OPINION
Defendants, James Sylvester Milan, Jr. and Sharn Raynard Milan, appeal from the judgments issued by the United States District Court for the Western District of Tennessee, entered on September 11, 2002, and September 24, 2002, respectively, finding Defendants guilty of conspiracy to possess with intent to distribute and distribution of fifty grams or more of a mixture or substance containing cocaine base, in violation of 21 U.S.C. §§ 841(a)(1), 846. For the reasons set forth below, as to Sharn Ray-nard Milan, we VACATE the district court’s judgment and REMAND the case for re-sentencing; and, as to James Sylvester Milan, Jr., we AFFIRM the district court’s judgment.
PROCEDURAL HISTORY
A federal grand jury returned an indictment on July 16, 2001. A superseding indictment was filed on October 15, 2001, charging Defendants with conspiracy tо possess with intent to distribute and distribution of fifty grams or more of a mixture and substance containing cocaine base, in violation of 21 U.S.C. § 841(a)(1) (possession with intent to distribute and distribution) and § 846 (conspiracy).
On October 2, 2001, a plea agreement for Sharn Raynard Milan (“Sharn”) was entered. On October 10, 2001, a plea agreement for James Sylvester Milan, Jr. (“James”) was entered.
On September 11, 2002, judgment was entered, finding James guilty of the conspiracy and sentencing him to a term of 135 months. On September 24, 2002, judgment was entered, finding' Sharn guilty of the conspiracy and sentencing him to a term of 264 months. After entry of judgment, each Defendant filed a timely notice of appeal. On June 24, 2004, pursuant to the government’s motion for a reduction in Sham’s sentence for substantial assistance, see FED. R. CRIM. P. 35(b), the district court reduced Sham’s sentence to 188 months.
FACTS
The Presentence. Investigation Reports of James and Sham offer identical accounts of the substantive facts, stating that a confidential informant (“CS-2”) had indicated
that Sharn Raynard Milan and Stephen Dorrell Milan were major distributors of crack cocaine in Trenton, Tennessee, and that James Sylvester Milan, Jr. and Andre Anderson were selling crack cocaine for them.... CS-2 provided information that led to the introduction of a Drug Task Force undercover agent to members of Sharn Raynard Milan’s organization. During the course of this invеstigation, CS-2 participated in sev-éral controlled purchases of crack cocaine involving Andre Anderson, Sharn Raynard Milan, and James Sylvester Milan, Jr....
(J.A. at 136,179.)
Undercover agents arranged and executed numerous purchases of crack cocaine from Defendants. On August 6, 1999, another confidential informant (“CS-* 1”) arranged a purchase from Sharn of a quantity of crack cocaine that was later measured to be 67.5 grams. , On later dates, CS-2 arranged by phone to pur *448 chase crack cocaine from Anderson; then, CS-2 — equipped with a listening device and accompanied by an undercover agent — went to Anderson’s residence and cоmpleted these purchases of crack cocaine.
On September 20, 2000, .with an agent listening to the call, CS-2 arranged by phone to purchase crack cocaine “from Sharn Raynard Milan through James Sylvester Milan, Jr.” (J.A. at 137, 181.) Then, Agent Eric Holmes and “CS-2 entered James Sylvester Milan, Jr.’s residence ... and in their own vehicle subsequently followed a vehicle driven by James Sylvester Milan, Jr. to the residence of Sharn Ray-nard Milan ... where James Sylvester Milan, Jr. entered the vehicle driven by Agent Holmes and OS-2.” (J.A. at 137, 181.) CS-2 and Agent Holmes purchased from James a quantity of crack cocaine that was later measured to be 22.4 grams.
On September 25, 2000, at Sham’s residence, undercover agents purchased from James a quantity of crack cocaine that was later ■ measured to be 71.0 grams; during the purchase, “James Sylvester Milan, Jr. went into the residence and Sharn Ray-nard Milan came outside and looked at the agent.” (J.A. at 137, 181.) On October 4, 2000, an undercover agent purchased a quantity of crack cocaine that, was .later measured to be 70.7 grams from James at Sham’s residence; during the purchase, “[t]he undercover agent observed James Sylvester Milan, Jr. walk over to Sharn Raynard Milan and receive a package from him”-the package contained the crack cocaine. (J.A. at 138, 182.) In the course of thesе arrangements, an incident occurred in which James came uninvited to CS-2’s residence and' accused CS-2 of being a federal agent; CS-2 believed that James had a firearm in his pocket, due to James’s gestures.
On July 16, 2001, a federal grand jury indicted Sharn and James. A superseding indictment was filed on October 15, 2001, charging Defendants with conspiracy to possess with intent to distribute and distribution of fifty grams or more of a mixture and substance containing cocaine base, in violation of 21 U.S.C. § 841(a)(1) (possession with intent to distribute and distribution) and § 846 (conspiracy). On October 2, 2001 and October 10, 2001, respectively, Sharn and James pled guilty.
On September 6, 2001, Sharn gave a proffer statement to agents, admitting to hаving sold cocaine on various occasions. On September 19, 2001, James gave a proffer statement to agents, stating, inter alia, that. Sharn was his first cousin and describing both his own role and Sham’s role in crack cocaine distribution.
DISCUSSION
Defendants initially raised four arguments in this case.. Sharn argued, first, that his rights under U.S. SENTENCING GUIDELINES MANUAL (“U.S.S.G.”) § IB 1.8 were violated when his sentence was calculated based on drug amounts referred to in his proffer statements and those of his co-defendants; second, that the offense level was improperly increased for possession of a firearm during the offense, pursuant to U.S.S.G. § 2D1.1; and, third, that the offense level was improperly increased for a leadership or organizer role, pursuant to U.S.S.G. § 3Bl.l(a). Finally, James argued that the district court erred in using the proffer statements of his co-defendants to calculate his offense level, in violation of U.S.S.G. § 1B1.8.
However, on June 24, 2004, after briefs were filed in this appeal, the Supreme Court issued its decision in
Blakely v. Washington,
542 U.S.-,
We turn now to the Sixth Amendment claims of each defendant.
I.
Sharn pled guilty to conspiracy to possess with intent to distribute and distribution of fifty grams or more of a mixture or substaneé containing cocaine base. Sharn made no further factual admissions beyond those implicit in his guilty plea. At Sham’s September 24, 2002 sentencing hearing, the district court determined that the base offense level was 38 because the Presentence Investigation Report (“PIR”) attributed at least 1.5 kilograms of crack cocaine to Sharn. See U.S.S.G. § 2Dl.l(c)(l). Next, the court applied a 2-level enhancement under § 2D1.1(b)(1) on the strength of the government’s allegation that Sharn possessed a firearm during the commission of the offense to which he pled. The court then applied a 4-level enhancement under § 3Bl.l(a) because it found that Sharn “was an organizer or leader of a criminal activity that involved five or more participants or was otherwise extensive.” Id. The court then proceedеd to reduce Sham’s offense level — which then stood at 44 — as follows: First, the court applied a 3-level reduction for acceptance of responsibility. Second, the court granted the government’s motion under § 5K1 and applied a further 4-level reduction, agreeing with the government that Sham had provided substantial assistance. When all modifications were complete, Sharn had an offense level of 37 and a criminal history category of II, which warranted a sentence between 235 and 293 months under the guidelines. Thus, on September 24, 2002, the court sentenced Sham to 264 months, the sentence he now appeals.
However, after the parties. filеd their briefs in this appeal, the district *450 court further reduced Sharn’s sentence. At some point during the spring of 2004, the government filed a motion with the district court for a reduction of Sharn’s sentence on the grounds of substantial assistance. See FED. R. CRIM. P. 35(b). On June 24, 2004, the court granted the motion, reduced Sharn’s offense level from 37 to 34, and sentenced Sharn to 188 months. Some three weeks later, on July-15, 2004, Sharn submitted a supplemental brief urging us to remand for re-sentencing on all of the claims he raises in light of the Supreme Court’s decision in Blakely v. Washington. Shárn did not apprise us of the June 24, 2004 reduction in his sentence, but the government, not surprisingly, did so in its reply brief. However, despite the government’s suggestion to the contrary, and in light of the Supreme Court’s decision in United States v. Booker, we conclude that Sharn does have standing to challenge his sentence on Sixth Amendment grounds.
We reach this conclusion because Sharn’s sentence — even at its current reduced level of 188 months — is not authorized by the facts to which he admitted. And as the Court held in
Booker:
“Any fact (other than a prior conviction) which is necessary to support a sentence exceeding the maximum authorized by the facts established by a plea of guilty or a jury verdict must be admitted by the defendant or proved to a jury beyond a reasonable doubt.”
Booker,
-— U.S. at -,
Initially, we explain why plain error review is warranted. In
Booker,
the Supreme Court made clear that its holdings in the case may have implications for many cases presently on review in the courts of appeal: “As these dispositions indicate, we must apply today’s holdings ... to all cases on direct review.”
Booker,
— U.S. at-,
The Supreme Court’s endorsement • of plain error review in
Booker
is also consistent with Rule 52(b) of the Federal Rules of Criminal Procedure which provides that “[a] plain error that affects substantial rights may be considered even though it was not brought to the court’s attention.” FED. R. CRIM. P. 52(b). Thus we think it appropriate to apply plain error review in this instance,
see also United States v. Ameline,
Under the plain error test, “before an appellate court can correct an error not raised at trial, there must be (1) ‘error,’ (2) that is ‘plain,’ and (3) that ‘affect[s] substantial rights.’ ”
Johnson v. United States,
We do not find it difficult to conclude that Sham’s sentence was the result of plain error. To address the first two requirements of plain error review, we note that where, as is the case here, “the law at 'the time of trial was settled and clearly contrary to the law at the time of appeal[,] it is enough that an error be ‘plain’ at the time of appellate consideration
...Johnson,
Finally, we further conclude that it is proper fоr us to consider the merits of Sham’s admittedly forfeited claim' because, under
Booker,
sentencing a defendant on the basis of judicial fact-finding is an error that “seriously affect[s] the fairness, integrity or public reputation of judicial proceedings.”
Johnson,
Accordingly, we hold that the district court committed plain error when it sentenced Sharn to 188 months of imprisonment. By pleading guilty, Sharn admitted involvement with no more than 50 grams of cocaine base, which supports a base offense level of 32. Furthermore, Sharn did not admit he possessed a firearm or was an organizer of a criminal activity. With his criminal history category of II, therefore, the maximum lawful sentence under Booker is 168 months. See U.S.S.G. SENTENCING TABLE. Consequently, we remand Sham’s case for re-sentencing in light of Booker.
In addition, we note that our plain error analysis is in step with the recently-filed decision of our Court in
United States v. Oliver,
In our judgment, a critical aspect of
Booker
has escaped the Eleventh and Second Circuits’ thinking on these matters— namely, that the Supreme Court remanded Booker’s case for resentencing. It is certainly our obligation as courts of appeal to carefully consider what the Supreme Court said in
Booker.
Nevertheless, we cannot ignore what the Court,
did.
At the very least, a remand for resentencing of Booker must rest on a decision that the error in his case was reversible, i.e., was not harmless ' and affected Booker’s substantial rights.
See
FED. R. CRIM. P. 52(a) (“Any error ... that does not affect substantial rights must be disregarded.”). In fact, as our colleagues observed in
Oliver,
we can safely conclude that, in the ordinary case, a Boo/cer-type Sixth Amendment violation affects substantial rights.
See Oliver,
Still, it would be improper for us to assume that Booker’s sentence was plain error because the Court did not say that it was. -Instead, the Court simply remanded Booker’s case for resentencing, having found that his sentence violated the Sixth Amendment. As we indicate
supra,
this amounts — at the very least — to a holding that sentencing Booker in a manner that violаted the Sixth Amendment affected his substantial rights. It is hard to see how the Eleventh Circuit’s decision in
Rodriguez
is consistent with this result. In
Rodriguez,
the court centered its plain error analysis on whether the defendant, whose sentence violated the Sixth Amendment, could show that the constitutional violation prejudiced him.
See Rodriguez,
n.
James also submitted a supplemental brief to the effect that his sentence is inconsistent with the Sixth Amendment. However, James did not receive a sentence in excess of the maximum sentence authorized by the facts he admitted in his guilty plea. James received a sentence of 135 months of imprisonment. Because he pled guilty to conspiracy to possess with intent to distribute and distribution of at least 50 grams of a mixture or substance containing cocaine base, James’s base offense level was 32.
6
See
U.S.S.G. § 2Dl.1(c)(4).
*455
With his criminal history category of III, the maximum sentence allowable under
Booker
— i.e., undеr thé facts James admitted — would be 188 months.
See
U.S.S.G. SENTENCING TABLE; see
also Booker,
— U.S. at-,
III.
We now consider the argument of both defendants that the district court violated U.S.S.G. § 1B1.8 in calculating their base offense levels. We held
supra
that Sham’s case must be remanded for re-sentencing in light of
Booker
because he did not admit to involvement with 1.5 kilograms of cocaine base, nor to possessing a firearm, nor to being an organizer of a criminal activity. In contrast, we held that, under
Booker,
James’s sentence is consistent- with the Sixth Amendment. These holdings do not dispose of the case. We must still address both defendants’ claims that the court violated § 1B1.8 of the Guidelines in determining the amount of cocaine base attributable to them. Section IB 1.8 of the Guidelines prohibits use of a defendant’s proffer statements in determining his sentencing range.
See
U.S.S.G. §■ 1B1.8. In
Booker,
the Supreme Court rendered the Sentencing Guidelines non-mandatory.
See Booker,
— U.S. at -,
Our view that § IB 1.8 remains binding on the district courts after Booker has implications for both defendants in this case. As to Sharn, when the district court determines his sentence anew, it will no longer be constrained by the sentencing ranges prescribed . by the Guidelines. Nevertheless, the court must sentence Sharn to a term within the statutory minimum and maximum, see 21 U.S.C. § 841(b)(1)(A), and, under
Booker,
the sentence on the whole must be reasonable.
See Booker,
— U.S. at----,
As to James, we explained supra at Part II of this opinion that we need not remand James’s sentence on Sixth Amendment grounds.- However, if we find that the district court violated § IB 1.8 by considering James’s proffer statements, this error, unless it was harmless, would warrant a remand even after Booker because § IB 1.8 remains binding on the district courts and, in any event, a sentence based on facts found through a violаtion of § IB 1.8 would be unreasonable. We now review the evidence considered by the district court as to each defendant and conclude that the court did not violate § 1B1.8 in either case.
In Sham’s case, the government recommended an offense level of 38 in the Presentence Investigation Report (“PIR”), based on an attribution of at least 1.5 kilograms of “crack” cocaine to him. See U.S.S.G. § 2Dl.l(c)(l). This quantity was supported through sources that were independent of Sham’s proffer statement. The PIR stated, “In the absence of Sharn Raynard Milan’s self-incriminating statement during the presentence interview, the presentence writer would have attributed 241 ounces of crack cocaine (6,832,25 grams of crack) to Sharn Raynard Milan based on the proffer statements of Andre Anderson.” (J.A. at 140). See also (J.A. at 142) (1,240.3125 grams, based on the proffer statements of Santayan Deon May-berry); (J.A. at 145) (783.5 grams, based on the proffer statements of Stephen Dor- *457 rell Milan). Sharn did not object to the PIR. James, however, did object to the PIR’s use of the proffer statements of co-Defendants Sharn and Santayan Mayberry regarding the amount of cocaine attributable to him; the co-defendants’ statements were similar in substance tó the statements in James’s proffer. At the sentencing hearing, James’s counsel reiterated the objection. The district court denied the objection. The district court stated that the cooperation agreement “make[s] clear that if the only basis of the government’s knowledge is what [James] told them, they can’t use it against him. If the government had that information from somewhere else, then it is usable against [James].” (J.A. at 103.)
As to both James and Sharn, this statement of the law was correct. The court was permitted to use co-Defendants’ proffer statements in calculating Defendants’ drug amounts, so long as the court did’ not use one defendant’s proffer statement against that defendant.
See United States v. Baird,
Accordingly, we conclude that the district court did not violate § 1B1.8 when it considered the information provided in co-Defendants’ proffer statements in sentencing Sharn and James. On remand for re-sentencing of Sharn, then, the district court is free to consider these statements without running afoul of § IB 1.8 so long as it issues a sentence that is reasonable under Booker and is within the statutory range prescribed by 21 U.S.C. § 841(b)(1)(A). Finally, to the extent James additionally challenges the reliability of his co-defendants’ proffer statements, we conclude that the district court’s reliance on these statements was not unreasonable because it is not obvious that the statements were untruthful. Accordingly, because James’s sentence is consistent with the Sixth Amendment and with § 1B1.8 of the Guidelines, we affirm his sentence.
CONCLUSION
For the foregoing reasons,' asp to Sharn Raynard Milan, we VACATE the judgmеnt of the district court and REMAND for re-sentencing in light of Booker. As to James Sylvester Milan, Jr., we AFFIRM the judgment of the district court.
Notes
. In this case the maximum penalty under the statute is life in prison. See 21 U.S.C. § 841(b)(1)(A)(iii).
. Both Sham and James timely brought their Sixth Amendment claims to the Court's attention by way of filing supplemental letter briefs pursuant to FED. R. APP. P. 28(j) after the Supreme Court issued its decision in Blakely. Rule 28(j) permits parties to submit such letters even after oral argument, as Defendants did in this case. See R. 28(j).
. One day "after the panel iri
Oliver
filed its opinion, a different panel of this Court filed its opinion in
United States v. Bruce,
. We do not understand plain error review to depend on whether the appellee raises the appellant's forfeiture of an argument.
. For the reasons stated in this opinion, we cаnnot imagine how the Court's analysis in Booker would have been altered if the Court had additionally considered the fourth prong of the plain error test, i.e., whether the error seriously affected the fairness, integrity, or public reputation of judicial proceedings.
.On the basis of the co-defendants' proffer statements — which attributed more than 500 grams of cocaine base to James — the district court assigned James a base offense level of 36. The district court also enhanced James’s offense level by two levels for possession of a firearm and then reduced it by three for ac *455 ceptance of responsibility. The record provided to us on аppeal does not disclose how James secured a sentence of 135. months when his final offense level was 35 and his criminal history category was III. See U.S.S.G. SENTENCING TABLE (providing a sentencing range of 210-262 months for offenders with those characteristics). In any event, as our discussion makes clear, his sentence is clearly authorized by the facts he admitted and therefore does not contravene the Sixth Amendment as interpreted in Booker.
. There may be federal criminal defendants whose cases were on direct review at the time the Supreme Court issued Booker who are entitled to remand even though their sentences are consistent with the Sixth Amendment. For example, after Booker a defendant might appeal the denial of a downward departure on the grounds that since Booker rendered the guidelines advisory, it was plain error to view them as mandatory and deny a departure. This is not such a case. James asserts only that his sentence is plain error because it violates the Sixth Amendment and, as our discussion makes clear, it does not.
. U.S.S.G. § 1B1.8 states, in full:
(a) Where a defendant agrees to cooperate with the government by providing information concerning unlawful activities of others, and as part of that cooperation agreement the government agrees that self-incriminating information provided pursuant to the agreement will not be usеd against the defendant, then such information shall not be used in determining the applicable guideline range, except to the extent provided in the agreement.
(b) The provisions of subsection (a) shall not be applied to restrict the use of information:
(1) known to the government prior to entering into the cooperation agreement;
(2) concerning the existence of prior convictions and sentences in determining § 4A1.1 (Criminal History Category) and § 4B1.1 (Career Offender);
*456 (3) in a prosecution for perjury or giving a false statement; .
(4) in the event there is a breach of the cooperation agreement by the defendant; or :
is) in determining whether, or to what extent, a downward departure from the guidelines is warranted pursuant to a government motion under § 5K1.1 (Substantial Assistance to Authorities).
