The mandatory minimum sentence for distribution of a controlled substance ordinarily doubles if the accused has a prior felony drug conviction. See 21 U.S.C. § 841. But this enhancement accrues only if the government elects to pursue it. In that event, the government must file, within a specified time frame, an information signaling its intention and identifying the previous conviction(s) on which it relies. See id. § 851(a)(1).
In this appeal, petitioner-appellant Stanley Prou challenges an enhanced sentence imposed on the basis of a concededly un *41 timely filing. He shrugs off the fact that the issue was not raised on direct appeal, claiming that the usual rules of procedural default do not apply. Although this claim derives support from decisions of two sister circuits, we reject it. As a fallback, Prou asserts that he has shown cause and prejudice sufficient to excuse his procedural default. We agree with this assertion. Consequently, we reverse the order dismissing Prou’s section 2255 petition, vacate the enhanced sentence, and remand for resentencing.
I
The relevant facts are essentially undisputed. On April 6, 1995, a federal grand jury indicted the petitioner for conspiring to distribute (or to possess with intent to distribute) cocaine, aiding and abetting such conduct, and carrying a firearm in relation to a drug-trafficking crime. See 21 U.S.C. §§ 841, 846; 18 U.S.C. §§ 2, 924(c). On June 13, the United States Attorney filed a so-called “Rule 404(b) notice” disclosing the government’s intention to introduce evidence of the petitioner’s 1993 state court conviction for possession of marijuana with intent to distribute. 1 A jury was empaneled (but not sworn) on June 22. Nineteen days later, the government filed the crucial section 851(a)(1) information, again referencing the 1993 conviction. The court (Pettine, J.) administered the jury oath on August 21. Trial proceeded and the jurors found the petitioner guilty on all counts.
The petitioner’s court-appointed attorney raised several objections to the pre-sentence investigation report, including a claim that the petitioner’s 1993 state conviction was insufficient to trigger the statutory enhancement because it was for a misdemeanor, not a felony. Counsel did not succeed in scuttling the enhancement, but he did convince Judge Pettine to pare the drug quantity and eliminate the double-counting of a probation violation. These successes had the effect of shrinking the guideline sentencing range for the drug-trafficking counts from 168-210 months to 78-97 months. Basing the sentence on one kilogram of cocaine instead of five also reduced the mandatory minimum sentence from ten years to five. Compare 21 U.S.C. § 841(b)(1)(A) with id. § 841(b)(1)(B). Nevertheless, defense counsel did not question the timeliness of the section 851(a)(1) information, and the ensuing enhancement boosted the petitioner’s sentence to ten years. In addition, Judge Pettine imposed a five-year consecutive sentence on the firearms count.
The petitioner unsuccessfully pursued a direct appeal,
see
The government filed 21 U.S.C. § 851 late, that section requires filing before jury selection begins. Which would allow the petitioner ample time to determine whether he should enter a plea or go to trial, and to plan his trial strategy with full knowledge of the consequence of a potential guilty verdict. See ... Arnold v. United States,443 A.2d 1318 , 1326 (D.C.1982); (information not timely *42 filed after jury selection process had begun.)....
He then attempted to demonstrate “cause” and “prejudice.”
Judge Pettine had retired, and the section 2255 motion came before Chief Judge Lagueux, who denied it summarily (without a hearing and without specifically addressing the petitioner’s section 851(a)(1) claim). Judge Lagueux thereafter refused to issue a certificate of appealability (COA). See 28 U.S.C. § 2258. On subsequent application, we granted a COA limited to the following question: “Whether the district court was without jurisdiction to impose an enhanced sentence when the information required by 21 U.S.C. § 851 to be filed ‘before trial’ was filed after the jury was impaneled?” We simultaneously appointed counsel for the petitioner and indicated specific areas to be addressed in subsequent briefing.
II
We quickly parry a preliminary thrust. The government declares that the petitioner failed adequately to raise the timeliness of the section 851(a)(1) information in his pro se motion for relief under section 2255. We think not.
In his motion, the petitioner specifically mentioned ineffective assistance of counsel resulting from an asserted failure to object to the untimeliness of the informational filing. While the petitioner made this allegation pithily, its gist was clear and distinct. The petitioner then reiterated the point in his reply memorandum, citing relevant authority. We conclude that further elaboration was unnecessary. The petitioner’s submissions sufficiently charged the court and the government with notice of the claim, especially since the described error virtually jumps off the face of the docket. It would be unreasonable to require more from a pro se prisoner.
See Lema v. United States,
Ill
The petitioner posits that the absence of a timeous section 851(a)(1) information deprived the sentencing court of jurisdiction to impose the enhanced sentence. Because jurisdictional failings are immune from normal rules of waiver and procedural default,
2
his reasoning goes, the district court had an obligation to consider the claim on collateral review despite his failure to raise it either before sentencing or on direct appeal. The government resists this syllogism. It urges us to draw a distinction between nonwaivable issues of subject-matter jurisdiction and waivable issues of statutory authorization, and to locate section 851(a)(1) in the latter category — a placement which, under
United States v. Frady,
A
We do not write on an empty slate. In
Hardy v. United States,
The government contends that
Suveges
represents binding circuit precedent and thus forecloses us from reaching the section 851(a)(1) issue in the absence of cause and prejudice. But
Suveges
at one point described section 851(a)(l)’s strictures as “jurisdictional,”
B
Prior to 1970, a federal statute required the United States Attorney, in a drug case, to advise the court after conviction but before sentencing whether the defendant was a recidivist and therefore subject to a. mandatory enhanced sentence.
See
26 U.S.C. § 7237(c)(2) (1964). Under this provision, we upheld an enhanced sentence when the government filed the information after sentencing but the defendant nonetheless admitted the existence of the prior conviction.
See King v. United States,
The Comprehensive Drug Abuse Prevention and Control Act of 1970 (the Act), 21 U.S.C. §§ 801-971, repealed this system, substituting the present protocol:
No person who stands convicted of an offense under this part shall be sentenced to increased punishment by reason of one or more prior convictions, unless before trial, or before entry of a plea of guilty, the United States attorney files an information with the court (and serves a copy of such information on the person or counsel for the person) stating in writing the previous convictions to be relied upon. Upon a showing by the United States attorney that facts regarding prior convictions could not with due diligence be obtained prior to trial or before entry of a plea of guilty, the court may postpone the trial or the taking of the plea of guilty for a reasonable period for the purpose of obtaining such facts.
21 U.S.C. § 851(a)(1).
The proscriptive language of the section (“No person ... shall be sentenced to increased punishment ... unless ... ”) and the specific provision for postponement
*44
leave no doubt that the procedural requirements of section 851(a)(1) are to be strictly enforced.
3
See United States v. Belanger,
Sometimes courts have described the new scheme’s procedural requirements as “jurisdictional.”
See, e.g., Romero-Carrion,
“Jurisdiction” is a word of many, too many, meanings. We prefer to put the matter in different terms. A prosecutor’s compliance with § 851(a)(1) is simply a necessary condition to a judge’s imposing an enhanced sentence on the basis of a defendant’s prior convictions.
United States v. Vanness,
Without exception, the cases discussed above that have called the procedural requirements of section 851(a)(1) “jurisdictional” arose on direct appeal and nothing turned on the choice of phrase. The stakes are quite different when the issue of timeliness surfaces for the first time in a collateral proceeding. Thus, the classification of section 851(a)(l)’s timeliness requirement as jurisdictional proved all-important in
Harris
and
Kelly;
in each of those cases, the court permitted a habeas petitioner to advance a newly-emergent section 851(a)(1) claim on collateral review without any showing of cause or prejudice, espousing the theory that jurisdictional issues cannot be waived or forfeited.
4
See Harris,
*45
The petitioner invites us to join these courts. With respect, we decline the invitation. Whether or not the prosecution files a timely section 851(a)(1) information, a federal district court plainly possesses subject-matter jurisdiction over drug cases.
See
18 U.S.C. § 3231 (conferring original jurisdiction “of all offenses against the laws of the United States”). This jurisdiction necessarily includes the imposition of criminal penalties. Once subject-matter jurisdiction has properly attached, courts may exceed their authority or otherwise err without loss of jurisdiction.
See United States v. Wey,
Judge Learned Hand once wrote that words can be “chameleons, which reflect the color of their environment.”
Commissioner v. National Carbide Corp.,
Another example, of particular pertinence here, arises out of the unfortunate penchant of judges and legislators to use the term “jurisdiction” to describe the technically distinct notion of a court’s authority to issue a specific type of remedy in a case in which the threshold requirements of subject-matter and personal jurisdiction are not open to question.
See Steel Co. v. Citizens for a Better Env’t,
We believe that courts historically have used the word “jurisdictional” in much the same way to describe the operation of section 851(a)(1). The imposition of a sentence is the criminal-law analogue to the granting of a remedy in a civil action — and neither implicates subject-matter jurisdiction. Accordingly, we hold that noncompliance with the procedural regime established by section 851(a)(1) deprives the sentencing court of authority to impose an enhanced sentence — no more and no less. Here, then, the lower court was empowered to render a binding judgment concerning a federal crime, and the fact that the judgment actually entered embodied a sentence that surpassed the level authorized by Congress did not divest the court of jurisdiction over the subject matter.
C
Seen in this light, the operative question reduces to whether section 851(a)(1) is nonwaivable notwithstanding its lack of impact on subject-matter jurisdiction. Citing the mandatory language of the statute, the petitioner hypothesizes that an enhancement based on an untimely filing, like a judicial decree rendered in the absence of subject-matter jurisdiction, is null and void. We reject this hypothesis.
That section 851(a)(1) is phrased in obligatory terms cannot be determinative of a waiver inquiry. If it were, a whole range of constitutional and statutory provisions employing compulsory language would give rise to nonwaivable claims. The case law belies so sweeping a generalization. For instance, statutes of limitations often speak in mandatory terms,
see, e.g.,
18 U.S.C. § 3282 (providing that “no person shall be prosecuted, tried, or punished” after a specified period of time), yet defenses premised on the government’s failure to satisfy statutes of limitations can be waived,
see, e.g., United States v. Spector,
On this point, we regard
United States v. Baucum,
As a last gasp, the petitioner remarks the discretion inherent in section 851(a)(1). Because the statute vests this discretion in the Executive Branch, he asseverates, permitting an enhancement based on an unpunctual filing would offend separation-of-powers tenets. This asseveration lacks force.
*47
Although section 851(a)(1) empowers the Executive Branch either to seek or to abjure an enhanced sentence, the statute’s pretrial filing. and service requirements serve an entirely different purpose: they afford the accused adequate time to make a fully informed decision whether to plead or stand trial.
See Johnson,
Nor do we discern any inequity in applying the customary rules of waiver and procedural default in section 851(a)(1) eases. In general, waiver and procedural default rules serve the public interest in the finality of criminal judgments.
See Frady,
To say more on this point would be supererogatory. Upon reexamination, we reaffirm our holding in
Suveges:
a defendant’s failure to object at sentencing and/or on direct appeal to the untimeliness of the government’s section 851(a)(1) information constitutes a procedural default, leaving the issue open to collateral attack only if the defendant can show cause and prejudice.
See Suveges,
IV
On no occasion prior to filing his section 2255 motion did the petitioner object to his enhanced sentence on the ground that the section 851(a)(1) information was untimely. Thus, he must show both “cause” excusing his procedural default and “actual prejudice” resulting from the unpreserved error in order to obtain collateral relief.
Frady,
A
Constitutionally ineffective assistance of counsel constitutes cause sufficient to excuse a procedural default.
See Murray v. Carrier,
In this case, the relevant error is the failure to object to an impuissant filing, resulting in the imposition of a sentence not authorized by law. We start with the usual presumption that counsel was competent.
See Strickland,
Section 851(a)(1) straightforwardly declares that no drug offender shall be exposed to an automatic increase in punishment by reason of a prior conviction unless the government, before trial, files an information with the court identifying the conviction(s) upon which it relies. At the time the petitioner’s case went forward, it was well-settled (as the government concedes) that “trial,” as that term is used in section 851(a)(1), includes jury selection.
See United States v. Rice,
In the ordinary course, the petitioner’s attorney should have called attention to this bevue at or before the disposition hearing. At that point, there was absolutely no downside to taking the government to task for its timing error: jeopardy had attached, the petitioner had been convicted, the guideline sentencing range had been computed and its high point was well below ten years, and a timely information was a sine qua non to the applicability of a ten-year mandatory minimum sentence. In short, the petitioner had much to gain, and nothing to lose, by raising the section 851(a)(1) defect before sentencing (or on direct appeal, for that matter). There was simply no plausible reason not to do so.
We readily concede that not every lawyerly slip constitutes ineffective assistance of counsel for Sixth Amendment purposes.
See Strickland,
In this instance, counsel’s failure to call the court’s attention to the late filing was no mere garden-variety blunder. Where, as here, an attorney fails to raise an important, obvious defense without any imaginable strategic or tactical reason for the omission, his performance falls below the standard of proficient representation that the Constitution demands.
See Cook,
B
We turn next to the matter of prejudice, which in this context means “a
*49
reasonable probability that, but for counsel’s unprofessional errors, the result of the proceeding would have been different.”
Strickland,
Earlier this year, the Court stated that in order to show prejudice sufficient to overcome a procedural default, a habeas petitioner “must convince us that there is a reasonable probability that the result of the trial would have been different” absent the error.
Strickler v. Greene,
— U.S. -, -,
Having constructed the template, the prejudice inquiry need not detain us here. Had the petitioner’s court-appointed attorney called attention to the obvious defect in the government’s section 851(a)(1) information, the district court would not have had recourse to a ten-year mandatory minimum sentence. The subsequent imposition of such a sentence is prejudice, pure and simple.
7
See Kelly,
V
In this case, the government’s section 851(a)(1) filing was late and, prior to jury selection, it furnished neither the petitioner nor the court an equivalent signal of its intent to seek a statutory sentence en *50 hancement. 8 The failure to raise this point constituted substandard performance on counsel’s part, resulting in an incarcerative sentence that not only exceeded the court’s authority but also surpassed the apex of the applicable guideline sentencing range by almost two years.
We need go no further. In light of the foregoing, we reverse the order of dismissal, vacate the sentence previously imposed on the drug-trafficking counts (counts I and II), and remand for resentencing without the statutory enhancement. The petitioner has not contested the five-year consecutive sentence imposed on the firearms count (count III), and that portion of his sentence is not affected by this decision.
Reversed and remanded.
Notes
. The sobriquet derives from an evidence rule, under which evidence of other crimes is barred for the purpose of proving the character of a person or action in conformity therewith, but is admissible for certain other purposes. See Fed.R.Evid. 404(b). If, however, the accused seasonably requests disclosure, the government’s use of such evidence in a criminal case is conditioned upon the giving of reasonable advance notice. See id.
. Technically, this case involves a procedural default, in which a failure seasonably to raise a claim bars subsequent attempts to do so. Waiver, in contrast, represents an express de-cisión by a party not to pursue a claim. Because all waivable claims are by definition subject to procedural default, we use the terms interchangeably.
. Enforcement has been strict, but not rigid. Thus, courts occasionally have excused untimely filings as long as the defendant has been made aware before trial or entry of a guilty plea of both the government’s intent to seek an enhancement and the particular prior conviction(s) upon which the government aspires to rely.
See, e.g., United States
v.
Brown,
. Two other cases also point in this direction. In one, the court considered a section 851(a)(1) claim on direct review despite the defendant’s failure to raise the issue below.
See United States v. Novey,
. 42 U.S.C. § 11046(c) provides in relevant part:
The district court shall have jurisdiction in actions brought under subsection (a) of this *46 section against an owner or operator of a facility to enforce the requirement concerned and to impose any civil penalty provided for violation of that requirement.
. Two of these cases involved situations where, as here, the government attempted to file the section 851(a)(1) information after the court had empaneled the jury but before it administered the oath.
See White,
. The government mistakenly asserts that the Court’s opinion in
Lockhart v. Fretwett,
. This distinguishes the case at hand from
Belanger,
