Opinion for the court filed by Circuit Judge KAREN LeCRAFT HENDERSON.
Charles Ramsey was convicted of one count of possessing cocaine with intent to distribute in violation of 21 U.S.C. § 841(a)(1), (b)(l)(B)(ii). Through counsel, Ramsey raises several issues, including whether the trial court erred: (1) in allowing the Government to introduce evidence of Ramsey’s character; (2) in failing to find entrapment as a matter of law and (3) in sentencing Ramsey to 210 months’ imprisonment. Ramsey pro se appeals the Government's use of Francisco Fierro as an informant witness. Finding no error, we affirm Ramsey’s conviction and sentence.
I. Background
On December 14, 1995, Ramsey was charged in a two-count indictment with one count of possessing cocaine with intent to distribute, see 21 U.S.C. § 841(a)(1), (b)(l)(B)(ii), and one count of attempted possession with intent to distribute, see 21 U.S.C. § 846. The charges arose out of a Drug Enforcement Administration (DEA) undercover operation that began earlier in 1995 when Francisco Fierro agreed to assist DEA as an informant, following his arrest for attempted murder and various weapons offenses after a fight in a Miami restaurant. Although Fierro could provide no leads in Florida, DEA decided to use Fierro as an informant in the Washington, D.C. area because his main client had been a Washington-area drug dealer named Charles Ramsey. Fierro informed DEA Agent Ronald Woods that he had delivered substantial quantities of drugs to Ramsey in Washington at least eight times in 1993-94 and that Ramsey accounted for all of his kilogram-level sales.
The first transaction between Fierro and Ramsey took place in Georgetown in early 1993 when Fierro delivered approximately seven ounces of heroin to Ramsey. Seven times over the following year, Fierro delivered between one and ten kilograms of cocaine to Ramsey, selling him into two 39 kilograms of cocaine for approximately $20,-000 each. 1 The two men used a delivery procedure that involved a meeting, usually in a hotel room, where Fierro “fronted” Ramsey one or two kilograms. Ramsey then left to sell the cocaine and returned later with payment. Fierro then fronted Ramsey another one or two kilograms and Ramsey repeated the procedure until all of the drugs had been sold, usually within one week. In mid-1994, at his wife’s insistence, Fierro left the drug trade.
In September 1995 DEA decided to use Fierro in a “reverse” undercover operation against Ramsey. DEA’s initial plan was to conduct the transaction differently from the way Fierro and Ramsey had traditionally done business — by making Ramsey pay for the drugs up front. DEA also sought to increase its control over the operation by having DEA Agent Robert Valentine pose as a drug dealer. Fierro’s role was to facilitate the exchange between Valentine and Ramsey.
Between mid-September 1995 and his arrest on November 21, 1995, Ramsey and Fierro had numerous recorded telephone and face-to-face conversations about drug transactions. Most of the conversations were recorded by DEA or by Fierro using DEA-supplied equipment. On September 25, 1995 Ramsey met Fierro in a hotel room. During a videotaped conversation, they discussed a *983 five-kilogram transaction and the fact that Valentine, posing as the distributor, required payment up front. While Ramsey was eager to move several kilograms, he did not have the cash to buy the drugs at delivery. On October 6, 1995 Valentine and Ramsey met without Fierro at a restaurant. Ramsey mentioned that Washington was currently “dry” of cocaine on both the wholesale and retail levels, a fact consistent with DEA information. Ramsey wanted to know if the drugs could be fronted but Valentine refused. Nevertheless, Valentine assured Ramsey that he would contact him about selling five kilograms of cocaine.
On October 24, 1995 Valentine and Fierro met Ramsey at a hotel. They had cocaine with them. In an audio taped conversation Ramsey asked to see the cocaine but, after going “around and around” with Valentine, still refused to pay up front. Tr. at 506. The three men arranged to meet again on November 2, 1995. On November 2, in a videotaped conversation in Valentine’s car, Valentine showed Ramsey five one-kilogram bricks. Ramsey said that he could move the cocaine quickly and offered to pay for one kilogram but not until 8:00 p.m. that evening. Becoming increasingly suspicious, Valentine rejected the offer.
After this transaction fell through, it was clear to DEA that Ramsey would not deal unless he was fronted the drugs and that Ramsey preferred to deal only with Fierro. Therefore, DEA changed its strategy by pulling Valentine out of the operation and instructing Fierro to arrange a buy using his old procedure. On November 15, 1995 Fier-ro contacted Ramsey and offered to front him five kilograms on November 21, 1995. When Ramsey arrived at Fierro’s hotel room on the 21st, Fierro showed him the five one-kilogram bricks. Agreeing to a cost of $20,-000 each, Ramsey decided to take two kilograms and said that he would return for the other three. Ramsey then placed the two bricks inside a black duffle bag and left the room. He was arrested by DEA agents in the hallway and the drugs were recovered from his bag. 2
On May 14, 1996 Ramsey’s jury trial commenced in the district court. On May 21, 1996 the jury returned a guilty verdict on the first count. Before sentencing, Ramsey filed a pro se motion for a new trial, arguing ineffective assistance of counsel. The district court appointed new counsel on September 16, 1996 and issued an order on June 27, 1997 denying Ramsey’s new trial motion as not timely filed. After a hearing, the district court denied Ramsey’s objections to the presentence report in a December 15, 1997 order. On December 17, 1997 the district court sentenced Ramsey to 210 months’ imprisonment followed by eight years of supervised release. Ramsey timely filed this appeal, requesting that his conviction be reversed or, alternatively, that he be resen-tenced.
II. Discussion
A.
On appeal, Ramsey advances several arguments, all without merit. First, Ramsey argues that the district court erred by twice admitting Valentine’s testimony about Ramsey’s past criminal history. The district court, however, did not abuse its discretion
3
in admitting the evidence because Valentine’s testimony was not elicited to show Ramsey’s propensity to commit a crime,
see
Fed. R.Evid. 404(a), but rather as a response to defense counsel’s attempts to challenge the voluntariness of Ramsey’s statement and to defense counsel’s theory that DEA had entrapped Ramsey based on the “lies” of its
*984
informant, Fierro. As the record manifests, Ramsey’s counsel raised the subject of his chent’s extensive criminal history.
See United States v. Davis,
Second, Ramsey contends that Valentine provided opinion testimony about the drug trade even though he was not qualified as an expert witness under Federal Rule of Evidence 702.
4
We believe that the district court did not plainly err in admitting this testimony. Although the trial judge never formally qualified Valentine as an expert witness, his testimony functionally satisfied the requirements for expert testimony set forth in Federal Rule of Evidence 702.
5
See United States v. Walls,
We also find no plain error in the district court’s failure to instruct the jury regarding the proper weight to be given Valentine’s opinion testimony since Ramsey can show no prejudice from the admission of that testimony.
See United States v. Olano,
Nor do we accept Ramsey’s contention that Valentine’s purported opinion testimony violated Federal Rule of Evidence 704 given the context of the prosecutor’s question and Valentine’s answer.
See United States v. Smart,
We next reject Ramsey’s claim of entrapment as a matter of law because the record contains ample evidence that Ramsey was predisposed to commit a drug offense.
See United States v. Neville,
Nor
did the district court
err
in counting the 39 kilograms of cocaine Ramsey purchased from Fierro in 1993-94 as part of the “same course of conduct” as Ramsey’s offense of conviction under the Sentencing Guidelines. U.S.S.G. § 1B1.3(a)(2) (requiring district court to determine offense level “solely with respect to offenses ... that were part of the same course of conduct or common scheme or plan as the offense of conviction”);
see United States v. Ramsey,
No. 95-326, at 3-6 (D.D.C. Dec. 15, 1997) (sentencing opinion);
see also United States v. Pinnick,
Finally, Ramsey cannot establish sentencing entrapment because the district court correctly found that he was predisposed to purchase five kilograms on November 21,1995.
See United States v. Shepherd,
B.
Ramsey’s
pro se
challenge
8
requires a lengthier discussion not because of its merit but because our Circuit has not heretofore ruled on the challenge that our sister circuit courts have rejected. Ramsey asks this Court to consider whether the Government’s use of Fierro as an informant violated 18 U.S.C. § 201(c)(2).
9
Ramsey made his challenge after the Tenth Circuit, in an unprecedented
10
decision, held that a federal prosecutor’s agreement granting leniency to an accomplice in return for truthful testimony as a government witness violated the plain
*987
language of section 201(c)(2).
See United States v. Singleton,
For several reasons, we hold that section 201(c)(2) does not prohibit the Government from granting leniency in exchange for truthful testimony.
We first look to the Dictionary Act, 1 U.S.C. § 1, which is to be used “[i]n determining the meaning of any Act of Congress, unless the context indicates otherwise,” and note that its definition of “whoever” does not expressly include the United States. 1 U.S.C. § 1 (defining “whoever” to include “corporations, companies, associations, firms, partnerships, societies, and joint stock companies, as well as individuals”). Moreover, we conclude that the meaning of “[wjhoever” in section 201(c)(2) should be limited by the canon of construction that a statute does not apply to the government or affect governmental rights unless the text expressly includes the government. In
United States v. Nardone,
The
Nardone
canon also applies if application of the statute to public agents would create an obvious absurdity.
See id.
at 384,
*988
We first conclude that application of section 201(c)(2) to the United States would deprive the sovereign of a critically important interest, one that is well established in our legal system and recognized by the courts, the Congress and, more recently, the United States Sentencing Commission. The prosecutorial prerogative to recommend leniency in exchange for truthful testimony arises from English common law,
see Ware,
that an accomplice duly admitted as a witness in a criminal prosecution against his associates ... , if he testifies fully and fairly, will not be prosecuted for the same offence_ When he fulfills those conditions he is equitably entitled to a pardon, and the prosecutor, and the court if need be, when fully informed of the facts, will join in such a recommendation.
The Whiskey Cases (United States v. Ford),
Circuit courts have been more explicit in their approval of a prosecutorial plea agreement with an accomplice or eodefendant conditioned on his truthful testimony for the Government.
See, e.g., United States v. Gomez,
Moreover, the Federal Rules of Criminal Procedure recognize and accept plea bargaining. Although Rule 11(e), which sets out the procedure governing plea agreements, does not identify the types of commitments the Government may ask of individuals in exchange for leniency, the Advisory Committee notes recognize that an agreement may require more than relinquishing the right to *989 trial. According to the notes to the 1975 amendments of Rule 11:
[It is apparent, though not explicitly stated, that Rule 11(e) contemplates that the plea agreement may bind the defendant to do more than just plead guilty or nolo contendere. For example, the plea agreement may bind the defendant to cooperate with the prosecution in a different investigation. The Committee intends by its approval of Rule 11(e) to permit the parties to agree on such terms in a plea agreement.]
Fed.R.Crim.P. 11 Advisory Committee’s notes (1975) (brackets in original); see also id. Advisory Committee’s notes (1974) (“plea agreements] may also contribute to the successful prosecution of other more serious offenders”).
In addition, both the United States Code and the Sentencing Guidelines contemplate the prosecutor’s use of a plea agreement in exchange for truthful testimony against a defendant. For example, the Sentencing Reform Act of 1984 established the United States Sentencing Commission and explicitly required it “to take into account a defendant’s substantial assistance in the investigation or prosecution of another person who has committed an offense.” 28 U.S.C. § 994(n). The 1984 Act also allows a court on the Government’s motion “to impose a sentence below a level established by statute as minimum sentence so as to reflect a defendant’s substantial assistance in the investigation or prosecution of another person who has committed an offense.” 18 U.S.C. § 3553(e). The Sentencing Guidelines themselves authorize the sentencing court to depart downward for any defendant who provides “substantial assistance in the investigation or prosecution of another person who has committed an offense.” U.S.S.G. § 5K1.1. Among the factors the court may consider in determining whether to grant the Government’s motion for downward departure are “the truthfulness, completeness, and reliability of any information or testimony provided by the defendant.” U.S.S.G. §' 5K1.1(a)(2).
Moreover, application of section 201(c)(2) to the Government obstructs the sovereign’s, not the individual prosecutor’s, interest in plea agreements inasmuch as the prosecutor brings federal criminal charges in the name of the United States. As the Sixth Circuit aptly noted:
When an assistant United States Attorney (AUSA) enters into a plea agreement with a defendant, that plea agreement is between the United States government and the defendant. When an AUSA uses at trial testimony obtained through a plea agreement or an agreement not to prosecute, he does so as the government'. An AUSA who, pursuant to the provisions of the United States Sentencing Guidelines, moves for a downward departure under § 5K1.1, does so as the government.
Ware,
Nor are we persuaded by any assertion that the Congress intended section 201(c)(2) “to prevent fraud, injury, or wrong” arising from government offers of leniency in exchange for truthful testimony. A prosecutor is obligated to disclose any benefit conferred on any witness,
see Giglio,
In addition, we believe this case falls within the second class of cases to which the
Nardone
canon applies. Application of section 201(c)(2) to a federal prosecutor offering leniency in exchange for truthful testimony works obvious absurdities. To interpret section 201(e)(2) as the Tenth Circuit originally did,
see Singleton
The application of section 201(c)(2) to public officers also produces an absurd conflict with statutory schemes prescribing reduced sentences and immunity for co-conspirators and accomplices who provide testimony for the Government.
See, e.g.,
18 U.S.C § 3521 (Witness Relocation and Protection Act authorizing Attorney General to exchange things of value for witness’s agreement “to testify”); 18 U.S.C § 3553(e) (reduction below statutory minimum sentence authorized in exchange for “substantial assistance”); 18 U.S.C §§ 6001-05 (federal immunity statutes); 28 U.S.C. § 994(n) (requiting Sentencing Commission to provide for sentencing guideline reductions);
Gabourel,
If we were to find the language of 18 U.S.C. § 201(c)(2) ambiguous, which we do not, an examination of the relevant legislative history would be appropriate.
See Saadeh v. Farouki,
Finally, even if federal prosecutors were subject to section 201(c)(2), that fact would not justify excluding Fierro’s testimony. The Congress prescribed a fine or imprisonment for a violation of section 201(c)(2). “Where Congress has both established a right and provided exclusive remedies for its violation, we would ‘encroach upon the prerogatives’ of Congress were we to authorize a remedy not provided for by statute.”
Ware,
III. Conclusion
For the foregoing reasons, we hold that 18 U.S.C. § 201(c)(2) does not prohibit the Government from granting leniency in exchange for a witness’s truthful testimony. As discussed earlier, Ramsey’s other assignments *992 of error are without merit. Accordingly, the defendant’s conviction and sentence are
Affirmed.
Notes
. The district court ruled that Ramsey’s seven cocaine transactions with Fierro were admissible to show intent and absence of mistake under Fed.R.Evid. 404(b) but it ruled any reference to the heroin from their first transaction inadmissible under Fed.R.Evid. 403.
. Ramsey gave DEA a written statement before signing a written waiver of his Fifth and Sixth Amendment rights. After the statement had been admitted into evidence at trial, the district court suppressed the statement. Ramsey’s defense counsel affirmatively asked that a mistrial not be granted. The district court instructed the jury to disregard the statement and related testimony.
. If defense counsel properly preserved his objection at trial, we review the district court’s admission of evidence for abuse of discretion.
See United States v. Salamanca,
. Because Ramsey made no objection at trial, our review is for plain error.
See Lewis,
. Rule 702 states in part: "[A] witness qualified as an expert by knowledge, skill, experience, training, or education, may testify thereto in the form of an opinion or otherwise.”
. To establish entrapment Ramsey must first show that he was induced by the Government to commit a crime he otherwise would not have committed. If Ramsey meets his burden, the Government must then prove beyond a reasonable doubt that he was predisposed to commit the crime.
See Neville,
.In any event our decision affirming the district court’s finding that Ramsey’s relevant conduct included the 39 kilograms that he purchased in 1993-94 makes his sentencing entrapment argument moot. The district court attributed 44 kilograms of cocaine to Ramsey, of which five kilograms were from his November 21, 1995 offense of conviction, in calculating a base offense level of 34. Nevertheless, Ramsey asserts that he was only predisposed to purchase one of the five kilograms of cocaine from Fierro on November 21, 1995. See Appellant’s Br. at 31-32; Appel-lee’s Br. at 31 & n.22. But see Sentencing Tr. at 13 (Ramsey’s counsel informed court that relevant amount of drugs was "two kilograms of cocaine [Ramsey] walked out the door with”). According to U.S.S.G. § 2D1.1(c)(3), however, "[a]t least 15 KG but less than 50 KG of [c]o-caine" places Ramsey at level 34. Thus, reducing the amount of cocaine attributable to Ramsey by four (or even five) kilograms is of no significance.
.
Because Ramsey makes this argument for the first time on appeal, we apply the plain error standard of review.
See
Fed.R.Crim.P. 52(b);
United States v. Olano,
. Section 201(c)(2) subjects to criminal liability: "Whoever ... directly or indirectly, 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” in a federal trial or proceeding.
. Until Singleton, no other court in the thirty-six year history of section 201(c)(2) had applied its prohibition to a prosecutorial grant of leniency in exchange for truthful testimony.
.
The second exception to this class of cases provides that “the sovereign is embraced by general words of a statute intended to prevent injury and wrong” even if the statute infringes upon a recognized government prerogative.
Nardone,
. As at least two courts have noted,
Nardone
did not expressly so limit the canon's applicability.
*988
See Ware,
. Section 201(b)(3) subjects to criminal liability:
Whoever ... directly or indirectly, corruptly gives, offers, or promises anything of value to any person, or offers or promises such person to give anything of value to any other person or entity, with intent to influence the testimony under oath or affirmation of such first-mentioned person as a witness [in federal trials or proceedings] or with intent to influence such person to absent himself therefrom....
18 U.S.C. § 201(b)(3) (emphasis added). That section 201(b)(3) applies to federal prosecutors while section 201(c)(2) does not, despite the similarities between the two sections, follows from *990 Mardone; the Government has no recognized interest in paying a witness to give untruthful testimony and no absurdity would result in punishing a prosecutor who offers a witness money or any other thing of value to obtain untruthful testimony.
. As the Sixth Circuit correctly noted:
This result cannot be avoided by attempting to argue that the language of the statute forbids only the use of the testimony from a witness who has entered into the plea agreement, not the plea agreement itself. Because a defendant who enters into a plea agreement pursuant to Rule 11 must appear before the court and enter his plea, the defendant’s entry of that plea is testimony.
Ware,
