Anthony Womack was arrested when he was indicted, with several other individuals, for conspiracy to possess with intent to distribute and distribution of cocaine in excess of five kilograms, in violation of 21 U.S.C. §§ 841 and 846. At his trial, the jury heard testimony from several witnesses about Womack’s role in a cocaine-distribution operation led by Carl Parker and Roosevelt Turner in the St. Louis metropolitan area; Turner supplied Wom-ack with cocaine, which Womack then sold to others. The jury also heard from witnesses regarding their cocaine purchases from Womack and their knowledge of Womack’s other drug deals.
The jury convicted Womack of conspiracy to distribute cocaine, finding by special verdict that the amount of cocaine was in excess of five kilograms. The district court sentenced Womack to 151 months’ imprisonment.
*794 Womack appeals both his conviction and sentence, raising three issues. First, he challenges the sufficiency of the evidence, arguing that the evidence did not show a single conspiracy, as alleged in the indictment. Second, he argues that the district court abused its discretion in denying his motion for a new trial on the ground that the government’s star witness, Joe Sharp, committed perjury. Third, Womack contends that the district court erred in imposing a sentence adding a firearm enhancement and finding that the amount of cоcaine attributable to Womack was in excess of five kilograms. We affirm.
I. Conspiracy Variance
Womack first argues that the indictment charged a single, overarching conspiracy but the evidence failed to establish this single conspiracy. Instead, he argues, if the government proved anything, it proved the existence of multiple conspiracies, сreating a variance.
1
A conspiracy variance claim is a challenge to the sufficiency of the evidence, which we review under a highly deferential standard.
See United States v. Nitch,
To overturn a conspiracy conviction because of a variance, the defendant must show that there was a variance between what was charged in the indictment and the evidence at trial and that he was prejudiced by this variance.
Williams,
Because Womack failed to ask for a jury instruction on multiple conspiracies or otherwise bring this challenge to the attention of the district court, we review that portion of Womack’s conspiracy variance claim for plain error only.
See United States v. Briscoe,
At trial, the government had the burden of proving the existence of a. single conspiracy to distribute cocaine and that Womack knowingly became a member of the conspiracy with the intention to further the conspiracy.
The testimony established that Turner, a co-leader with Carl Parker of the cocaine-distribution ring, supplied Womack and Kareem Hamilton with multiple kilograms of cocaine, which Womack *795 and Hamilton then sold to others. Joe Sharp, who pleaded guilty to conspiring with Wоmack and others, testified that he acted as the courier, delivering cocaine concealed in dog food bags on at least ten occasions from Turner to Womack between May 2004 and January 2005. He further testified that he delivered kilogram-quantities to Womack. Sharp received $50 from Womack for each delivery. Sharp also testified that, at Turner’s direction, he delivered two kilograms of cocaine from Womack to Hamilton. Consistent with Sharp’s testimony, Hamilton testified that this delivery occurred around Christmas of 2004. Sharp also identified the speakers in various taped telephone conversations. In one conversation, Turner directed Womack on how to package the cocaine and then told Sharp to pick the cocaine up from Womack and deliver it to Hamilton. In a different conversation between Womack and Turner, Sharp’s voice can be heard informing Womack that he, Womack, did not have to report to Turner and that he, Sharp, would contact Turner to report that he had picked up the packages for delivery. According to Sharp, it was standard procedure for him to call Turner to let him know that the cocaine had been picked up or delivered.
Anthony Watts, who pleaded guilty to conspiring with Womack and others, testified that he purсhased four and a half ounces of cocaine from Womack in the summer of 2003. The cocaine that he had purchased was in chunks, indicating that it had been broken directly from a kilogram of cocaine, and was supplied to Womack by Turner. In 2004, Watts paid Womack $25,000 for a kilogram of cocaine. Later, Watts tried to buy anоther kilogram of cocaine from Womack but was unsuccessful; Womack could not reach Turner to get the cocaine.
Andre Denton also testified that Wom-ack had told him that Turner was his source for cocaine. Corey Neal testified that Joe Sharp was a “runner” for Turner and that Sharp would often show up at Womack’s hоme with a sack in his hand and then leave. Taken together, this testimony established the existence of a conspiracy among Turner, Womack, Hamilton, Sharp, and Watts to possess with intent to distribute cocaine in excess of five kilograms.
Womack argues that evidence also showed that Turner, Sharp, and Hamilton could have beеn involved in their own separate conspiracy and that Womack had separate dealings with Watts, Brian Greer, Denton, Anthony Stokes, and Neal. He argues further that there was no evidence that any of the cocaine delivered by Sharp ended up in the hands of Watts, Greer, Denton, Stokes, or Neal and that there was no evidence to tie all of these people into one solitary conspiracy. However, “[t]o join a conspiracy ... is to join an agreement, rather than a group.”
Townsend,
*796 II. Motion for a New Trial
Womack next argues that the district court abused its discretion in denying his motion for a new trial based on newly discovered evidence: Joe Sharp’s perjured testimony.
Following his testimony and the conclusion of all evidence on April 4, 2006, Sharp was required to submit a urine sample for a drug test by the probation office. The test results showed a presumptive positive for marijuana. Sharp admitted tо smoking marijuana on March 25, 2006 and signed a written statement to that effect. Neither the government nor Womack learned of Sharp’s positive drug test until after the jury rendered its verdict. Eventually, Womack moved for a new trial based on newly discovered evidence, arguing that Sharp had perjured himself when testifying at Womack’s trial by stating that he was not using drugs. 2 After a hearing, the district court denied Womack’s motion for a new trial, finding that Womack had not established that a misrepresentation had occurred and that evidence that Sharp had used marijuana recently was cumulative and immaterial.
More specifically, the district court explained that the question posed tо Sharp about “not using any other narcotic drugs or anything like that” was ambiguous as to the time frame and that Sharp could have interpreted the question to mean that very day. The district court also explained that Sharp may not have considered marijuana to be a “narcotic drug” since his prior addiction was to cocаine. Thus, Womack had failed to show that a misrepresentation had occurred. The district court reasoned further that since the jury also had heard that Sharp had been addicted to cocaine and that he had used drugs, evidence that Sharp had used marijuana recently was cumulative and, accordingly, immaterial. The district сourt then stated that there was no evidence that Sharp had used marijuana on the date that he testified and that Sharp’s testimony was unaffected by any marijuana use. The district court also found that Sharp was a credible witness and that it would not have made a difference to the jury had they known that Sharp had made a misrepresentation about smoking marijuana or that he had smoked marijuana because he was otherwise so credible. To win a new trial based on a claim that a government witness committed perjury (assuming as in this case that the government did not knowingly present the false testimony), Womack “will have to show that the existence of the perjured testimony (1) came to [his] knowledge only after trial; (2) could not have been discovered sooner with due diligence; (3) was material; and (4) would probably have led to an acquittal had it not been heard by the jury.”
United States v. Mitrione,
*797
In
Jarrett v. United States,
Jarrett
is directly applicable here. Given the ambiguities in the questions posed to Sharp about his drug use, we agree with the district court’s finding that Womack did not establish that Sharp had perjured himself. Even assuming that Sharp gave perjured testimony, however, his drug use was only relevant as to his ability “to perceive the underlying events and testify lucidly at trial.”
Id.
at 1445
(citing United States v. Leonard,
III. Womack’s Sentence
Finally, Womack argues that the district court erred in enhancing his sentence for possession of a firearm and finding Womack’s relevant conduct to include between five and fifteen kilograms of cocaine. Our review of the district court’s factual findings at sentencing is for clear error; аnd our review of the application of those facts to the Sentencing Guidelines is
de novo. United States v. Haddad,
At the time of his arrest, Womack informed the arresting officers that he had a gun in his bedroom closet. At Womack’s direction, the officers recovered a .40 caliber semiautomatic pistol, which was on the top shelf of the closet under somе clothing, and $16,830 in cash, bundled in various denominations, from Womack’s nightstand. After hearing the testimony at trial that Womack had a surveillance system at his home, that Sharp delivered cocaine to Womack at his home, and that Womack sold cocaine to Neal from his home, the district court inferred that the $16,830 was drug money and that the gun was сonnected to the cocaine trafficking. The district court therefore applied a two-level enhancement to Womack’s offense level, pursuant to U.S.S.G. § 2Dl.l(b)(l). We find that the district court did not clearly err in doing so.
“To support an enhancement under § 2Dl.l(b)(l), the government bears the burden of proving by a preponderance of the evidence that a gun was possessed during the commission of the offense or relevant conduct.”
United States v. Olson,
*798
The district court also did not err in finding that Womack’s relevant conduct included between five and fifteen kilograms of cocaine. The jury rendered a special verdict finding that Womack conspired to distribute in excess of five kilograms of cocaine. On Sharp’s testimony alone, who testified that he made ten or more deliveries of cocaine to Womack and that he delivered kilogram-quantities to Womack, the jury and the district court could reach the reasonable conclusion that Womack’s relevant conduct included more than five kilograms of cocaine.
Moreover, the jury and the district court heard from Brian Greer, Anthony Watts, Andre Denton, and Corey Neal, who testified regarding the drugs that they had purchased or saw being purchased from Womack. Greer testified that he had bought four and a half ounces of cocaine from Womack at Womack’s house in November or December 2003. In January or February 2004, he purchased an additional nine ounces of cоcaine from Womack. Watts testified that he had purchased four and a half ounces of cocaine from Womack during the summer of 2003 and, during 2004, a kilogram of cocaine. Denton testified that he had witnessed Womack selling cocaine to “Chubbs” and Bacardi Holmes that was packaged in plastic sandwich bags. Neal testified that he did odd jobs for Womack and was paid between five and ten times with a gram or one-sixteenth of an ounce of cocaine. Neal also purchased a quarter-ounce of cocaine from Womack in the fall of 2004 and saw Wom-ack selling an ounce of cocaine each to three individuals. Womack hаs not identified anything in the record that would lead to the conclusion that testimony of the government witnesses was unbelievable. Accordingly, we find that the district court did not clearly err in finding for purposes of sentencing that Womack’s relevant conduct included between five and fifteen kilograms of cocaine.
IV. Conclusion
For the foregoing reasons, Womack’s conviction and sentence are Affirmed.
Notes
. A variance occurs when the facts proved at trial differ from those charged in the indictment.
See generally United States v. Miller,
. On direct examination, Sharp testified as follows:
Q. Getting out of time sequence just a little bit, was there a time you got yourself off of cocaine?
A. Yes, sir, it is.
Q. And about when would that have been?
A. At the turn of the millennium.
Q. Some time around 2000?
A. Yes.
On cross-examination by defense counsel, Sharp testified as follows:
Q. Now, you’ve stated that you got clean in about the year 2000, right?
A. Yes, sir, I did.
Q. And you're not using any other narcotic drugs or anything like that?
A. No, sir, I'm not.
