Edmund P. Rossy, Jr. was convicted of conspiracy to possess with intent to distribute cocaine, possession with intent to distribute cocaine and travel in interstate commerce to promote drug trafficking. The district court sentenced Rossy under the Sentencing Guidelines to 121 months on each of the first two counts and 60 months on the third count, all to run concurrently. Rossy challenges both the conviction and the sentences on a number of grounds. We affirm.
I
Rossy argues that his conviction should be reversed and that he .should receive a new trial for two reasons. First, he contends that the district court committed reversible error by refusing to give one portion of the Seventh Circuit’s pattern jury instruction on conspiracy. Second, Rossy claims that the prosecution’s failure to disclose certain witness statements prior to trial deprived him of a fair trial. We find both of these arguments to be without merit.
A. Jury Instructions
The district court refused to include in its instructions to the jury the following portion of the Seventh Circuit’s pattern jury instruction on conspiracy: “In determining whether the defendant became a member of the conspiracy you may consider only the acts and statements of that particular defendant.” Fed.Crim.J.1. § 5.11 (1980). In
United States v. de Ortiz,
B. Nondisclosure of Witness Statements
Rossy also contends that he is entitled to a new trial because the prosecution failed to disclose certain evidence prior to trial. Specifically, Rossy claims that the government was required to disclose the results of a search by DEA Agent Melick for Ros-sy’s alleged principal and certain statements of witnesses Kathy and Michael Strzelecki.
Agent Melick testified that he traveled to New York in search of a Mr. Meira, for whom Rossy allegedly worked, but that the Meira whom he found living at the address given him by government witness Kevin Keller turned out to be the wrong man. Rossy argues that he could have used this information to impeach Keller’s credibility and that therefore the government was required to disclose it prior to trial under
Brady v. Maryland,
Rossy’s claims as to the statements of Kathy and Michael Strzelecki are even less meritorious. Kathy Strzelecki testified that Rossy’s codefendant, Craig Agrell, told Kevin Keller that Rossy “was trying to take over Kevin’s area.” Tr. at 251. Kathy Strzelecki’s husband, Michael, testified that Rossy helped Keller cut open a package of cocaine that Keller and Rossy had brought to Michael’s house, and that he saw Rossy count the money that Michael paid for the cocaine. Rossy argues that the government’s failure to disclose this evidence prior to trial violated Federal Rule of Criminal Procedure 16(a)(1)(A), which provides that a defendant is entitled to pre-trial discovery of any of his own statements in the possession of the government. It is not at all clear, however, that the prosecution even violated this rule; neither of the Strzeleckis testified to any “statement” of Rossy and the prosecution apparently was not “in possession” of the testimony to which Rossy objects.
2
More important, even if the government had violated the discovery rule, Rossy offers no authority for the claim that such a violation would be grounds for a new trial. Due process requires only that the prosecution disclose evidence that is “favorable to an accused.”
See Brady,
II
Rossy also challenges the sentences imposed by the district court. He argues, first, that the Sentencing Guidelines should not have been applied at all because the government failed to prove that his activities continued beyond November 1, 1987, the effective date of the Guidelines. Second, Rossy claims that the district court erred in basing his sentence on its determination that the conspiracy involved five or more kilos of cocaine because the evidence does not support such a conclusion. Finally, Rossy contends that he should have received a two-level decrease in his offense level as a “minor participant” in the conspiracy, and that the court should have granted him a downward departure from the Guideline range based on a variety of mitigating circumstances.
*325 A. Applicability of Sentencing Guidelines
The Sentencing Guidelines promulgated by the United States Sentencing Commission pursuant to the Sentencing Reform Act of 1984, 28 U.S.C. § 994(a), took effect on November 1, 1987, and apply only to crimes committed on or after that date. Rossy contends that the Guidelines do not apply to him because the government failed to prove that he engaged in any acts in furtherance of the conspiracy on or after November 1,1987. Rossy misconceives the nature of the government’s burden here.
The government is required to prove sentencing factors under the Guidelines only by a preponderance of the evidence.
United States v. Macias,
The district court found that the conspiracy “was in fact extant” after November 1, 1987. Tr. Vol. 9, p. 1105. We review such a factual determination by the sentencing court for clear error.
United States v. Miller,
B. Amount of Cocaine Distributed by Rossy
Rossy claims that the district court erred in its finding that he had distributed at least five kilograms of cocaine. Because the amount of narcotics involved is a factor under the Sentencing Guidelines, the government’s burden is satisfied by a preponderance of the evidence.
Macias,
C. Denial of “Minor Participant” Status
Rossy argues that he should have been sentenced as a “minor participant” under the Guidelines because his only role in the conspiracy was that of a “somewhat naive courier.” Appellant’s Br. at 21. We have previously held that there is no per se rule entitling drug couriers to minor participant status.
Osborne,
We have emphasized the important role that couriers play in a drug distribution network.
See id.
at 1159;
United States v. Briscoe,
[The defendant’s] transportation of a total of eleven ounces of cocaine in two separate trips from Florida to Wisconsin certainly can be considered as nothing but playing an integral role in the conspiracy and does not serve to justify a lowering of his culpability to a level substantially below that of his conspirators.
D. Denial of Downward Departure
Finally, Rossy asks us to reverse the district court’s decision not to depart downward from the Guideline range in spite of the mitigating factors presented by Rossy. We have previously held that the decision not to depart from the Guidelines is entrusted to the sentencing court’s unre-viewable discretion, at least where, as here, the court carefully reviewed the allegedly mitigating factors before making that decision.
United States v. Macias,
Ill
We find all of Rossy’s claims to be without merit, and therefore the district court’s decision is Affirmed.
Notes
. Kathy’s testimony was a surprise to both sides; Michael’s testimony did not appear in his written statement.
. The government cites
United States v. Dorn,
. Rossy argues that Keller’s testimony establishes only IV2 kilos of cocaine, because Keller claimed that each of his three transactions with Rossy took place during a separate trip to New York, yet "there were only 2 total trips to New York.” Appellant's Br. at 6. Even a cursory reading of the transcript, however, reveals that Keller described three distinct trips to New York. Tr. Vol. 5, pp. 487-89, 490-91, and 497. *326 Although at one point Keller referred to the second of these trips as "that first trip,” it is clear from the context that he simply misspoke. Id. at 497. Certainly, a reasonable factfinder could conclude that such was the case.
