OPINION OF THE COURT
A jury fоund Russell Werme guilty of conspiracy to violate the Travel Act, 18 U.S.C. §§ 371, 1952(a)(3). Werme’s conviction was based on bribes he and Eugene Brault paid when they ran and managed B & B Insulation Company. We have jurisdiction pursuant to 28 U.S.C. § 1291. We will affirm.
I.
FACTS AND PROCEDURE
United Engineers and Constructors (“United”) was the primary contractor on the Seabrook Nuclear Power Plant construction project in Seabrook, New Hampshire. B & B, a subsidiary of Insulco, Inc., desired to participate in the Seabrook project as a subcontractor. Werme, then President of Insulco, Inc. learned that B & B was not on the qualified subcontractor/bidder’s list. Werme sent two B & B salesmen to meet with Timothy McCuen, United’s Chief Buyer, to remedy this situation. The B & B salesmen’s efforts failed because McCuen said he wanted to meet with a higher level B & B employee.
McCuen was dishonest. While employed by United, he accepted bribes in exchange for confidential bid information. McCuen was charged with bribery in 1981, but negotiated a plea and began cooperating with the federal government in its bribery and kickback investigations. McCuen did not, however, tell the FBI about bribes he accepted in connection with the Sеabrook contract. When these bribes were discovered, Ronald Mizzau, United’s buyer on the Sea-brook project, pleaded guilty to aiding and abetting McCuen in his bribery scheme on Seabrook. McCuen was then also charged with taking bribes, entered into a second agreement, and pleaded guilty to bribery. The details regarding McCuen’s receipt of bribes on the Seabrook progress are as follows.
In 1982, Frank Farese, a B & B consultant acquainted with McCuen, arranged a meeting between Werme and McCuen to discuss selling Seabrook bid information to Werme. At a January 1983 meeting in Philadelphia, Werme paid McCuen $2000: the first of several bribes for confidential bidding information.
*111 In April 1983, Werme used Farese as a messenger to give McCuen $4000 for access to competing Seabrook bids. Werme called defendant Eugene Brault, the sales manager of B & B, in Houston, and Brault flew from Texas to Philadelphia, where both men allegedly examined the competing bids before B & B submitted its proposal.
In August 1983, United sought clarification of subcontractors’ bids. Again, Werme made arrangements with McCuen to preview competing bids. This time, McCuen received free use of a rental car as payment. In return, he left Werme copies of the competing bids in a hotel room. In September 1983, Brault and Werme’s secretary travelled to Philadelphia to prepare B & B’s bid and to view confidential bid information.
In April 1984, when United solicited a re-bid on the Seabrook contract, Werme and Brault once again arranged to pay McCuen $3000 for confidential bid information. The day the re-bids were due, Brault paid $3,000 to McCuen in Philadelphia. As before, McCuen left copies of competing bids at a hotel where Brault retrieved them.
Werme and Brault were indicted and each сharged with: (1) one count of conspiracy to violate the Travel Act, 18 U.S.C. § 371; and (2) one count of violating the Travel Act, 18 U.S.C. § 1952(a)(3). A jury found Werme guilty of both counts, and Brault guilty of the Travel Act violation but acquitted him of conspiracy.
The district court granted Brault’s and Werme’s motion for judgment of acquittal on the Travel Act violation, finding that the special verdict did not set forth a theory upon which they could be found guilty. The court denied Werme’s motion to acquit him of conspiracy. The district court sentenced Werme to a suspended three-year prison term and plаced him on probation for five years, during which he must perform 300 hours of community service.
II.
ISSUES
Werme makes three allegations of error. First, he challenges the sufficiency of the conspiracy count of the indictment, claiming it did not contain all elements of the underlying Travel Act offense and, consequently, neither put him on notice of the charges against him nor afforded him double jeopardy protection. Second, Werme claims the district court erred by failing to give the jury a cautionary instruction he requested after the government used McCuen’s and Mizzau’s guilty pleas in its case against him and by allowing the government to inquire whether McCuen ever had been charged with extortion. Third, Werme claims the district court erred by allowing the prosecutor to argue to the jury, without supporting evidence, that Werme paid a bribe in September 1983.
We conclude that the conspiracy count of the indictment was legally sufficient, and that the district court did not err by allowing the prosecutor to argue the September 1983 bribe to the jury. We also conclude that it was harmless error to introduce the guilty pleas of McCuen and Mizzau and to allow the inquiry concerning whether McCuen had been charged with extortion. Thus, we will affirm.
III.
SUFFICIENCY OF THE INDICTMENT
Generally, each count of the indictment must set forth a sufficient description of the crime charged. The charging portion of a conspiracy count includes all paragraphs within that count except for allegations under the overt acts heading, unless those allegations are expressly incorporated by reference.
Joplin Mercantile Co. v. United States,
The charging portion of this conspiracy count alleges that Werme and Brault, along with others, “did conspire, combine, confederate and agreed to violate Title 18, United States Code, Section 1952(a)(3).” It further alleges that the purpose of the alleged conspiracy was to obtain confidential bid information in exchange for money or “other things of value.” Finally, the charging portion alleges that the conspiracy’s purpose was implemented through overt acts of bribery.
When reviewing the sufficiency of the indictment, we look at the entire indictment and determine de novo:
(1) whether the indictment contains the elements of the offense intended to be charged and sufficiently appraises the defendant of [the crime] he should be prepared to meet;
(2) whether the indictment is specific enough to make a plea of double jeopardy possible.
United States v. Wander,
An indictment charging a conspiracy under 18 U.S.C. § 371 need not specifically plead all of the elements of the underlying substаntive offense.
Wander,
In
Wander,
the defendants were charged with a conspiracy to violate the Travel Act. The defendants challenged the conspiracy count on sufficiency grounds, claiming that it failed to allege an unlawful act after the
*113
interstate travel. We disagreed, holding that the omission did not render the indictment fatally flawed.
Wander,
The conspiracy count of the indictment against Werme is sufficient and does not amount to “a deprivation of a significant protection of the indictment process.”
Wander,
In this case, the indictment satisfies the sufficiency requirement because it put Werme on notice that he was charged with a conspiracy to commit state law bribery through interstate travel or use of interstate facilities, a violation of 18 U.S.C. § 1952(a)(3). 2
The conspiracy count of the indictment is also specifiс enough to provide the double jeopardy protection required by
Wander.
The count describes a conspiracy “from at least January 1983 to and including April 19, 1984” in “the Eastern District of Pennsylvania and elsewhere,” to obtain “bids containing confidential information” from competitors on the Seabrook project for “money and other things of value.” App. at 13A-14A. This description is adequate to describe Werme’s crime and to protect Werme from attempts to prosecute him again for the same conspiracy to bribe charged in this indictment.
Grady v. Corbin,
— U.S. —,
IV.
GUILTY PLEA EVIDENCE
A.
Werme contends that the district court erred by admitting without a cautionary instruction evidence that McCuen and Miz-zau, who allegedly participated in the same criminal conspiracy, had pleaded guilty to related offenses. Werme maintains that the government improperly introduced this evidence as substantive proof of his guilt. The government contends the evidence was proper because it bore on the witnesses’ credibility and because McCuen’s plea was relevant to rebut the defense claim that he was acting as a government agent. We hold that Werme’s counsel did properly request a jury instruction as to the limited purposes for which the evidence could be used, but that the failure to give such an instruction in this case was harmless error.
We have long recognized that evidence of another party’s guilty plea is not admissible to prove the defendant’s guilt.
See, e.g., United States v. Gambino,
*114
The most frequent purpose for introducing such evidence is to bring to the jury’s attention facts bearing upon a witness’s credibility.
See id.
Proof that a witness has pleaded guilty or has agreed to plead guilty is highly relevant to show bias, a recognized mode of impeachment.
United States v. Abel,
In any criminal trial, the credibility of the prosecution’s witnesses is central. By eliciting the witness’ guilty plea on direct examination, the government dampens attacks on credibility, and forecloses any suggestion that it was concealing evidence. Such disclosure is appropriate.
Evidence of a guilty plea may be admissible for other permissible purposes in addition to impeachment. See id. Here, we agree with the government that evidence of McCuen’s guilty plea was admissible to rebut the defense assertion that McCuen was acting as a government agent when he engaged in the activities that formed the basis for that plea. McCuen’s willingness to plead guilty to a criminаl charge based on these activities was relevant to show that he did not believe he was acting as a government agent.
While evidence of a guilty plea may be admissible for impeachment and other permissible purposes, the party against whom the evidence is offered is entitled to a limiting instruction upon request. Rule 105 of the Federal Rules of Evidence provides that: “[t]he court, upon request, shall restrict the evidence to its proper scope and instruct the jury accordingly” (emphasis added). Because evidence of a cо-conspirator’s guilty plea is extremely prejudicial to the defendant on trial absent such an instruction, compliance with the mandatory duty imposed by Rule 105 is particularly important. We conclude Werme properly objected to the admission of the guilty pleas and asked the district court to give a limiting instruction to the jury against using the pleas as substantive evidence of his guilt. The following exchange between the court and Werme’s counsel occurred in chambers:
MR. PINSON: It’s my understanding that while Mr. McCuen is on the stand, you’re going to offer up some evidence оf [McCuen’s] conviction.
MR. COSTELLO: Yes.
MR. PINSON: Okay. Well, Your Hon- or, I don’t intend to go into exactly what he pleaded guilty to other than the fact that it was a bribery transaction. And the only reason why I bring it up is that from this vast wealth of potential illegal transactions that Mr. McCuen could have entered a plea to, he entered a plea to the $3,000 that is the subject matter of this litigation. And I think if they introduce that specific conviction, we’re entitled to an instruction at a later time as far as the weight that should be given that. I mean ordinarily they wouldn’t be offering up that particular type оf evidence. It would come in by way of impeachment.
* ¡fc * * * *
THE COURT: You mean the normal instruction regarding you should take into account the motivation of an individual who has been convicted and comes in and testifies or what?
MR. PINSON: No. The fact that ...
THE COURT: Or the actual — the nature of the conviction.
*115 MR. PINSON: Right. Yes, sir. The fact that he entered a plea to a bribery transaction involving $3,000 cannot be used to infer that we were guilty of paying the bribe.
******
MR. COSTELLO: Well, Your Honor, I can tell you right now. Basically at some point today, it’ll happen today, I’ll ask him did he plead guilty to any crimes and what were the crimes. And one of those crimes would be accepting thе $3,000, which is the subject of this prosecution.
App. at 96a-100a (emphasis added).
It is clear that Werme took issue with the evidence and did indeed request a curative instruction. Under these circumstances, it was error for the court not to give one.
See United States v. Gullo,
In
Bisaccia,
we recognized that, under certain extreme circumstances, use of a co-conspirator’s guilty plea could result in sufficient fundamental unfairness to give rise to a denial of due process.
As a result, we are not required to determine whether the district court’s erroneous admission of McCuen’s and Mizzau’s guilty pleas was harmless “beyond a reasonable doubt,”
see Chapman v. California,
We conclude that it is “highly probable” that admitting McCuen’s and Mizzau’s guilty pleas did not contribute to the jury’s verdict. The evidence against Werme was overwhelming. In addition to the testimony of McCuen and Farese detailing the scheme and Werme’s involvement in it, the government introduced transcripts of a conversation between Farese and Werme that took placе on May 22, 1984. Farese was wearing a body wire and recorded the following exchanges:
WERME: And uh, (pause) yeah uh, I wanna, I wanna see the bids.
FARESE: Tell him your gonna have the money up there one way or another.
WERME: Um hum.
FARESE: Gene [Brault] will have it.
WERME: Um hum.
FARESE: Okay, I’ll do that.
WERME: Thanks partner.
App. at 181a.
Other portions of this recording introduced at trial included Werme and Farese adding up the various payments made to McCuen, App. at 184A-185A, and a conversation in which Werme rationalized his actions:
WERME: And I’d say that, I’d guarantee I’d say that in court, I’d say that’s ah compare prices, is the client gettin’, gettin’ an equal product? Yes. Is he getting it at the cheapеr price than anybody else. Yes. And I believe that totally. It’s not a deal of sayin’ hey, I’mma pay you twenty five thousand dollars and well, throw these other suckers out and add five hundred thousand ...
FARESE: Yeah ...
WERME: or million dollars to my contract, it ain’t the deal.
* * * * * *
So I don’t have to apologize.
App. at 187a-188a.
In light of the more substantial and direct evidence against Werme, we have a “sure conviction” that the evidence that McCuen and Mizzau had pleaded guilty to related offenses did not prejudice Werme, and admitting it without a curative instruction was harmless error.
B.
On direct examination, the prosecutor asked McCuen if he was “еver charged with extortion.” This question was obviously designed to contradict Werme’s assertion that he was a victim of McCuen’s extortion. In other words, the prosecutor sought to have the jury infer that because McCuen was not charged with extortion, no extortion took place. Werme, in response to the question, immediately moved for a mistrial, but the judge refused his motion. We think that the prosecutor’s question was improper. To rebut Werme’s defense of extortion, the government was free to ask McCuen whether he had ever threatened anybody, but we think that the district court erred in allowing the prosecutor to inquire whether McCuen had been charged with extortion.
As we have explained above, the rule that a defendant is entitled to have the question of his guilt determined upon the evidence against him, not on whether someone else has been convicted of the same charge, is founded upon the notion that another person’s guilty plea or conviction with respect to similar or identical charges has only slight probative value on the question of the defendant’s guilt, but is extremely prejudicial.
See Gambino,
A number of factors may affect the government’s charging decision. In this *117 case, we cannot be sure why the government only charged McCuen with bribery, rather than extortion or both. Suffice it to say that the government’s decision not to charge McCuen with extortion has only slight probative value on the question whether extortion actually occurred in this ease. Yet presenting this evidence to the jury could have prejudiced Werme’s extortion defense, particularly in view of the district court’s failure to instruct the jury regarding the relevance, if any, of the government’s charging decision.
Although we find the district court erred by admitting the question about whether McCuen was charged with extortion, we are satisfied that the error was harmless. Fed.R.Crim.P. 52(a). More precisely, we conclude that it is “highly probable,” given the very strong evidence against Werme,
see supra
at pp. 115-116, that the error did not contribute to the jury’s verdict.
Toto,
V.
THE SEPTEMBER 1983 BRIBE
Werme contends that the district court erred by allowing the prosecutor to ask him on cross-examination whether a bribe was paid in September 1983. Werme further contends that the prosecutor improperly argued the existence of a September 1983 bribe to the jury in his summation.
The scope of cross-examination is left to the sound discretion of the trial court, and this court will reverse only for an abuse of that discretion.
United States v. Reed,
Before closing arguments, Werme sought to prevent the prosecutor from referring to a September 1983 bribe in summation. The district court initially was inclined to prohibit comment on the bribe, but later concluded that the prosecutor could argue the reasonable inference of the bribe, but could not argue the amount of the bribe.
The prosecutor is entitled to considerable latitude in summation to argue the evidence and any reasonable inferences that can be drawn from that evidence.
United States v. Scarfo,
VI.
CONCLUSION
The conspiracy count of this indictment is sufficient because it sets forth the essen *118 tial elements under 18 U.S.C. § 371, puts Werme on notice that he is being charged with a conspiracy to violate the Travel Act, 18 U.S.C. § 1952(a)(3), and allows him to plead his conviction as a bar to future prosecution. The district court committed a harmless error by admitting the guilty pleas of McCuen and Mizzau into evidence and by allowing the prosecutor to inquire whether McCuen had been charged with extortion. Finally, thе district court did not err by allowing the prosecutor to argue the September 1983 bribe to the jury. For the foregoing reasons, we will affirm Werme’s conviction for conspiring to violate the Travel Act.
Notes
. Although
Wander
provides that "[c]onspiracy indictments need not allege
all
of the elements of the offense which the defendants are accused of conspiring to commit,”
. Werme relies on
United States v. Hooker,
. We note that harmless error analysis is appropriate in this setting, since the error alleged is a "trial error,” rather than a structural defect “affecting the framework within which the trial proceeds.”
Arizona v. Fulminante,
— U.S. —,
. Because of the great potential for unfairness resulting from the introduction of a co-conspirator’s guilty plea, we urge the district courts not to leave resolution of objections thereto to the vagariеs and pressures of trial but rather, in exercise of their case management prerogatives, to flush out such problems before trial. This can be done by encouraging counsel to file in limine motions and by holding hearings on such motions (or taking the matter up at pretrial or status conferences). Inter alia, the government can be called upon to state its proposed use of such evidence, and the defense can be called upon to state whether it proposes to impeach government witnesses on bias or credibility grounds by reference tо the guilty plea. At such conferences or hearings, the precise nature of cautionary or jury instructions can be worked out, and hence not be forgotten in the exigencies of trial.
. In like manner, we reject Werme’s contention that the evidence about the September 1983 bribe violated Fed.R.Evid. 404(b). "In the Rule 404(b) context, similar act evidence is relevant only if the jury can reasonably conclude that the act occurred and the defendant was the actor.”
Huddleston v. United States,
