Clive Ulet McLean, Jr. appeals from the sentence imposed by the United States District Court for the Northern District of New York (Lawrence E. Kahn, Judge) pursuant to a judgment of conviction entered upon his plea of guilty to one count of conspiracy to distribute marijuana, in violation of 21 U.S.C. § 846, 1 and three *130 counts of possession with intent to distribute marijuana, in violation of 21 U.S.C. § 841(a)(1). 2 Although the indictment charged that the amount of marijuana involved in the conspiracy exceeded 100 kilograms, the District Court acceрted McLean’s plea despite his refusal to allocute to any drug quantity. The District Court subsequently sentenced McLean principally to a 63-month concurrent sentence on each of the four counts based on its own findings that the conspiracy McLean entered into involved more than 100 kilograms of marijuana. The 63-month concurrent sentence on each count exceeds by three months the statutory maximum applicable for an offense involving an unspecified quantity of marijuana. See 21 U.S.C. § 841(b)(1)(D). 3
On appeal, McLean challenges only his sentence, contending that: (1) the District Court’s findings with respect to the quantity of marijuana involved in the conspiracy were clearly erroneous; (2) the District Court erred in declining to apply a two-point deduction to his Base Offense Level for acceptance of responsibility; and (3) his sentence violates the teachings of
Apprendi v. New Jersey,
We find no basis to disturb the findings of the District Court with respect to either the quantity of marijuana involved or McLеan’s acceptance of responsibility. With respect to McLean’s Apprendi claim, we hold that, in these circumstances, it was plain error to impose a sentence on each count in excess of the statutory maximum authorized for a crime involving an unspecified amount of marijuana, but that, because the United States Sentencing Guidelines require the District Court to impose consecutive terms of imprisonment to the extent necessary to achieve the total punishment mаndated by the Guidelines, the error did not affect McLean’s substantial rights.
Accordingly, we affirm the judgment of the District Court.
I. Background
A. McLean’s Guilty Plea
On October 4, 1999, McLean pleaded guilty to all four counts of an indictment. The indictment charged McLean with one count of conspiring to possess with intent to distribute and to distribute marijuana in violation of 21 U.S.C. § 846, and with three counts of possessing with intent to distribute and distributing marijuana in violation of 21 U.S.C. § 841(a)(1). Count 1 of the indictment specified that “[t]he amount of marihuana involved in this conspiracy exceeds 100 kilograms.” The remaining counts did not specify the quаntity of drugs involved.
Although McLean sought to enter a guilty plea, he continued to contest the amount of marijuana charged in Count I of the indictment. Specifically, at his allocu *131 tion, when the Court asked McLean how he pleaded to Counts I, II, III, and IV of his indictment, his counsel interjected:
Before the entry of Mr. McLean’s plea, I note that the final sentence in Count I is as follows: Quote, the amount of marijuana involved in this conspiracy exceeds 100 kilograms. With respect to the amount of mаrijuana alleged, the defendant contests the allegation of the Government as to the total quantity. However, he is prepared to plead guilty to Count I with that understanding....
Tr. dated Oct. 4, 1999, at 15. In its response to the District Court’s request that the prosecutor advise McLean of the relevant statutory penalties and sentencing guidelines in his case, the Government acknowledged that the issue of quantity would be resolved by the District Court:
Your Honor, had the defendant — or with the defendant’s conviction оn Count I of the indictment, if the Court finds that the quantity of marijuana involved in the conspiracy exceeded 100 kilograms, then in that event, the defendant would face the penalties set forth in 21 United States Code, Section 841(b)(1)(B).
Id.
at 22. Thus, it is clear that neither defense counsel nor the Government (nor, apparently, the District Court) understood McLean to have pleaded guilty to a crime involving any specific threshold drug quantity,
4
despite the fact that Count I of the indictment charged quantity with respect to the conspiracy. Nevertheless, the District Court — acting over eight months before
Apprendi v. New Jersey,
B. Sentencing Proceedings
The Presentence Investigation Report (“PSR”) prepared by the United States Probation Office and circulated on October 12, 1999, recommended that the District Court hold McLean accountable for the distribution of 147.65 kilograms of marijuana and, thus, calculate his base offense level to be 26. The amount recommended by the Probation Office included the following: 7.057 kilograms seized from McLean at the time of his arrest on November 19, 1998; an estimated 108.64 kilograms based on the testimony of co-operating witness Michael DeLuca, who claimed to have received twenty pounds of marijuana monthly from McLean from November 1996 until November 1997; and 31.96 kilograms based on the testimony of Yvel Jean-Baptiste who, after being arrested in April 1998 for receiving a delivery of 7.49 kilograms of marijuana, told *132 authorities that he had received four such shipments from McLean.
The PSR also recommended that McLean be denied a downward sentencing adjustment for acceptance of responsibility. In his interview with a probation officer after his arrest, McLean admitted that he sold DeLuca drugs on five to seven occasions between November and December 1997; however, he denied selling De-Luca the large quantities that DeLuca claimed. McLean also denied having marijuana continuously delivered to Jean-Baptiste’s house, although he conceded that he was culpable for a single delivery to that location in April 1998. The probation officer concluded that “defendant has not admitted all the conduct that comprises the offenses of conviction and has denied additional relevant conduct for which he is accountable.”
In March 2000, the District Court held a pre-sentencing hearing on the issue of relevant conduct,
see generally United States v. Fatico,
As an exhibit at the relevant conduct hearing, the Government also submitted to the District Court the grand jury testimony of Yvel Jean-Baptiste. Before the grand jury, Jean-Baptiste had testified that, beginning around November 1997, McLean used Jean-Baptiste’s apаrtment as an address at which to receive marijuana; that he gave his keys to McLean at least four times so that McLean could use his apartment; and that on April 27, 1998, he (Jean-Baptiste) was arrested when the police found a shipment of marijuana in his apartment, after which he entered into a cooperation agreement with the Government.
At sentencing, the District Court adopted the recommendations of the PSR regarding the quantities of drugs involved in McLean’s crimes, except that the Court only attributed 7.49 kilograms (the amount actually seized) to McLean’s dealings with Jean-Baptiste (as opposed to multiplying that amount by four based on Jean-Baptiste’s testimony that McLean used Jean-Baptiste’s apartment at least four times). The District Court thus held McLean accountable for 123.18 kilograms of marijuana and — based on a Sentencing Guidelines range of 63 to 78 months — sentenced him *133 principally to a term of imprisonment of 63 months.
On appeal, McLean launches a three-pronged attack on his sentence. First, he argues that the District Court erred in relying on DeLuca’s testimony and, thus, in holding him responsible for more than 100 kilograms of marijuana. Second, he claims that the District Court erred in refusing to grant him a downward sentencing adjustment for acceptance of responsibility. Finally, he contends that his sentence is contrary to the teachings of Apprendi We examine each of McLean’s arguments in turn.
II. Discussion
A. Findings Regarding Drug Quantity
As long as the sentence imposed is not greater than the maximum penalty authorized by statute for the offense charged and (in cases involving a' guilty plea) allocuted to by the defendant, a district court may consider drug quantity in determining a defendant’s relevant conduct for sentencing purposes pursuant to U.S.S.G. § lB1.3(a), even if drug quantity has not been charged in the indictment as an element of the offense.
See United States v. Thomas,
In this case, the District Court’s calculation of drug quantity was not clearly erroneоus. The Court based its estimation of the amount of marijuana for which McLean was responsible on the amount of marijuana seized upon McLean’s arrest, the amount of marijuana seized at Jean-Baptiste’s apartment, and the testimony of DeLuca. Although McLean correctly points out that DeLuca’s testimony was uncorroborated and that DeLuca was an admitted drug dealer eager to please the Government, these matters bear on DeLu-ca’s credibility, which the District Court was free to determine for itself.
See id.
We give a district court’s findings as to the credibility of witnesses “strong deference,”
see United States v. John Doe #1,
B. Findings Regarding Acceptance of Responsibility
Under the Sentencing Guidelines, a defendant qualifies for a two-level reduction in his Offense Level if he “clearly demonstrates acceptance of responsibility for his offense.” U.S.S.G. § 3El.l(a) (1998). “The sentencing judge is in a unique position to evaluate a defendants’s acceptance of responsibility. For this reason, the determination of the sentencing judge is entitled to great deference on
*134
review,”
id.
application note 5, and will “not be disturbed unless it is without foundation,”
United States v. Defeo,
In the instant case, McLean admitted responsibility for selling marijuana to DeLuca on five to seven occasions between November and December 1997. He insisted, however, that each sale consisted of, at most, one to two pounds of drugs. McLean also admitted responsibility for the single shipment of marijuana to Jean-Baptiste for which the District Court ultimately held him responsible. In light of the District Court’s findings concerning drug quantity (findings that are not clearly erroneous, see Part II.A, ante), however, the Court’s determination that McLean had not clearly demonstrated acceptance of responsibility for his offense was not “without foundation” and, accordingly, should not be disturbed.
United States v. Oliveras,
C. McLean’s Apprendi claim
We recently held, following the teachings of
Apprendi
that drug quantity is an element of an offense charged under 21 U.S.C. § 841.
United States v. Thomas,
In this ease, McLean admitted at his plea proceeding that he (1) conspired to possess with intent to distribute and to actually distribute marijuana, and (2) possessed with intent to distribute and actually distributed marijuana on three separate occasions. He affirmatively denied, however, that the quantity of marijuana involved in these offenses exceeded 100 kilograms. Accordingly, the only crimes for which the District Court could have accepted McLean’s plea were the lesser-included offenses of conspiracy to possess with intent to distribute and to distribute *135 an unspecified quantity of marijuana and possession with intent to distribute and distributing an unspecified quantity of marijuana. Pursuant to 21 U.S.C. § 841(b)(1)(D), see note 8, ante, the maximum term of imprisonment for each of these offenses is 60 months. 5
The District Court sentenced McLean to a term of imprisonment of 68 months — three more than the applicable statutory maximum — on each count, to be served concurrently, based on its own findings that McLean’s offenses involved over 100 kilograms of marijuana. McLean now claims that his sentence violates the teachings of
Apprendi.
Because he did not object to his sentence on these grounds before the District Court, we review his claim for plain error pursuant to Rule 52(b) of the Federal Rules of Criminal Procedure.
See Thomas,
To obtain relief pursuant to Rule 52(b), McLean must show (1) error, (2) that is plain, and (3) that affects his substantial rights.
Id.
at 667;
United States v. Olano,
The Government concedes — as it must,
see Thomas,
An error affects substantial rights if “it is ‘prejudicial’ and it ‘affected the outcome of the district court proceedings.’ ”
Thomas,
Section 5G1.2(d) of the Guidelines provides that, in imposing a sentence in a case involving multiple counts of conviction,
[i]f the sentence imposed on the count carrying the highest statutory maximum is less than the total punishment [arrived at through application of the Guidelines], then the sentence imposed on one or more of the other counts shall run consecutively, but only to the extent necessary to produce a combined sentence equal to the total punishment. In all other respects, sentences on all counts shall run concurrently, except to the extent otherwise required by law.
In other words, “[i]n the case of multiple counts of conviction, [section 5G1.2(d) of] the sentencing guidelines instructs] that if the total punishment mandated by the guidelines exceeds the statutory maximum of the most serious offense of conviction, the district court
must
impose consecutive terms of imprisonment to the extent necessary to achieve the total punishment.”
United States v. Angle,
In this case, McLean pleaded guilty to four offenses, each with a statutory maximum term of imprisonment of 60 months. The District Court determined that the appropriate sentence under the Guidelines was 63 months. Because 63 months exceeds the 60-month statutory maximum, a 63-month sentence could not be imposed on any of the four counts. In such circumstances, the Guidelines require that the total punishment, up to the statutory maximum, be imposed on each count, U.S.S.G. § 5G1.2(b), and that the sentence imposed on one or more of the other counts run consecutively “but only to the extent necessary to produce a combinеd sentence equal to the total punishment,”
id.
§ 5G1.2(d). Thus, for example, the 63 months of total punishment could have been accomplished by imposing sentences of 60 months on all four counts, running three of these sentences concurrently, and running three months of the sentence on the fourth count consecutively to the sentences on the other three counts.
See United States v. McLeod,
We hold that, under the circumstances presented here, the Government has met its burden of demonstrating that the plain error did not affect McLean’s substantial rights.
7
In so holding, we join every other circuit that has considered whether an
Apprendi
error affects a defendant’s substantial rights where, in the absence of the error, the application of section 5G1.2(d) of the Guidelines would have resulted in the same term of imprisonment.
See Angle,
III. Conclusion
In sum, we hold that:
(1) As long as the sentence imposed is not grеater than the maximum penalty authorized by statute for the offense charged and (in cases involving a guilty plea) allocuted to by the defendant, a district court may consider drug quantity in determining a defendant’s relevant conduct for sentencing purposes pursuant to U.S.S.G. § lB1.3(a), even if drug quantity has not been charged in the indictment as an element of the offense;
(2) The District Court’s findings with respect to the quantity of marijuana involved in the conspiracy of which McLean was a member were not clearly erroneous;
(3) The District Court’s determination that McLean had not clearly demonstrated acceptance of responsibility for his offense was not “without foundation” and, therefore, will not be disturbed; and
(4) Although the District Court committed plain error in sentencing McLean to a 63 month term of imprisonment for each of his four offenses of conviction to be served concurrently, the plain error did not affect McLean’s substantial rights because, absent the error, the applicatiоn of section 5G1.2(d) of the Sentencing Guidelines would have re-suited in an identical total term of imprisonment.
*138 Accordingly, we affirm the judgment of the District Court.
Notes
. Title 21, Section 846 of the United States Code provides: "Any person who attempts or conspires to commit any offense defined in this subchapter shall be subject to the same penalties as those prescribed for the offense, *130 the commission of which was the object of the attempt or conspiracy.”
. Title 21, Section 841(a)(1) of the United States Code provides, in relevant part: “Except as authorized by this subchapter, it shall be unlawful for any person knowingly or intentionally ... to manufacture, distribute, or dispense, or possess with intent to manufacture, distribute, or dispense, a controlled substance.”
. Title 21, Section 841(b)(1)(D) of the United States Code provides, in relevant part: "Except as otherwise provided in section 859, 860, or 861 of this title, any person who violates subsection (a) of this section shall be sentenced as follows:
In the case of less than 50 kilograms of marihuana, ... such person shall, except as provided in paragraphs (4) and (5) of this subsection, be sentenced to a term of imprisonment of not more than 5 years.... ”
. "Threshold drug quantity” refers to the minimum drug quantity that triggers enhanced penalty provisions pursuant to 21 U.S.C. § 841(b). For example, the unauthorized distribution of an unspecified quantity of marijuana is punishable by the penalties set forth in 21 U.S.C. § 841(b)(1)(D), while the unauthorized distribution of 100 kilograms or more of marijuana is punishable by the penalties set forth in 21 U.S.C. § 841(b)(1)(B). Thus, 100 kilograms of marijuana is a threshold drug quantity triggering thе enhanced penalty provisions of 21 U.S.C. § 841(b)(1)(B).
. In his supplemental brief, McLean cited 21 U.S.C. § 841(b)(1)(D) as the provision providing the statutory maximum in his case. See Appellant’s Supplemental Br. at 3. Accordingly, we have not considered whether 21 U.S.C. § 841(b)(4) provides the relevant statutory maximum where, as here, the indictment does not explicitly charge that the defendant distributed marijuana in exchange for remuneration. In any event, we note that the Government’s proffer at the plea proceeding included a representation that the Government was prepared to prove at trial that on September 4, 1998, McLean received money from a Government informant in exchange for marijuana. Tr. dated Oct. 4, 1999, at 18.
. In
Thomas,
the Government suggested that our "modified plain error” standard is inconsistent with (and, thus, was implicitly overruled by) the Supreme Court’s decision in
Salinas v. United States, 522
U.S. 52,
. Our holding here would not preclude reformation of McLean’s sentence on
Apprendi
grounds in the event of a successful collateral attack on some of McLean’s convictions. A court granting a writ pursuant to 28 U.S.C. § 2255 has broad discretion to fashion a remedy appropriate under the circumstances.
See United States v. Gordon,
. The Supreme Court denied
certiorari
with respect to each of the four defendants in
United States v. Page,
