*629 OPINION
Michael John Modena was convicted of conspiracy to defraud the United States because of his participation in a tax-evasion scheme. He now appeals his conviction and sentence, arguing that (1) the district court failed to properly determine whether he knowingly and voluntarily waived his right to counsel, (2) the government improperly introduced evidence regarding his coconspirators’ convictions, (3) the government presented inadmissible summaries of the evidence, (4) the government engaged in prosecutorial misconduct, and (5) the district court imposed unjustified special conditions on his term of supervised release. For the reasons set forth below, we AFFIRM Modena’s conviction, VACATE his sentence, and REMAND the case for resentencing.
I. BACKGROUND
This case arises from the efforts of five brothers to avoid paying federal income taxes. These men, Denver Lee Russell, Orval Dean Russell, Timothy Patrick Russell, Daniel Thomas Russell, and Jack Allen Russell (referred to collectively as the Russell Brothers), purchased sham trusts that they used to hide their income. Mode-na helped set up and administer several of these trusts.
In April of 1999, a federal grand jury returned a 26-count indictment against the Russell Brothers and Modena. Count 1 charged all of the defendants with conspiracy to defraud the United States, in violation of 18 U.S.C. § 371. The remaining counts charged only the Russell Brothers with failure to file income tax returns and income tax evasion, in violation of 26 U.S.C. §§ 7203 and 7201, respectively. In September of 1999, the Russell Brothers were convicted on all counts. Modena, however, evaded arrest until June of 2000. His case was set for trial in the United States District Court for the Western District of Michigan shortly after his arrest.
' At the initial pretrial conference, Mode-na informed the magistrate judge that he wished to proceed pro se. The magistrate judge then asked Modena a series of questions to ensure that he understood the consequences of his decision to represent himself. Modena indicated that he understood the difficulties involved in self-representation, but wished to do so anyway. Based upon Modena’s answers and demeanor, the magistrate judge concluded that Modena “knowingly and voluntarily waived his right to counsel.” The magistrate judge nevertheless appointed the Federal Public Defender to serve as standby counsel in the event that Modena changed his mind.
Five days later, Modena sent a letter to the district court requesting that counsel be appointed on his behalf. But he withdrew this request in a subsequent letter that he sent to the district court three days thereafter., At the final pretrial conference before the district court, Modena again stated his desire to represent himself. The district court therefore permitted him to do so without further inquiry.
Modena was tried before a jury in August of 2000. To establish Modena’s guilt on the conspiracy count, the government called 30 witnesses and offered more than 200 exhibits. Modena sat silent throughout the entire trial, raising no objections and presenting no defense on his own behalf. After a three-day trial, the jury found Modena guilty on the conspiracy count.
Modena then sent a letter to the district court requesting that he receive the assistance “of a more qualified attorney in tax related matters” during the sentencing proceedings. While waiting for a response from the district court, Modena was asked to participate in an interview with a pre- *630 sentence investigator. Modena declined, explaining that he would not participate in the interview without the assistance of counsel. In response, the investigator claimed that Modena had already declined to have appointed counsel present, and therefore no longer had the right to counsel. Modena still refused to participate in the interview. The presentence investigation report (PSR) was thus prepared without his input. Modena later received a letter from the district court informing him that the Federal Public Defender had already been appointed to provide any assistance that he might need.
At the sentencing hearing, the district court sentenced Modena to 60 months in prison, followed by 3 years of supervised release. The district court later issued its sentencing order, which added special conditions to Modena’s term of supervised release. Specifically, the order provided that Modena must receive testing and treatment for alcohol and drug abuse and abstain from the use of alcoholic beverages. Modena now appeals his conviction and sentence.
II. ANALYSIS
A. Waiver of counsel
Modena contends that the district court erred in concluding that he knowingly and voluntarily waived his right to counsel, a right guaranteed by the Sixth Amendment to the United States Constitution. He presents this argument for the first time on appeal, however, and must therefore establish that the district court committed plain error in making that determination.
United States v. Koeberlein,
We must first decide whether the district court properly determined that Mode-na had waived his right to counsel. This court has held that, before allowing a criminal defendant to represent himself, a district court must conduct a colloquy substantially similar to the one set forth in the
Bench Book for United States District Judges. United States v. McDowell,
We disagree. A magistrate judge is authorized by statute to determine whether a criminal defendant has effectively waived the right to counsel. 28 U.S.C. § 636(b)(1)(a) (“[A] judge may designate a magistrate judge to hear and *631 determine any pretrial matter pending before the court....”)- The magistrate judge in the present case exercised that authority and followed the procedures required by this court in doing so. Although Modena had an interim change of heart regarding his decision to proceed pro se, he ultimately gave the district court no reason to suspect that he was uncertain about representing himself. Specifically, he sent the district court a letter explicitly withdrawing his earlier request to be represented by appointed counsel and, at the final pretrial conference, reiterated his desire to proceed pro se.
Modena gives no compelling reason why we should break new ground by requiring that a district court reevaluate a magistrate judge’s acceptance of the defendant’s waiver of counsel solely because the defendant at one point had second thoughts about representing himself. To require such a reconsideration would defeat one of the key purposes of the Magistrates Act; namely, the conservation of judicial resources.
See Howard v. Sec’y of Health & Human Servs.,
B. Coconspirators’ convictions
Modena next maintains that the admission of testimony regarding the convictions of his coconspirators, the Russell Brothers, deprived him of a fair trial. During direct examination, the prosecutor questioned Daniel Russell as to whether he and his brothers had been convicted of conspiracy. The questioning went as follows:
Q. You were on trial in this courtroom last year in August, were you not?
A. Yes, I was.
Q. And you were convicted of the five individual counts against you as well as the conspiracy count, were you not?
A. Yeah.
Q. And your brothers were likewise convicted of the same counts?
A. Yes, sir.
Modena did not object to the government’s line of questioning, so we are limited to the determination of whether the admission of the testimony at issue constituted plain error.
Koeberlein,
Evidence that a coconspirator has been convicted of conspiring with a criminal defendant is generally inadmissible, because it might lead the jury to “regard the issue of the remaining defendant’s guilt as settled and [conclude that] the trial is a mere formality.”
United States v. Griffin,
*632
Daniel Russell testified at trial as a witness for the government. The prosecutor, therefore, was entitled to question Russell about his prior conspiracy conviction in order to “remove the sting” of any attempt to impeach his credibility with his conviction on cross-examination. Fed. R.Evid. 609 advisory committee’s note. But the district court was required to issue a cautionary instruction after Russell acknowledged his conspiracy conviction.
Sanders,
Modena must do more, however, than simply show that the district court erred in admitting testimony regarding the Russell Brothers’ conspiracy convictions. Under the plain-error standard of review, he must also establish that the admission of this testimony affected his substantial rights.
United States v. Schulte,
At trial, Daniel Russell testified that his brothers purchased trusts from Modena in order to hide their income. He also explained that Modena marketed these trusts as a means to avoid federal income taxes. In addition, three other individuals testified that they served as trustees for trusts set up by Modena on behalf of the Russell Brothers, but that they never performed any substantive functions as trustees. They instead allowed Modena to use their names and signed whatever documents he presented to them. Furthermore, an agent with the Internal Revenue Service testified that, based upon his knowledge and experience, the trusts established by Modena lacked any economic substance and were designed solely to hide income. Modena offered no rebuttal to any of this testimony.
As shown above, the government offered ample evidence to establish Mode-na’s guilt beyond a reasonable doubt. The strength of the government’s case against Modena makes it highly unlikely that the admission of the testimony concerning the Russell Brothers’ conspiracy convictions had any effect on the jury’s verdict. Furthermore, Daniel Russell acknowledged the convictions without any elaboration, and the government did not emphasize this aspect of Russell’s testimony. For all of these reasons, we conclude that the admission of this testimony did not constitute plain error.
C. Summaries
Modena also challenges the admission of several evidentiary summaries that were introduced by the government. He argues that the government did not comply with the requirements for admitting these summaries as set forth in Rule 1006 of the Federal Rules of Evidence. Because Modena did not object to the admission of the summaries, we consider his challenge under the plain-error standard of review.
Koeberlein,
Rule 1006 governs the admissibility of evidentiary summaries. It provides in pertinent part as follows:
*633 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.
Fed.R.Evid. 1006. This court has interpreted Rule 1006 as imposing five requirements for the admission of an evidentiary summary: (1) the underlying documents must be so voluminous that they cannot be conveniently examined in court, (2) the proponent of the summary must have made the documents available for examination or copying at a reasonable time and place, (3) the underlying documents must be admissible in evidence, (4) the summary must be accurate and nonprejudicial, and (5) the summary must be properly introduced through the testimony of a witness who supervised its preparation.
United States v. Bray,
Modena maintains that the government failed to satisfy the first three requirements set forth above in introducing numerous summaries of the Russell Brothers’ financial transactions. He maintains that the “most significant violation of Rule 1006” was the government’s alleged failure to make the documents underlying these summaries, labeled as Exhibits 63-76, 78-123, 156-60, 167, and 169, available for examination or copying. In response to this allegation, the government contends that it filed a Statement of Discovery that informed Modena that, upon request, it would make any records intended for use at trial available for inspection. It points out that Modena never made such a request.
But Rule 1006 “operates independently of the discovery rules.... ”
Air Safety, Inc. v. Roman Catholic Archbishop of Boston,
The district court therefore erred in admitting the challenged summaries into evidence. But we conclude that the district court did not commit plain error in doing so. First, as set out above in Part H.B., the government offered compelling, unrebutted evidence of Modena’s guilt without regard to the summaries in question. Second, because Modena does not contend that the summaries inaccurately reported the Russell Brothers’ financial dealings, we would be hard-pressed to determine that the admission of the summaries “seriously affected the fairness, integrity, or public reputation of the judicial proceedings.”
See Bray,
*634 D. Prosecutorial misconduct
Modena next contends that the prosecutor engaged in misconduct during the closing arguments. He specifically argues that the prosecutor vouched for several of the government’s witnesses, pressured the jury to return a guilty verdict, and exhorted the jury to “send a message” with its verdict. Modena, however, never objected to any of these arguments. He must therefore show that their utterance constituted plain error.
Koeberlein,
In reviewing a claim of prosecutorial misconduct under the plain-error standard of review, we must first determine whether the statements at issue were improper.
United States v. Carter,
Modena first maintains that the prosecutor improperly vouched for several of the government’s witnesses when the prosecutor told the jury that these witnesses “got their lives together” after rejecting their former resistance to the federal tax laws. He particularly finds fault with the following comments made by the prosecutor regarding Daniel Russell:
I’ve got to say it’s real satisfying to see that this community lost an angry law breaker and may soon get back a productive, law-abiding man who will rejoin his family as a hardworking taxpayer and a positive role model for both the community and for his family.
This court has held that a “prosecutor cannot improperly vouch for the credibility of his witnesses.”
United States v. Emuegbunam,
Modena also claims that the prosecutor improperly pressured the jury to return a guilty verdict by stating that “I think we can all take some measure of satisfaction in the investigation and prosecution of the Russells, of John Modena. But we’re not finished. We’re not finished until this verdict is returned.” Statements that exhort the jury to “do its job” are improper.
United States v. Young,
According to Modena, the prosecutor engaged in further misconduct when he implored the jury to “tell, through your verdict, tell Michael John Modena that what he did with the Russell [B]rothers was criminal and that the tax laws of this
*635
country apply to Michael John Modena.” This court has held that arguments that invite the jury to “send a message” to the defendant through its verdict, although disfavored, do not “cross the line into pros-ecutorial misconduct.”
United States v. Reliford,
Based on the above analysis, we conclude that the prosecutor improperly vouched for Daniel Russell’s credibility and pressured the jury to return a guilty verdict. The question, then, is whether the prosecutor’s statements were so flagrant as to warrant reversing Modena’s conviction.
Carroll,
The first factor focuses on the effect of the improper arguments at issue; namely, whether they were misleading or otherwise prejudicial to the defendant. In the present case, the prosecutor’s arguments did not mislead the jury as to the evidence against Modena. They did, however, prejudice Modena both by implicitly vouching for the testimony of Daniel Russell and by improperly pressuring the jury to find Modena guilty. This factor therefore favors Modena.
In evaluating the second factor, we consider whether the improper arguments made by the prosecutor were isolated. The prosecutor in the present case made two improper statements, both of which were made during closing argument. But because the prosecutor did not make an extensive series of improper statements, this factor favors the government.
The third factor requires us to consider whether the prosecutor deliberately or accidentally made the improper arguments in question. Both of the improper remarks at issue appear to be deliberate attempts to bolster the government’s case against Modena. The government, moreover, does not contend that the arguments were unintentional. Accordingly, this factor favors Modena.
The last factor centers on whether the government had a strong case against the defendant, such that the improper arguments likely had no impact on the outcome of the trial. As discussed above in Part H.B., the government offered a substantial amount of evidence to establish Modena’s guilt, evidence that Modena failed to rebut. This factor thus favors the government.
In sum, the relevant factors do not disproportionately favor either the government or Modena. But Modena bears the burden of showing that the prosecutorial misconduct in the present case was so “exceptionally flagrant that it constitutes plain error.”
Carter,
E. Conditions of supervised release
Modena’s final challenge relates to his sentence. He contends that the district court erroneously imposed special conditions on his supervised release. In particular, Modena claims that the district court lacked any basis for requiring Mm to receive testing and treatment for drug and alcohol abuse and to abstain from the use of alcoholic beverages during his three-year term of supervised release. We will set aside a supervised-release condition only if we determine that the district court abused its discretion in imposing the condition.
United States v. Ritter,
Federal law requires that a district court impose specified conditions on a term of supervised release under certain circumstances, none of which is at issue in the present case. 18 U.S.C. § 3583(d). A district court may also impose “special” conditions of supervised release that it deems appropriate. Id. To impose a special condition, however, the district court must determine, among other things, that the condition
is reasonably related to specified sentencing factors, namely the nature and circumstances of the offense and the history and characteristics of the defendant, and the need to afford adequate deterrence, to protect the public from further crimes of the defendant, and to provide the defendant with needed educational or vocational training, medical care, or other correctional treatment in the most effective manner....
Ritter,
Modena claims that the district court abused its discretion by imposing the following special conditions on his supervised release:
(8) The defendant shall participate in a program of testing and treatment for drug abuse, as directed by the probation officer, until such time as the defendant is released from the program by the probation officer.
(9) The defendant shall participate in a program of testing and treatment for alcohol abuse, as directed by the probation officer, until such time as the defendant is released from the program by the probation officer.
(11) The defendant shall abstain from all use of alcoholic beverages.
Neither alcohol nor drug use played a role in Modena’s crime. Nor does the record indicate that Modena has any substance abuse problem. Indeed, the PSR specifically states that the probation officer “has no information pertaining to substance abuse/ use pertaining to Mr. Modena.” The special conditions at issue, therefore, do not bear a reasonable relationship to either rehabilitating Modena or protecting the public.
United States v. Prendergast,
But the government contends that Modena is to blame for the absence of information as to whether he has a substance abuse problem. It points out that Modena refused to participate in an interview with the presentence investigator, during which time he would have had the opportunity to provide an account of his past drug and alcohol use, or his lack thereof. Modena counters that he did not participate in the interview as a result of the confusion regarding his legal representation. We need not decide which party is responsible for the record being silent as to whether Modena has a substance abuse problem. A defendant’s failure to provide information to a presentence investigator does not give the district court license to impose any special condition it chooses.
See United States v. Bass,
This court has also held that a district court must, “at the time of sentencing, ... state in open court the reasons for its imposition of the particular sentence, including its rationale for mandating special conditions of supervised release.”
United States v. Kingsley,
Based on all of the above, we conclude that the district court abused its discretion in requiring Modena to undergo testing and treatment for drug and alcohol abuse and to abstain from the use of alcoholic beverages during his three-year term of supervised release. We therefore vacate Modena’s sentence and remand the case with instructions to resentence Modena without the special conditions at issue.
Bass,
III. CONCLUSION
For all of the reasons set forth above, we AFFIRM Modena’s conviction, VACATE his sentence, and REMAND this case for resentencing without the special conditions on Modena’s supervised release that require him to undergo testing and treatment for drug and alcohol abuse and to abstain from the use of alcoholic beverages.
