Robert Cooper Smith appeals his conviction and sentence for corruption-related offenses committed during his tenure as a city councilman for the city of Fresno, California. In this opinion, we resolve a sentencing issue, an evidentiary matter, and whether 18 U.S.C. § 201(c)(2) prohibits the government from granting immunity to cooperating witnesses. We have jurisdiction pursuant we AFFIRM.
I.
Smith served on the Fresno city council between May 1991 and June 1994. During that time, he misappropriated campaign money for personal use, solicited and accepted bribes in exchange for his vote on matters before the city council, covered up these activities, and filed false tax forms. An FBI investigation into his conduct eventually led to his indictment on fourteen federal counts.
During trial, the government called on a number of witnesses to testify against Smith. These witnesses included Jon Tho-mason, a local real-estate developer who had allegedly paid a $5,000 bribe to Smith and made illegal contributions to other local politicians. Smith sought to introduce extrinsic evidence to contradict certain parts of Thomason’s testimony, but the district court excluded this evidence pursuant to Rule 608(b) of the Federal Rules of Evidence. Prior to trial, the government had agreed to immunize Thoma-son from federal prosecution and to notify relevant authorities of his cooperation if he would assist the government in its investigation and prosecution of Smith. While on the witness stand, Thomason admitted that his desire to avoid prosecution for his role in bribing local politicians motivated him to cooperate with the government.
On April 17, 1998, a jury convicted Smith on ten of the fourteen counts in his indictment, 3 including one count of money laundering in violation of 18 U.S.C. § 1956(a)(1) and two counts of extortion under color of official right in violation of 18 U.S.C. § 1951. On June 30, 1998, the district court sentenced Smith to 78 *1036 months custody but temporarily stayed its decision in order to consider whether the sentence should be enhanced for abuse of position of trust. On July 8, 1998, the district court decided that enhancement was proper, increased Smith’s sentence to 96 months, and entered final judgment.
Smith now appeals, raising three arguments before this panel: (1) He contends that enhancement of his sentence on account of abuse of position of trust constituted impermissible double counting in violation of the Sentencing Guidelines. (2) He alleges that the district court erred when it precluded him from introducing extrinsic evidence to refute certain parts of Thomason’s testimony. (3) He claims that 18 U.S.C. § 201(c)(2), which criminalizes the bribery of witnesses, prohibits the government from conferring immunity upon cooperating witnesses, and therefore Tho-mason’s testimony should be excluded. For the reasons below, we reject all three of Smith’s arguments.
II.
This panel reviews de novo challenges to the interpretation and application of the Sentencing Guidelines.
See United States v. Bailey,
In sentencing Smith, the district court grouped all ten counts together into a single group and determined that the money laundering count carried the highest offense level for the group at 23. It next added a two-point enhancement for obstruction of justice. It then added another two points for abuse of position of trust, ruling that this second enhancement was permissible because abuse of position of trust was not an element of the money laundering offense.
Smith challenges this second enhancement, relying in effect on a three-part argument: (1) The district court grouped the money laundering count together with the counts for extortion under color of official right. (2) Extortion under color of official right inherently involves an abuse of position of trust. (3) Accordingly, the sentence for the group may not be enhanced for abuse of position of trust because the extortion counts already accounted for the abuse. Smith does not challenge the district court’s factual finding that he abused a position of trust. He also does not challenge the grouping of the extortion counts together with the money laundering count.
We reject Smith’s argument because he mischaracterizes the methodology used to compute his sentence. In the instant case, the district court relied on Section 3D1.2(d) of the Sentencing Guidelines to group the ten counts together on the basis that they all involved substantially the same harm. Under Section 3D1.3(b), when the court determines the sentence for crimes grouped together pursuant to Section 3D1.2(d), it first evaluates the offense level for each count within the group and then sets the base sentence for the group by reference to the count with the highest offense level. In other words, under Sections 3D1.2(d) & 3D1.3(b), only the highest level count counts; all other counts are ignored for the purposes of determining the base sentence.
See United States v. Savage,
The grouping of the two counts for extortion under color of official right together with the count for money laundering did not result in impermissible double counting because the district court based the base sentence solely on the money laundering count. “Impermissible double counting occurs only when ‘one part of the Guidelines is applied to increase a defendant’s punishment on account of a kind of harm that has already been fully accounted for by application of another part of the Guidelines.’ ”
United States v. Alexander,
Smith’s reliance on
Calozza
is misguided because
Calozza
is distinguishable from this case. In
Calozza,
The same double counting that occurred in Calozza, however, did not occur here because the district court applied the enhancement only once. And when it did apply the enhancement, it applied it to a base sentence which had not yet accounted for Smith’s abuse of position of trust.
III.
We review evidentiary rulings for abuse of discretion.
See United States v. Figueroa-Lopez,
During trial, Thomason testified about the various ways in which he had illegally funneled money to Smith. The government then asked Thomason whether Smith was the only politician whom he had “given money to in this type of fashion.” Trial Transcript at 529. Thomason replied that Smith was not. With the exception of this statement, Thomason made no other references on direct examination to illegal contributions that he had allegedly made to politicians besides Smith.
On cross-examination, Smith questioned Thomason about statements he had made to the FBI about his illegal dealings with other politicians. These statements were made prior to trial during the course of the FBI’s investigation into political corruption in Fresno. In an effort to discredit Tho-mason, Smith sought to call as witnesses three people who had allegedly received illegal contributions from Thomason. According to Smith, these witnesses would challenge the veracity of the statements Thomason had made to the FBI concerning corruption on the part of other politicians. The district court precluded Smith from calling these three witnesses. , Smith challenges this preclusion, arguing that he should have been allowed to call the witnesses under Rule 404(b) of the Federal Rules of Evidence to show a plan on the part of Thomason to fabricate lies about different politicians in order to avoid prosecution. Evidence of such a plan, argues Smith, was probative of Thomason’s bias in favor of the government.
*1038 This evidence clearly was excludable under Rule 403 because its probative value, if any, was substantially outweighed by the danger of confusing the issues, of misleading the jury, and of needlessly presenting cumulative evidence. See Fed. R. Evid. 403. As the district court noted, to the extent that Thomason was biased in favor of the government, such bias had been established by Thomason’s own admissions (1) of wanting to curry favor with the government in order to avoid prosecution and (2) of lying to cover up his own involvement in bribing local politicians. Our review of the record supports this conclusion. Extrinsic evidence seeking to prove some plan on the part of Thomason to lie to protect his hide would not have added significantly to the inference of bias that one could have drawn from Thomason’s own testimony about his motives. Accordingly, we find no abuse of discretion in the district court’s evidentiary ruling that precluded Smith from calling the three witnesses.
IV.
As his final claim, Smith contends that the government’s grant of immunity to Thomason and its agreement to notify relevant authorities of Thomason’s cooperation constituted the giving of something of value for testimony in violation of 18 U.S.C. § 201(c)(2).
4
Such testimony, argues Smith, was therefore illegally obtained and should have been excluded. Because Smith did not object to Thoma-son’s testimony during trial, we review the use of Thomason’s testimony for plain error.
See United States v. Nazemian,
Smith raises an argument that has been rejected by every circuit that has considered it.
See, e.g., United States v. Hunte,
Given the indistinguishable difference between leniency and immunity,
Mat-tarolo
is on point, and therefore Smith’s claim must fail. Even if
Mattarolo
were distinguishable, however, we find no plain error because we agree with our sister circuits that 18 U.S.C. § 201(c)(2) does not prohibit the government from conferring immunity upon cooperating witnesses in exchange for testimony.
See Mattarolo,
The opinions of our sister circuits discuss in great detail the many reasons for which Smith’s argument should be rejected. We find these reasons to be persuasive, but in the interest of brevity, we decline to discuss them here except by summary reference.
See, e.g., Hunte,
First, we emphasize the importance of reading 18 U.S.C. § 201(c)(2) in light of the extensive substantive and procedural framework that Congress has created for bargaining between the government and potential witnesses,
see generally Singleton,
Second, our holding is consistent with past decisions in which we have affirmed convictions notwithstanding the fact that the government conferred benefits upon its witnesses.
See, e.g., United States v. Cuellar,
Third, we note that even if Smith were correct, he offers no basis for transforming 18 U.S.C. § 201(c)(2) into an exclusionary rule. The use of the exclusionary rule is an exceptional remedy typically reserved for violations of constitutional rights.
See United States v. Harrington,
AFFIRMED.
Notes
. Specifically, the jury found Smith guilty of one count of racketeering in violation of 18 U.S.C. § 1962(c); three counts of honest services mail fraud in violation of 18 U.S.C. §§ 1341 & 1346; three counts of filing false tax returns in violation of 26 U.S.C. § 7206(1); one count of money laundering in violation of 18 U.S.C. § 1956(a)(1); and two counts of extortion under color of official right in violation of 18 U.S.C. § 1951.
. The statute states in relevant part:
Whoever ... gives, offers, or promises anything of value to any person, for or because of the testimony under oath or affirmation given or to be given by such person as a witness upon a trial, hearing, or other proceeding, before any court ... authorized by the laws of the United States to hear evidence or take testimony ... shall be fined under this title or imprisoned for not more than two years, or both.
18 U.S.C. § 201(c)(2).
. For example, 18 U.S.C. § 201(c)(2) might apply to a wayward prosecutor who bribes a witness to lie on the stand.
