal Aid Clinic, The University of
    (continued...)
    2                                             No. 08-2876
    V AN B OKKELEN, District Judge. Following a jury trial,
    Mark O. Isaacs was convicted of fraudulently using
    unauthorized access devices in violation of 
    18 U.S.C. § 1029
    (a)(2). He was ordered to serve a prison term of
    forty months and pay $573,400 in restitution. Isaacs
    appeals, contending that the district court abused its
    discretion by denying his motion for a thirty-day continu-
    ance after the government turned over a new version
    of voluminous computer records in the form of compact
    disks (“CDs”) three days before trial. He further asserts
    that the district court abused its discretion by admitting
    the government’s summary exhibits at trial after the
    government failed to turn over the underlying data at a
    reasonable time and place as required by Federal Rule
    of Evidence 1006. Finally, Isaacs avers that the district
    court abused its discretion by limiting his cross-examina-
    tion of a key government witness regarding the P2K
    database or system. Because the district court did not
    abuse its discretion with respect to these issues, we
    affirm the judgment of the district court.
    I.
    PrimeCo Personal Communications, Inc., a former
    telecommunications provider, was in the business of
    selling cellular phones, cellular phone service, and
    prepaid phone or payment cards. Through either a
    Œ
    (...continued)
    Chicago Law School, for representing Mark O. Isaacs on the
    appeal in this case.
    No. 08-2876                                             3
    PrimeCo store or an authorized PrimeCo dealer, PrimeCo
    customers could purchase prepaid phone cards and load
    the value of the cards (minutes or credits) onto their
    PrimeCo phone accounts. To activate the minutes on a
    prepaid phone card, PrimeCo customers would call a toll-
    free number and enter certain information, including
    the PrimeCo phone number associated with the account,
    the account number to which the credit was to be
    applied, and a personal identification number (“PIN”) that
    was listed on the back of the prepaid phone card. Each
    prepaid phone card had its own unique PIN and each
    PIN was associated with one value that was to be
    credited to only one PrimeCo phone account.
    In March and April 2001, a glitch was discovered in
    PrimeCo’s computer system, which permitted the
    loading of prepaid phone card values onto multiple
    PrimeCo phone accounts using a single PIN. As a result,
    PrimeCo initiated an internal investigation and found
    that, after a call was placed to the toll-free number and
    a PIN was entered, it took between forty-five
    seconds and one minute and fifteen seconds for the com-
    puter’s database to query the system and determine if
    that particular PIN was available. During that time
    period, simultaneous calls could be made to the toll-free
    number to credit the same PIN to multiple PrimeCo
    phone accounts. The investigation uncovered that certain
    PrimeCo prepaid phone cards were being used to credit
    multiple PrimeCo phone accounts, and this problem
    was isolated to PrimeCo’s Chicago market.
    Ginny Toepfer, PrimeCo’s Director of Information
    Technology, compiled three sets of data to analyze the
    4                                               No. 08-2876
    problem. First, Toepfer received data files from West
    Interactive, the company that maintained the computer
    program for the PIN card activations. That data
    included the phone numbers used to call and activate
    the PINs, the PINs that had been activated, the account
    numbers that were credited, the dollar amounts of the
    prepaid phone cards, and the dates of the phone calls.
    Second, PrimeCo’s marketing department provided
    Toepfer with a listing of customers, who were active and
    in good standing, in PrimeCo’s billing system. Finally,
    Toepfer was given a listing of PrimeCo’s indirect dealers.
    Toepfer compiled the information she received into one
    database.1 After analyzing the data, she generated sum-
    mary exhibits that were admitted into evidence as the
    Government’s Exhibits 2d and 2e. The summary
    exhibits were grouped by PIN, and after each PIN the
    summary exhibits listed the following information: (1) the
    date and times the PIN was activated; (2) the phone
    numbers that were used to call the toll-free number to
    activate that PIN; (3) the dollar amount of the prepaid
    phone card that was activated; (4) the PrimeCo account
    number that was credited; (5) the name of the PrimeCo
    1
    The data from the time period January 2001 through
    March 2001 was admitted into evidence on a CD marked as
    the Government’s Exhibit 2. Some of the data relating to
    PrimeCo’s customers, who were active and in good standing,
    was admitted into evidence on a CD marked as the Govern-
    ment’s Exhibit 2A. The data from the time period August 2000
    to December 2000 was admitted into evidence on a CD
    marked as the Government’s Exhibit 2B.
    No. 08-2876                                                 5
    authorized dealer associated with the phone number, if
    any; (6) the name of the PrimeCo customer associated
    with the phone number, if any; and (7) the total number
    of times the PIN was activated and the total dollar
    amount for each PIN.
    Isaacs was the owner of four wireless telephone stores
    that operated under the name of Beep Smart. PrimeCo
    records established that Isaacs had a PrimeCo account
    number. An analysis of the summary exhibits showed
    that, during a seven-day sample period in January 2001,
    in eleven instances, his PrimeCo account number was
    among those accounts credited multiple times. Another
    analysis of the summary exhibits showed that, during a
    different seven-day sample period in January 2001, three
    phone numbers associated with one of Isaacs’s Beep
    Smart stores were used fifty-nine times to load credits
    using PrimeCo prepaid phone cards.
    On March 16, 2006, a federal grand jury returned a one-
    count Indictment against Isaacs, charging him with vio-
    lating 
    18 U.S.C. § 1029
    (a)(2). Section 1029(a)(2) makes it
    illegal for an individual to “knowingly and with intent
    to defraud traffic[ ] in or use[ ] one or more unauthorized
    access devices during any one-year period, and by
    such conduct obtain[ ] anything of value aggregating
    $1,000 or more during that period.” Isaacs was also
    charged with aiding and abetting in the illegal scheme
    under 
    18 U.S.C. § 2.2
    2
    Wayne Mitchell operated cellular phone stores and was
    indicted as a co-defendant in the PrimeCo phone card scheme.
    (continued...)
    6                                              No. 08-2876
    Isaacs entered a plea of not guilty to the charges and
    proceeded to trial. After a number of continuances of the
    trial date, a jury trial was set to begin on April 21,
    2008. Isaacs chose to represent himself at trial with the
    assistance of stand-by counsel.
    On the day the trial was set to begin, Isaacs filed an
    emergency motion to continue the trial for thirty days.
    On that same day, before proceeding to trial, the
    district court heard arguments on Isaacs’s motion.
    At the hearing, Isaacs argued that, just three days
    before trial, his stand-by counsel had received a new set
    of CDs containing voluminous computer records from
    the government. He asserted that he needed more time
    to compare the data on the new set of CDs, which com-
    prised the underlying data used to compile the sum-
    mary exhibits, to that which had been previously
    produced by the government on an earlier set of CDs.
    Isaacs further explained that the new set of CDs con-
    tained 25,000 pages of data and because it would take
    about six or seven hours to print the data, a continuance
    was warranted.
    The government’s counsel, however, represented that
    the new set of CDs contained the same underlying data
    that had been previously disclosed to Isaacs in 2006 on
    the earlier set of CDs. The government produced a new
    2
    (...continued)
    He entered a plea of guilty to access device fraud and was
    sentenced to twenty-six months in prison and ordered to pay
    $632,825 in restitution.
    No. 08-2876                                              7
    set of CDs before trial because the earlier set of CDs
    contained extraneous and inadmissible information, and
    one set of data lists was difficult to read. On the new set
    of CDs, the government redacted information related to
    a defendant in another case and PrimeCo and West
    Interactive data that was not related to the summary
    exhibits in this case. The government also converted one
    set of data lists from Microsoft Excel to Microsoft Access
    to make it more readable. The government’s counsel
    explained that the redaction of the data and reformatting
    change did not effect the summary exhibits: they
    remained the same. Furthermore, the government’s
    counsel had an understanding with Isaacs’s prior
    counsel that the new set of CDs would be produced closer
    to trial and would only include the underlying data used
    to prepare the summary exhibits. The government’s
    counsel stated there was a delay in producing the new
    set of CDs because the PrimeCo employee responsible
    for the summary exhibits no longer worked at the com-
    pany.
    Because Isaacs had concerns regarding the newly pro-
    duced set of CDs, the government’s counsel proposed to
    the district court that the underlying data previously
    produced to Isaacs on the earlier set of CDs be used as
    the basis for validating or admitting the summary
    exhibits at trial. The government’s counsel, however,
    stated that the earlier set of CDs could not be viewed by
    the jury because that set of CDs contained irrelevant
    and inadmissible information, and one set of data lists
    was not in a viewable format. The district court agreed
    with the government’s proposal and noted that Isaacs
    8                                              No. 08-2876
    could select which format he wanted to use; he had the
    option of using either the newly produced set of CDs or
    the earlier set of CDs for the purpose of validating the
    summary exhibits at trial. Therefore, the district court
    found no basis for delaying the trial and denied Isaacs’s
    motion to continue.
    The case proceeded to trial on April 21, 2008. Numerous
    witnesses testified as to Isaacs’s involvement in the
    scheme to defraud PrimeCo. These witnesses were either
    Isaacs’s former employees or former employees of his co-
    defendant, Wayne Mitchell. Many of these employees
    were in high school and worked part-time at the defen-
    dants’ stores, when the defrauding scheme took place.
    Isaacs’s former employees testified that Isaacs instructed
    them to tell a customer, who was interested in pur-
    chasing a PrimeCo prepaid phone card, that they were
    out of the cards, but if the customer left a phone number
    and account number on a piece of paper, the credit
    would be loaded onto the account later in the day. After
    taking a customer’s phone number and account number,
    an employee would take the payment from the customer
    and then provide the customer with a receipt. Once an
    entire sheet of paper was filled up with enough
    customers seeking to purchase cards, that information
    would be provided to Isaacs or Mitchell; either Isaacs or
    Mitchell typically handled the sheets of paper containing
    the account numbers and phone numbers.
    These witnesses also described Isaacs’s direct participa-
    tion in the loading of credits onto PrimeCo customer
    accounts; he participated either in person or by phone by
    use of a speaker phone. Typically, the process for
    No. 08-2876                                            9
    loading credits would involve Isaacs or Mitchell pro-
    viding employees with the account numbers and phone
    numbers that were to be credited. To load credits, em-
    ployees would call PrimeCo’s toll-free number, enter
    the phone numbers, and once a recording was heard
    that asked for the PIN, someone would read the PIN
    aloud and the employees would input the PIN simulta-
    neously, taking advantage of the computer’s lag time. On
    some occasions, Isaacs read the PINs during the loading
    process. He often brought stacks of prepaid phone cards
    to the stores to be loaded onto customers’ accounts.
    Furthermore, there was testimony that Isaacs’s employees
    received additional pay or benefits for loading credits
    onto accounts.
    Witnesses testified that Isaacs became involved in the
    loading of credits onto PrimeCo customer accounts in
    August 2000, and that activity continued until May 2001.
    After Isaacs became involved in the loading of credits,
    the employees began participating in the process more
    often. One witness testified that the loading of credits
    took place every night and involved one to three phone
    cards per night. However, after Isaacs became involved,
    the number of cards increased to six or seven per
    night and, within several months, the number of cards
    increased to twenty-five per night. Furthermore, subse-
    quent to Isaacs’s involvement, the number of employees
    who participated in the loading process increased. Ac-
    cordingly, on the basis of the witnesses’ testimony,
    the evidence showed that Isaacs improperly used a
    single PIN to credit multiple PrimeCo phone accounts
    and pocketed the money he collected from customers
    that was to be used for the purchase of the prepaid phone
    10                                              No. 08-2876
    cards; this illegal scheme resulted in losses in excess
    of $500,000 to PrimeCo.
    Toepfer, a key government witness, also testified at trial.
    On direct examination, Toepfer testified regarding
    the database she developed, which comprised the under-
    lying data in this case, and the creation of the summary
    exhibits. Isaacs sought to cross-examine Toepfer re-
    garding the validity of the summary exhibits. Specifically,
    during cross-examination, Isaacs referred Toepfer to a
    page in one of the summary exhibits; however, Toepfer,
    who was using a summary exhibit that had been
    admitted into evidence, noted that the page Isaacs was
    using was different from the page she was using. There
    was a discrepancy in the two versions of the summary
    exhibits which entailed the transposition of two
    identical lines or time entries. After a brief consultation
    with stand-by counsel, Isaacs was able to continue his
    cross-examination by referring Toepfer to the version of
    the summary exhibits he was using and complete the
    point he wished to make regarding blank lines in the
    PrimeCo name column listed on the summary exhibits.
    On direct examination, Toepfer further testified re-
    garding PrimeCo’s database of active customers known
    as the P2K database or system, which she received from
    PrimeCo’s marketing department during the internal
    investigation. Toepfer stated that all the data she
    received during the internal investigation, was imported
    into one database she created; this data was maintained
    so that it could not be altered or changed. Specifically,
    Toepfer testified that once the data was imported into
    her database, which included the data from P2K system,
    No. 08-2876                                                11
    it was stored in a read-only format so that it could not
    be changed or altered by anyone.
    On cross-examination, Isaacs believing that Toepfer
    testified that the P2K system could not be altered or
    changed, sought to question her about the integrity or
    security of the system. Specifically, Isaacs asked Toepfer:
    “And if an employee was to go into a section [of the P2K
    system] that they are not authorized, would that be
    grounds for them to be terminated?” (R. 253:14-16.) The
    government object to Isaacs’s question on relevancy
    grounds. In responding to the government’s objection,
    Isaacs stated that he thought his line of questioning
    was relevant because “during the direct [Toepfer] stated
    that certain—that some employees were not allowed to
    go into the P2K system. And that gives the jury the im-
    pression that this information is totally secured.” (R. 254:1-
    4.) Isaacs stated he wanted to explore the issue of the
    security of the P2K system because he planned to cross-
    examine another government witness, Tina James. James,
    one of Isaacs’s former employees, had improperly
    accessed the P2K system to deactivate a friend’s phone.
    Isaacs, who believed that James was terminated from
    PrimeCo for the phone deactivation, explained that he
    did not want the jury to have the impression that the
    P2K system was secure.
    In sustaining the government’s relevancy objection,
    the district court stated that Isaacs could only question
    Toepfer about the integrity of the database she created,
    used, and described as secure because that was all the
    government’s counsel had questioned her about on
    12                                            No. 08-2876
    direct examination. Isaacs, however, continued his cross-
    examination and was able to elicit from Toepfer that
    certain employees were able to access the P2K system
    and, if an employee went into a section of the system
    they were prohibited from accessing, that employee
    could be terminated.
    James later testified on direct examination, that in her
    sales position at PrimeCo, she had some access to the
    P2K system and she once improperly accessed the
    system to deactivate a phone account. James stated that
    she was disciplined for deactivating the account and was
    later terminated for her involvement in the scheme
    to defraud PrimeCo and not for improperly accessing
    the P2K system. James also testified that certain em-
    ployees had limited access to the P2K system.
    After Isaacs rested his case and the CDs containing the
    underlying data and summary exhibits had been
    admitted into evidence, he asked the district court to
    allow the earlier set of CDs to be viewed by the jury. To
    support his request, Isaacs raised the issue of the dis-
    crepancy in the versions of the summary exhibits that
    he and Toepfer used during cross-examination. The
    government explained the discrepancy by noting that
    early in the discovery process hard copies of the
    summary exhibits were produced to Isaacs; those
    hard copies were an earlier version of what was later
    electronically produced to Isaacs one to two years before
    trial. The government explained that Toepfer did not
    prepare the earlier version of the summary exhibits and
    the discrepancy in the versions of the summary
    exhibits entailed the transposition of two identical lines
    No. 08-2876                                              13
    or time entries. Thus, a different program had been used
    to generate the earlier version of the summary exhibits
    which reversed the order of the entries; however, the data
    remained the same. The district court denied Isaacs’s
    request to allow the jury to view the earlier set of CDs
    because there were no substantive changes or differences
    between the summary exhibits used by Isaacs and the
    summary exhibits admitted into evidence.
    On April 24, 2008, the jury returned a guilty verdict
    against Isaacs. He was found guilty of knowingly, and with
    intent to defraud, using unauthorized access devices,
    namely PrimeCo phone cards, in violation of 
    18 U.S.C. § 1029
    (a)(2).
    Isaacs filed a motion for a new trial on May 23, 2008. In
    that motion, Isaacs argued that the district court erred
    when it failed to grant his motion to continue the trial for
    thirty days after the government tendered voluminous
    computer records containing West Interactive and PrimeCo
    data on the day of trial. Isaacs further moved for a
    new trial on the basis that the district court improperly
    limited his cross-examination of Toepfer regarding the
    level of security of the P2K database or system.
    On July 17, 2008, the district court denied Isaacs’s
    motion. In denying the motion, the district court found
    that Isaacs had possession of the underlying data and
    summary exhibits long before the trial began in this
    case. The district court further held that Isaacs had been
    allowed to question Toepfer about the integrity or
    security of the database she created, including whether
    the P2K system was accessible by other employees at the
    customer service level.
    14                                                 No. 08-2876
    The district court entered judgment against Isaacs on
    July 18, 2008. He was sentenced to forty months in
    prison and ordered to pay $573,400 in restitution. Isaacs
    now appeals.
    II.
    A.
    Isaacs’s first argument on appeal is that the district
    court abused its discretion in denying his motion to
    continue the trial for thirty days. We will reverse a
    district court’s “denial of a continuance only for an
    abuse of discretion and a showing of actual prejudice.”
    United States v. Farr, 
    297 F.3d 651
    , 655 (7th Cir. 2002) (citing
    United States v. Schwensow, 
    151 F.3d 650
    , 656 (7th Cir.
    1998)). In deciding whether a district court abused its
    discretion in denying a continuance, “we bear in mind
    that ‘a trial date once set must be adhered to
    unless there are compelling reasons for granting a con-
    tinuance.’ ” 
    Id.
     (quoting United States v. Reynolds, 
    189 F.3d 521
    , 527 (7th Cir. 1999)). However, at the same time, a court
    cannot have a “ ‘myopic insistence upon expeditiousness
    in the face of a justifiable request for delay.’ ” United States
    v. Robbins, 
    197 F.3d 829
    , 846 (7th Cir. 1999) (quoting
    Ungar v. Sarafite, 
    376 U.S. 575
    , 589 (1964)).
    In evaluating a request for a continuance, a district
    court weighs seven non-exhaustive factors:
    1) the amount of time available for preparation;
    2) the likelihood of prejudice from denial; 3) the defen-
    dant’s role in shortening the effective preparation
    No. 08-2876                                               15
    time; 4) the degree of complexity of the case; 5) the
    availability of discovery from the prosecution; 6) the
    likelihood a continuance would satisfy the movant’s
    needs; and 7) the inconvenience and burden to the
    court and its pending case load.
    Farr, 
    297 F.3d at 655
     (citations omitted). The weight of
    these factors will vary in any given situation and the
    district court is in “ ‘the best position to evaluate and
    assess the circumstances presented by [a party’s] request
    for a continuance. ’ ” 
    Id.
     (quoting Schwensow, 
    151 F.3d at 656
    ). Accordingly, a district court abuses its discretion
    “only when we can say that the trial judge chose an
    option that was not within the range of permissible
    options from which we would expect the trial judge to
    choose under the given circumstances.” United States v.
    Depoister, 
    116 F.3d 292
    , 294 (7th Cir. 1997) (citing Thornton
    v. Barnes, 
    890 F.2d 1380
    , 1385 (7th Cir. 1989)).
    Having reviewed the record, we cannot find that the
    district court abused its discretion in denying Isaacs’s
    motion to continue the trial. First, Isaacs had enough
    time to prepare for trial because the new set of CDs
    contained essentially the same underlying data as that
    which was previously produced by the government
    and disclosed to Isaacs in 2006, during the discovery
    phase of this case. Second, there were no material dif-
    ferences in the underlying data contained on the earlier
    and new sets of CDs as the government simply
    redacted extraneous and inadmissible information, and
    converted one set of data lists from Microsoft Excel to
    Microsoft Access to make it more readable. The redaction
    16                                                   No. 08-2876
    of the data and reformatting change did not effect the
    summary exhibits: they remained the same. Notably,
    Isaacs has failed to make a showing that there were, in
    fact, any material differences between the two sets of
    CDs. Therefore, the government’s disclosure of the new
    set of CDs three days before trial did not nullify Isaacs’s
    trial preparation because he had at least fifteen months
    to review the underlying data and summary exhibits
    and, by his own admission, he reviewed all of this informa-
    tion long before trial.3
    Isaacs next asserts that the district court’s denial of his
    motion to continue severely prejudiced his ability to
    prepare for trial because the summary exhibits constituted
    the only evidence in the case that the $1,000 statutory
    requirement had been met; there was no single witness
    who could testify that he had acquired $1,000 or more
    of value through the PrimeCo phone card scheme. Isaacs,
    however, fails to persuade us on this point. Isaacs has
    no independent basis for challenging the summary
    exhibits because, as stated, the summary exhibits did not
    change and were based on the same underlying data
    contained in both sets of CDs.
    3
    The record does not state when in 2006 Isaacs received the
    earlier set of CDs. Because Isaacs’s trial began on April 21, 2008,
    at a minimum, he had at least fifteen months to prepare. This
    assumes that Isaacs received the underlying data and sum-
    mary exhibits on December 31, 2006. However, if Isaacs
    received this same information on January 1, 2006, he would
    have had about twenty-seven months to prepare for trial.
    No. 08-2876                                              17
    Isaacs also contends that, he was unable to adequately
    prepare to cross-examine Toepfer regarding the validity
    of the summary exhibits as a result of the government’s
    late disclosure of the new set of CDs. To support
    his contention, Isaacs points out that there was a discrep-
    ancy in the versions of the summary exhibits he and
    Toepfer used during cross-examination, which entailed
    the transposition of two identical lines or time entries.
    Isaacs used a version of the summary exhibits that
    had been produced by the government early in the dis-
    covery process; Toepfer used the summary exhibits
    that she had prepared and had been admitted into evi-
    dence.
    In reviewing the discrepancy, the district court
    found there were no substantive changes or differences
    in the two versions of the summary exhibits. Because
    Isaacs does not contend that the discrepancy in the ver-
    sions of the summary exhibits was anything more than
    the transposition of two identical lines or time entries, he
    cannot be viewed as being prejudiced in his ability to
    prepare for trial. The discrepancy was minor and Isaacs
    had an opportunity to cross-examine Toepfer, using the
    summary exhibits that were familiar to him, which he
    had received early in the discovery process. Furthermore,
    the discrepancy related to minor differences in the sum-
    mary exhibits and did not involve the underlying data
    in this case.
    Isaacs’s additional contentions likewise fail to
    persuade us that the district court abused its discretion
    in denying his motion to continue the trial. Isaacs’s
    claim that he diligently prepared for trial actually belies
    18                                               No. 08-2876
    his contention that he needed a continuance because
    there were no material differences in the underlying
    data contained in the two sets of CDs produced by
    the government and there was no change in the sum-
    mary exhibits. And Isaacs admitted he had reviewed
    the underlying data and summary exhibits long before
    trial. Furthermore, while Isaacs claims that the
    complexity of this case weighed in favor of the district
    court granting a continuance, he fails to persuade us on
    this point because he had a minimum of fifteen months
    to prepare for trial, which is a sufficient amount of time
    when considering the evidence in this case. Therefore,
    a continuance was not warranted on these bases.
    Finally, Isaacs maintains that there was no indication
    that a thirty-day continuance would have substantially
    inconvenienced the district court, government, or any
    witness. Isaacs points out that the district court never
    discussed or make any specific statements regarding any
    inconvenience to the court or any party in this case.
    However, as we have stated, “[T]his factor is simply one
    of many factors that the court may weigh and consider.”
    United States v. Jones, 
    455 F.3d 800
    , 806 (7th Cir. 2006). The
    district court did not err in failing to discuss
    any inconvenience.
    We find that the district court acted within its
    discretion in denying Isaacs’s motion to continue the
    trial for thirty days. Isaacs has failed to show that there
    were any material differences in the underlying data
    contained in the new set of CDs he received shortly
    before trial, so as to cause him any prejudice. United
    No. 08-2876                                                      19
    States v. Vincent, 
    416 F.3d 593
    , 599 (7th Cir. 2005) (“Despite
    ample time since trial, however, [the defendant] has
    neither pointed to exculpatory evidence he would have
    found in the discovery nor proposed additional questions
    he would have asked the government’s witnesses.”);
    Robbins, 
    197 F.3d at 846
     (affirming denial of motion to
    continue where the defendants “did not identify any
    specific material prejudice they suffered” from the de-
    nial). Because the district court did not abuse its discre-
    tion in denying Isaacs’s motion for a continuance, we
    affirm on this issue.
    B.
    Isaacs contends that the district court abused its discre-
    tion by admitting the summary exhibits into evidence
    after the government failed to timely produce the new
    set of CDs as required by Federal Rule of Evidence 1006.
    We review a district court’s evidentiary rulings for an
    abuse of discretion. United States v. Rangel, 
    350 F.3d 648
    ,
    650 (7th Cir. 2003) (citing United States v. Brown, 
    289 F.3d 989
    , 994 (7th Cir. 2002)).4
    4
    Plain error is the standard that is used “[w]hen a party fails to
    properly object to the admission of evidence at trial.” Rangel,
    
    350 F.3d at
    650 (citing United States v. Curtis, 
    280 F.3d 798
    , 801
    (7th Cir. 2002)). Here, Isaacs did not technically object to the
    admission of the underlying data and summary exhibits
    offered by the government at trial. However, in essence, he
    previously challenged the admission of this evidence in pre-
    trial motions, including his April 21, 2008, emergency motion
    (continued...)
    20                                              No. 08-2876
    Rule 1006 controls the admission of summary exhibits:
    The contents of voluminous writings, recordings, or
    photographs which cannot conveniently be examined
    in court may be presented in the form of a chart,
    summary, or calculation. The originals, or duplicates,
    shall be made available for examination or copying,
    or both, by other parties at [a] reasonable time and
    place. The court may order that they be produced
    in court.
    Fed. R. Evid. 1006. Rule 1006 “requires a party seeking to
    introduce a summary of voluminous records to provide
    copies of those records to the opposing party at a rea-
    sonable time and place.” Rangel, 
    350 F.3d at 651
    . A rea-
    sonable time and place “has been understood to be
    such that the opposing party has adequate time to
    examine the records to check the accuracy of the sum-
    mary.” 
    Id.
     (citing Canada Dry Corp. v. Nehi Beverage Co., 
    723 F.2d 512
    , 523 (7th Cir. 1983)).
    Isaacs contends that the government’s decision to
    turn over the new set of CDs containing the underlying
    data three days before trial violated Rule 1006 because
    these records were not made available to him at a reason-
    able time and place. He maintains that the admission of
    the summary exhibits was prejudicial as it connected
    4
    (...continued)
    to continue the trial. Because the government does not argue
    that plain error is the applicable standard, we give Isaacs,
    who represented himself at trial, the benefit of the doubt by
    using an abuse of discretion standard.
    No. 08-2876                                              21
    him to the scheme to defraud PrimeCo and quantified the
    losses in the case. Therefore, Isaacs claims he would not
    have been convicted if the summary exhibits had not
    been admitted into evidence.
    We find Isaacs’s contention that the government
    violated Rule 1006 without merit. As discussed above, the
    government produced the earlier set of CDs containing
    the underlying data used to create the summary exhibits
    to Isaacs in 2006. Thus, Isaacs had at least fifteen months
    to review the data and compare it to the summary
    exhibits to determine if there were any inaccuracies; he
    does not claim in this appeal that the underlying data
    or summary exhibits were inaccurate or erroneous.
    Because the government complied with Rule 1006, the
    district court properly admitted the summary exhibits
    into evidence. We, therefore, affirm the district court on
    this issue.
    C.
    Isaacs contends that the district court abused its discre-
    tion by limiting his ability to cross-examine Toepfer
    regarding PrimeCo’s P2K database or system. As a
    general matter, “[l]imitations on cross-examination are
    reviewed for abuse of discretion when there are no im-
    plications of the defendant’s Confrontation Clause
    rights” under the Sixth Amendment. United States v.
    Stoecker, 
    215 F.3d 788
    , 790 (7th Cir. 2000). Here, Isaacs
    does not assert that his rights under the Sixth Amend-
    ment’s Confrontation Clause are implicated.
    22                                              No. 08-2876
    Isaacs contends that he was entitled to fully cross-
    examine Toepfer regarding the P2K system, which was
    used, in part, to generate the summary exhibits intro-
    duced by the government at trial. On cross-examination,
    Isaacs sought to challenge Toepfer’s testimony that the
    P2K system was secure and the data could not be al-
    tered. Isaacs asked Toepfer whether employees were
    punished for accessing the P2K system: “And if an em-
    ployee was to go into a section [of the P2K system]
    that they are not authorized, would that be grounds for
    them to be terminated?” (R. 253:14-16.) The government,
    however, objected to the question on the basis of rele-
    vancy. In responding to the government’s objection,
    Isaacs stated that he thought his line of questioning was
    relevant because “during the direct [Toepfer] stated
    that certain—that some employees were not allowed to go
    into the P2K system. And that gives the jury the impression
    that this information is totally secured.” (R. 254:1-4.) The
    district court, in sustaining the government’s relevancy
    objection, stated that Isaacs could only question Toepfer
    about the integrity of the database she created, used,
    and described as secure because that was all the govern-
    ment’s counsel had questioned her about on direct exami-
    nation. Therefore, Isaacs contends that he was unable
    to challenge Toepfer regarding the security and validity
    of the information in the P2K system because the
    district court limited his ability to cross-examine her.
    We find that the district court did not abuse its discre-
    tion in limiting Isaacs’s cross-examination of Toepfer.
    First, Isaacs was mistaken in his belief that Toepfer
    testified that the P2K system was secure; she did not.
    No. 08-2876                                               23
    Rather, Toepfer stated that the database she created
    was maintained so that the data itself could not be
    altered or changed. She testified that once she imported
    the data she received from the internal investigation
    into her database, which included the data from the
    P2K system, it was stored in a read-only format so that
    it could not be changed or altered by anyone. Next,
    Isaacs was able to elicit testimony from Toepfer that
    certain employees were able to access the P2K system
    and, if an employee went into a section of the system
    he or she was prohibited from accessing, that employee
    could be terminated. James also testified that certain
    employees had limited access to the P2K system and she
    was disciplined for improperly accessing the P2K system
    to deactivate a friend’s phone. Therefore, Isaacs was not
    limited in his cross-examination as to any material point.
    Because the district court did not abuse its discretion
    in limiting Isaacs’s cross-examination of Toepfer, we
    affirm on this issue.
    D.
    Finally, Isaacs argues that he has presented three
    clear errors made by the district court which constitute
    cumulative errors. “Cumulative errors, while individually
    harmless, when taken together can prejudice a
    defendant as much as a single reversible error and
    violate a defendant’s right to due process of law.” United
    States v. Allen, 
    269 F.3d 842
    , 847 (7th Cir. 2001) (citations
    omitted). However, because we hold that the district
    court did not err as to any of the issues before us, we
    find Isaacs’s contention without merit.
    24                                          No. 08-2876
    III.
    Because we find that the district court did not abuse
    its discretion with respect to any of the issues raised
    by Isaacs, we affirm the judgment of the district court.
    A FFIRMED
    1-25-10