The Armed Career Criminal Act — § 924(e) statutory framework
The Armed Career Criminal Act, 18 U.S.C. § 924(e), is a sentencing-enhancement statute that imposes a 15-year mandatory minimum (and a maximum of life) on any § 922(g) defendant — most commonly the § 922(g)(1) felon-in-possession defendant — who has three prior convictions for "violent felonies" or "serious drug offenses" committed on occasions different from one another.
- Predicate § 922(g) conviction
- ACCA does not stand alone — it is an enhancement to a conviction under 18 U.S.C. § 922(g). Most ACCA defendants are charged under § 922(g)(1) (felon-in-possession), but the enhancement is available for any § 922(g) subsection: § 922(g)(2) fugitives, § 922(g)(3) unlawful drug users, § 922(g)(4) mental defectives, § 922(g)(5) undocumented aliens, § 922(g)(8) protective-order subjects, § 922(g)(9) DV-misdemeanor convictees. The unenhanced § 922(g) statutory range is zero to 15 years under § 924(a)(8) (raised from 10 years by the Bipartisan Safer Communities Act of 2022). ACCA converts that range to a 15-year mandatory minimum with a maximum of life.
- Three qualifying priors
- The defendant must have three prior convictions for a "violent felony" or a "serious drug offense" — or any combination of the two. Two of three qualifying priors is not enough; ACCA is binary. "Violent felony" is defined at § 924(e)(2)(B) and includes the elements clause (use, attempted use, or threatened use of physical force) and the enumerated-offenses clause (burglary, arson, extortion, use of explosives). "Serious drug offense" is defined at § 924(e)(2)(A) and includes federal drug-trafficking offenses with a 10-year-or-more statutory maximum and state-law analogues meeting the same threshold. The residual clause of the violent-felony definition was struck down in Johnson v. United States, 576 U.S. 591 (2015).
- Committed on different occasions
- The three qualifying priors must have been "committed on occasions different from one another" — 18 U.S.C. § 924(e)(1). The Supreme Court in Wooden v. United States, 595 U.S. 360 (2022), rejected a mechanical timing test and adopted a multi-factor inquiry into the temporal, locational, and circumstantial relationships among the offenses. Burglaries of ten storage units in a single sweep can constitute a single occasion under Wooden. Erlinger v. United States, 602 U.S. 821 (2024), held that the different-occasions determination must be made by a jury beyond a reasonable doubt — not by the sentencing judge by a preponderance — under the Fifth and Sixth Amendments and Apprendi v. New Jersey, 530 U.S. 466 (2000).
- Penalty under § 924(e) — 15-year mandatory minimum
- Conviction with ACCA triggers a mandatory minimum of 15 years and a maximum of life. The Sentencing Guidelines analysis at USSG § 4B1.4 applies in parallel: an ACCA defendant's offense level is set at the greater of (i) the offense level otherwise applicable, (ii) the offense level from § 4B1.1 if the defendant is also a career offender, or (iii) level 33 (or 34 if the firearm was possessed in connection with a crime of violence or controlled-substance offense). The 15-year mandatory floor controls when the Guidelines calculation produces a lower sentence, and a Guidelines variance under 18 U.S.C. § 3553(a) cannot reduce the sentence below 15 years. The only path below the floor is the government's 5K1.1 motion for substantial assistance, combined with 18 U.S.C. § 3553(e).
The structural simplicity of § 924(e) — three qualifying priors, different occasions, 15-year floor — disguises the litigation density underneath. Almost every contested ACCA case turns on the categorical analysis of one or more of the three alleged predicates. Did the Texas burglary under Penal Code § 30.02 qualify as a "violent felony" under the enumerated-offenses clause? Did the Texas aggravated assault under § 22.02 satisfy the elements clause after Borden? Did the Texas robbery under § 29.02 qualify? Did the Texas Health and Safety Code controlled-substance distribution offense qualify as a "serious drug offense" after Brown? Each of these is a discrete, briefable issue, and each gives the defense a path to defeating one of the three predicates and collapsing the 15-year floor.
ACCA is also one of the most heavily litigated enhancements in the federal criminal code on direct appeal and in § 2255 collateral attack. After Johnson invalidated the residual clause in 2015 and Welch made that holding retroactive in 2016, thousands of federal prisoners filed § 2255 motions seeking relief from residual-clause ACCA sentences. After Borden in 2021 narrowed the elements clause to exclude purely reckless offenses, another wave of post-conviction litigation followed. After Wooden in 2022 reframed the different-occasions analysis, and Erlinger in 2024 added the jury-finding requirement, the litigation continues. Defense counsel in any current ACCA case must analyze every alleged predicate under the entire post-Johnson framework, identify which predicates remain viable after the most recent Supreme Court decisions, and preserve every categorical, divisibility, and different-occasions challenge in the trial record for direct review and collateral relief.
The categorical approach — Taylor, Shepard, Descamps, Mathis
The categorical approach of Taylor v. United States, 495 U.S. 575 (1990), governs whether a state-court prior qualifies as an ACCA predicate. Courts look only to the elements of the offense of conviction — not the underlying facts. Shepard, Descamps, and Mathis define the limited circumstances when the record can be consulted at all.
The categorical approach is the foundational methodology of ACCA litigation, and counsel cannot competently defend an ACCA case without a working command of it. The Supreme Court in Taylor v. United States, 495 U.S. 575 (1990), held that whether a state-court prior qualifies as an ACCA "violent felony" depends only on the elements of the offense of conviction — not on what the defendant actually did. The court compares the elements of the state offense to the elements of the generic ACCA-qualifying offense (e.g., generic burglary, which Taylor defined as unlawful entry into a building or other structure with intent to commit a crime). If the state offense's elements necessarily include the generic offense's elements, the prior categorically qualifies. If the state offense is broader than the generic offense — sweeps in conduct that does not fit the generic definition — the prior categorically does not qualify, regardless of what the particular defendant actually did.
The categorical approach has two important corollaries. First, the defendant's actual conduct is irrelevant; only the legal definition of the offense matters. A defendant whose prior burglary involved breaking into a residence and stabbing the homeowner may still defeat ACCA qualification if the state statute, by its terms, sweeps in conduct broader than generic burglary. Second, the analysis is binary — either the prior categorically qualifies or it does not. There is no "close enough" qualification; if the state offense reaches conduct the generic offense does not, the prior fails the test entirely.
Shepard v. United States, 544 U.S. 13 (2005), and Descamps v. United States, 570 U.S. 254 (2013), refine the framework when a state statute is "divisible" — that is, when it lists alternative elements that effectively create separate offenses. For divisible statutes, courts may use the "modified categorical approach": consulting a limited set of judicial records — the charging document, the plea agreement, the plea colloquy, jury instructions, or comparable judicial-record documents — to determine which alternative element the defendant was convicted under. Shepard documents are the only sources permitted; police reports, presentence reports, and witness statements are not.
Mathis v. United States, 579 U.S. 500 (2016), tightened the divisibility analysis significantly. The Court held that the modified categorical approach is available only when a statute is genuinely divisible — listing alternative elements (the disjunctive list creates separate crimes) — not when it merely lists alternative means of committing a single offense (the disjunctive list describes different ways of satisfying a single element). The distinction is a question of state law: courts look to the state's own elements analysis (decisions of the state supreme court, model jury instructions, the structure of the statute) to determine whether the alternatives are elements or means. When the statute lists alternative means, courts must apply the pure categorical approach and cannot consult Shepard documents — even where those documents would clearly establish that the defendant's actual conduct fit the generic offense. Mathis created a powerful tool for defense counsel: many state statutes that historically qualified under the modified categorical approach now fail under the pure categorical approach because they list means rather than elements.
The residual clause is dead — Johnson v. United States
The "residual clause" of ACCA's violent-felony definition was held unconstitutionally vague in Johnson v. United States, 576 U.S. 591 (2015), and made retroactive on collateral review by Welch v. United States, 578 U.S. 120 (2016). Pre-2015 ACCA sentences that rested on residual-clause predicates are vulnerable to § 2255 relief.
For thirty years after ACCA's enactment, the residual clause — the catch-all language in § 924(e)(2)(B)(ii) defining a violent felony to include any offense that "otherwise involves conduct that presents a serious potential risk of physical injury to another" — was the primary battleground in ACCA litigation. The Supreme Court repeatedly attempted to give the residual clause workable content in cases including Begay v. United States, 553 U.S. 137 (2008), Chambers v. United States, 555 U.S. 122 (2009), Sykes v. United States, 564 U.S. 1 (2011), and James v. United States, 550 U.S. 192 (2007). None of those decisions produced a workable rule.
In Johnson v. United States, 576 U.S. 591 (2015), a 6-3 majority held the residual clause unconstitutionally vague under the Due Process Clause. The Court reasoned that the residual clause required courts to imagine the "ordinary case" of an offense and assess the risk that conduct presented — a methodology too speculative to satisfy due-process notice and arbitrary-enforcement requirements. Welch v. United States, 578 U.S. 120 (2016), held Johnson retroactive to cases on collateral review under the framework of Teague v. Lane, 489 U.S. 288 (1989). The combined effect was an immediate wave of § 2255 motions by federal prisoners serving residual-clause ACCA sentences.
For currently litigated ACCA cases, Johnson's practical effect is straightforward: the violent-felony analysis must proceed under the elements clause (§ 924(e)(2)(B)(i)) or the enumerated-offenses clause (§ 924(e)(2)(B)(ii) — burglary, arson, extortion, use of explosives), but not the residual clause. Where the government previously relied on the residual clause to qualify a borderline prior, that path is closed. Texas priors that historically qualified under the residual clause — including certain forms of unauthorized use of a motor vehicle, evading arrest with a vehicle, and certain types of escape — no longer categorically qualify as ACCA violent felonies and must be analyzed under the surviving elements-clause and enumerated-offenses-clause framework instead.
In post-conviction § 2255 practice, the Johnson/Welch framework remains a live source of relief in 2026. A federal prisoner serving an ACCA sentence imposed before Johnson may file a § 2255 motion seeking resentencing if the original predicate analysis depended on the residual clause. The threshold question — whether the original sentence in fact relied on the residual clause — is itself heavily litigated. Beeman v. United States, 871 F.3d 1215 (11th Cir. 2017), and the Fifth Circuit's decisions in United States v. Wiese, 896 F.3d 720 (5th Cir. 2018), among others, govern the proof requirements. The defendant must demonstrate by a preponderance that, more likely than not, the sentencing court relied on the residual clause rather than the elements clause or enumerated-offenses clause. Where the sentencing record is ambiguous, modern post-Johnson analysis of the predicate often resolves the question — if the predicate would not qualify under any surviving clause today, the original reliance on the residual clause is the most plausible explanation.
Recklessness cannot satisfy the elements clause — Borden
Borden v. United States, 593 U.S. 420 (2021), held that purely reckless offenses do not qualify as "violent felonies" under ACCA's elements clause. The decision narrowed the qualifying predicates substantially, particularly in jurisdictions with reckless-mens-rea aggravated assault statutes.
Borden v. United States, 593 U.S. 420 (2021), is the most consequential ACCA decision of the post-Johnson era. A four-Justice plurality, joined by a fifth Justice in the judgment, held that a criminal offense with a mens rea of recklessness does not categorically satisfy ACCA's elements clause. The elements clause requires that the offense have as an element "the use, attempted use, or threatened use of physical force against the person of another." The plurality concluded that "against the person of another" requires conduct directed at another person — purposeful or knowing conduct, not merely conduct that causes harm to another as an incidental result of risk-taking. A defendant who acts recklessly may foresee a risk of harm to another but does not direct his conduct against another in the sense the elements clause requires.
The decision substantially narrowed the universe of qualifying violent-felony predicates. Pre-Borden, many state-court reckless-mens-rea offenses had been treated as elements-clause-qualifying violent felonies — particularly aggravated assault statutes that permitted conviction on a reckless mens rea. After Borden, those convictions categorically do not qualify under the elements clause. Texas aggravated assault under Penal Code § 22.02 is a particularly important example: the statute encompasses conduct committed intentionally, knowingly, or recklessly under the underlying assault definition in § 22.01. Where the prior conviction did not specify the mens rea, the defense argues that the conviction categorically reaches reckless conduct and therefore fails the elements clause under Borden.
The divisibility analysis interacts with Borden in complex ways. If Texas aggravated assault under § 22.02 is treated as divisible by mens rea — listing intentional, knowing, and reckless as alternative elements — then under the modified categorical approach the court can consult Shepard documents to determine which mens rea the defendant was convicted under, and a conviction for intentional aggravated assault may still qualify under Borden. But if § 22.02 is treated as indivisible — listing the three mens rea options as alternative means of committing a single offense — then under the pure categorical approach, the court must treat the conviction as reaching the broadest mens rea available, including recklessness, and the prior categorically fails the elements clause. Fifth Circuit precedent on Texas aggravated assault divisibility under Mathis is the controlling framework, and the case law has continued to develop through 2025-2026.
Borden also affects federal § 2255 collateral review. Federal prisoners whose ACCA sentences were predicated on reckless-mens-rea state offenses may seek resentencing. The retroactivity analysis is more complex than Johnson's — Borden is statutory rather than constitutional — but several Circuits have held Borden retroactive on collateral review under specific frameworks, and counsel evaluates each post-conviction case under the prevailing Circuit law. The combined effect of Johnson, Mathis, and Borden is that many ACCA sentences imposed before 2015 rest on predicate analyses that no longer hold up — creating a continuing source of post-conviction relief.
Different occasions — Wooden and Erlinger
ACCA requires that the three qualifying priors be "committed on occasions different from one another." Wooden v. United States, 595 U.S. 360 (2022), adopted a multi-factor inquiry rather than a mechanical timing test. Erlinger v. United States, 602 U.S. 821 (2024), held the different-occasions determination must be made by a jury beyond a reasonable doubt.
The "different occasions" requirement at 18 U.S.C. § 924(e)(1) is the third element of ACCA qualification — and one that historically received less attention than the categorical analysis of individual predicates. Wooden v. United States, 595 U.S. 360 (2022), changed that. Wooden had been convicted of burglarizing ten storage units in a single Georgia storage facility on one night, in succession; the government argued each unit was a separate occasion and added the ten burglaries together as three or more ACCA predicates. The Supreme Court unanimously rejected the position, holding that the different-occasions analysis is a multi-factor inquiry into the temporal, locational, and circumstantial relationships among the offenses — not a mechanical "any time gap = different occasion" rule.
The Wooden factors include: how close in time the offenses were; whether they were part of a single uninterrupted course of conduct; the geographic relationship among the offenses; whether they shared common victims, instrumentalities, or motives; and whether the offenses were so distinct in time and character that a person of ordinary understanding would describe them as separate events. The analysis is fact-specific and resists categorical answers, which gives defense counsel substantial room for argument in cases where the alleged predicates arose from the same night, the same location, or the same continuous course of conduct.
Erlinger v. United States, 602 U.S. 821 (2024), added a procedural requirement that transformed the practical operation of the different-occasions analysis. The Court held that the Fifth and Sixth Amendments — and the framework of Apprendi v. New Jersey, 530 U.S. 466 (2000) — require the different-occasions determination to be made by a jury beyond a reasonable doubt, not by the sentencing judge by a preponderance. The reasoning was straightforward: because the different-occasions finding raises the statutory maximum (from 15 years to life) and triggers the 15-year mandatory minimum, it is an "element" of the aggravated offense under Apprendi and must be tried to a jury under the Sixth Amendment.
The practical implications of Erlinger are substantial. Government must now charge the different-occasions theory in the indictment, prove it beyond a reasonable doubt at trial, and obtain a unanimous jury verdict on the different-occasions element. Defense counsel can move to dismiss ACCA enhancement allegations that do not adequately plead the different-occasions theory, can request limiting instructions and unanimity instructions on different-occasions analysis, and can preserve Erlinger-based challenges in any case where the government failed to obtain a jury finding on different-occasions. The decision is also retroactive in some Circuits on collateral review, opening § 2255 relief for pre-Erlinger ACCA sentences where the different-occasions finding was made by the judge rather than the jury — though Circuit law on retroactivity is still developing as of mid-2026.
Texas priors as ACCA predicates — burglary, aggravated assault, UCW, robbery, drug offenses
Most Texas priors reach federal sentencing as ACCA candidates under one or more of the violent-felony or serious-drug-offense definitions. Texas burglary under § 30.02, aggravated assault under § 22.02, unlawful carrying of a weapon, robbery under § 29.02, and Texas Health and Safety Code controlled-substance offenses are the recurring categories.
Texas Penal Code § 30.02 burglary is the single most-litigated ACCA predicate category for Texas defendants. The statute reaches three types of conduct: (1) entry of a habitation or building not open to the public with intent to commit a felony, theft, or assault; (2) remaining concealed with the same intent; and (3) entry and committing or attempting to commit a felony, theft, or assault. Each of those three branches has its own elements, and each branch may or may not satisfy ACCA's enumerated-offenses "burglary" generic definition under Taylor — which the Supreme Court defined as unlawful entry into a building or other structure with intent to commit a crime. Texas burglary is broader than the generic definition in several respects, including by reaching entry of a "habitation" defined to include vehicles adapted for overnight use, and by reaching "remaining concealed" conduct that is not entry. The Fifth Circuit's burglary divisibility cases — including United States v. Herrold, 941 F.3d 173 (5th Cir. 2019) (en banc), and its progeny — control the analysis. After Mathis, the question of whether the three branches are alternative elements or alternative means is the threshold inquiry.
Texas aggravated assault under Penal Code § 22.02 is the second major battleground. As discussed in the previous section, the statute permits conviction on a reckless mens rea, which after Borden categorically fails the elements clause. The divisibility analysis under Mathis — whether the intentional, knowing, and reckless mens rea options are alternative elements or alternative means — is contested in the Fifth Circuit. Where the prior conviction's record does not establish the mens rea, the defense argues for the broadest mens rea (recklessness) and therefore non-qualification. Where the record establishes intentional or knowing conduct, the modified categorical approach permits qualification — but only if the statute is divisible. Practitioners should also note that aggravated assault by threat — making someone fear imminent bodily injury — may not satisfy the elements clause even under intentional or knowing mens rea, because the threat element does not always require directed physical force.
Texas robbery under Penal Code § 29.02 has been treated as elements-clause-qualifying violent felony in most Fifth Circuit cases, but the analysis is not uncontested. Robbery requires causing bodily injury, threatening or placing another in fear of imminent bodily injury or death, in the course of committing theft. The elements-clause question is whether all three branches require "use, attempted use, or threatened use of physical force" — the threat branch is the contested one. Aggravated robbery under § 29.03 has historically been treated as a clear elements-clause qualifying offense because of the aggravating elements (use of a deadly weapon, infliction of serious bodily injury, or victim status). Defense counsel preserves elements-clause challenges to both robbery and aggravated robbery in every case where the predicate analysis matters.
Texas Health and Safety Code controlled-substance offenses qualify as ACCA "serious drug offenses" under § 924(e)(2)(A)(ii) when they involve manufacturing, distributing, or possessing with intent to manufacture or distribute and carry a 10-year-or-more statutory maximum under Texas law. After Brown v. United States, 602 U.S. 101 (2024), the determination of whether the underlying substance is a "controlled substance" is made by reference to the federal drug schedules in effect at the time of the federal § 922(g) offense — not the schedules in effect at the time of the underlying state conviction. This holding affects Texas priors involving substances that have moved on or off federal Schedule I — including specific synthetic cannabinoid and synthetic cathinone substances that were scheduled in Texas before federal scheduling. The defense reviews every alleged drug predicate under the post-Brown framework, comparing the substance involved in the prior to the federal schedule in effect at the time of the § 922(g) offense.
Unlawful carrying of a weapon (UCW) under former Texas Penal Code § 46.02 — the statute that historically criminalized concealed carry of handguns by individuals without a license to carry — is generally NOT an ACCA violent felony. The elements clause requires use, attempted use, or threatened use of physical force; mere possession of a weapon does not satisfy that requirement. UCW also is not enumerated as a generic offense in the enumerated-offenses clause. As a practical matter, UCW priors should be excluded from ACCA analysis as a matter of routine, but defense counsel verifies the analysis in every case because government PSR writers occasionally include UCW priors in the ACCA prior-offense roster in error.
ACCA defense strategies at trial and sentencing
Effective ACCA defense centers on: (1) obtaining certified Shepard-approved records for every alleged predicate; (2) running each predicate through the full Taylor/Mathis/Borden/Wooden/Erlinger framework; (3) preserving Erlinger jury-finding challenges; and (4) building the cooperation analysis when categorical defeat is unavailable.
The first and most important step in any ACCA case is collecting the certified judgment-and-sentence records for every alleged predicate. This is non-negotiable. The PSR's narrative summary of the prior conviction is insufficient — the analysis depends on the precise statute of conviction, the charging document, and the plea record. Defense counsel routinely files motions to compel production of certified records and obtains Shepard-approved documents — the indictment, plea agreement, plea colloquy, jury instructions, and judgment — for each alleged predicate. Records older than ten or fifteen years may require active investigation: the court of conviction, the state department of public safety, the relevant district clerk, and (for very old records) the Texas State Library and Archives Commission. A predicate that lacks certified records is vulnerable to challenge — the government must prove the existence and qualification of the prior by a preponderance, and the absence of complete certified records can defeat that proof.
Once the records are in hand, counsel runs each predicate through the categorical-approach framework: (1) Is the statute of conviction divisible under Mathis? (2) If indivisible, does the pure categorical approach permit qualification — or does the statute sweep in conduct broader than the generic ACCA-qualifying offense? (3) If divisible, what do the Shepard-approved documents establish about the alternative element of conviction? (4) Does the predicate satisfy the elements clause under Borden — requiring directed use of physical force against another, not merely reckless conduct? (5) Does the predicate fit within the enumerated-offenses clause? (6) For "serious drug offenses," does the substance qualify under the federal schedule in effect at the time of the § 922(g) offense per Brown? The analysis is mechanical but unforgiving — a single mistake at any step can mean the difference between a 15-year mandatory floor and the unenhanced statutory range.
Erlinger-based challenges are now a routine part of ACCA defense. The defense moves to require the indictment to plead the different-occasions theory, requests that the different-occasions determination be submitted to the jury beyond a reasonable doubt, and preserves the issue for appeal in any case where the government attempts to rely on a judge-made different-occasions finding. In cases where the predicates arose from the same night, the same location, or the same continuous course of conduct, the defense develops the factual record at trial in a way that supports a single-occasion theory under Wooden's multi-factor analysis. Jury instructions on different-occasions analysis are now contested at the charge conference, and defense counsel proposes specific instructions tracking Wooden's temporal, locational, and circumstantial factors.
Where categorical defeat is unavailable — that is, where each of the three alleged predicates clearly qualifies under post-Borden/Wooden/Brown analysis — the defense pivots to cooperation analysis. ACCA permits sentencing below the 15-year floor only on a government 5K1.1 motion for substantial assistance combined with 18 U.S.C. § 3553(e). The safety valve is not available. The cooperation calculation involves disclosure of risks (cooperation is not confidential; the government may use the defendant's statements against him; the defendant must accept the risk of testifying), value assessment (what the defendant knows that the government does not already know), timing (cooperation has the most value before indictment), and the historical practices of the assigned AUSA team. The decision is fact-specific and time-sensitive. Defense counsel runs the cooperation analysis from day one of the case, with full transparency to the client about both the upside and the downside.
Sentencing-mitigation work for ACCA-eligible defendants is also distinct from ordinary federal weapons sentencing. The 15-year floor caps downward exposure absent cooperation, so the mitigation focus shifts upward — building the record for a sentence at the 15-year floor (not above it) and for favorable Bureau of Prisons designation. PSR objections under Fed. R. Crim. P. 32 address the predicate-qualification analysis (preserving issues for appeal and § 2255), the Guidelines calculation under USSG § 4B1.4, and any factual disputes about the offense conduct. Sentencing memoranda address the 18 U.S.C. § 3553(a) factors with attention to the defendant's personal history, family ties, mental health and substance-use history, employment record, and any post-offense rehabilitation. BOP designation requests under 18 U.S.C. § 3621(b) identify a preferred facility (lower-security designations are unlikely for ACCA defendants, but designation requests for facilities closer to family can succeed). First Step Act earned-time credits are unavailable for ACCA defendants under the disqualifying-offense list in 18 U.S.C. § 3632(d)(4)(D) — a meaningful BOP impact that the mitigation package should acknowledge and work around.
§ 2255 collateral relief for ACCA defendants
Federal prisoners serving ACCA sentences imposed before Johnson (2015), Borden (2021), Wooden (2022), and Erlinger (2024) may be entitled to § 2255 relief if the predicate analysis no longer holds up. The retroactivity, timeliness, and procedural-default frameworks each have to be navigated carefully.
The post-conviction relief framework for ACCA defendants is built on 28 U.S.C. § 2255, the federal habeas analogue for prisoners in custody on federal sentences. The standard one-year statute of limitations under § 2255(f) starts from the latest of (1) the date the judgment of conviction became final; (2) the date the impediment to filing was removed (rare); (3) the date the constitutional right asserted was newly recognized by the Supreme Court and made retroactively applicable to cases on collateral review; or (4) the date the facts supporting the claim could have been discovered. For ACCA defendants seeking relief under Johnson, the one-year clock ran from the June 2015 decision until June 2016 — closed for first motions absent extraordinary circumstances, but still open for second-or-successive motions in many Circuits.
The Johnson framework remains the cleanest post-conviction theory for residual-clause ACCA sentences. Welch v. United States, 578 U.S. 120 (2016), expressly held Johnson retroactive on collateral review, satisfying the § 2255(f)(3) trigger. The substantive analysis on a Johnson motion is two-step: (1) did the original sentencing court rely on the residual clause for at least one of the three qualifying predicates? (2) If so, would the predicate qualify under one of the surviving clauses (elements clause or enumerated-offenses clause) today? If the answer to (1) is yes and the answer to (2) is no for any one of the three predicates, the ACCA sentence collapses and the defendant is entitled to resentencing under the unenhanced § 924(a) range.
Post-Borden collateral relief is more complex because Borden is statutory rather than constitutional. The retroactivity analysis is governed by Teague v. Lane and its progeny: a new rule of statutory interpretation is generally retroactive on collateral review only if it is "substantive" — narrowing the category of conduct or persons subject to punishment — rather than "procedural." Several Circuits have held Borden substantive and therefore retroactive (the rule narrows the category of offenses qualifying as "violent felonies"), but the analysis is not uniform, and counsel must research the prevailing rule in the relevant Circuit. Where Borden is retroactive, defendants with reckless-mens-rea state-court predicates may seek resentencing on the same basic two-step framework as Johnson: did the original sentencing rely on a reckless-mens-rea predicate, and would the predicate fail post-Borden?
Wooden and Erlinger retroactivity is the leading edge of ACCA § 2255 practice in 2026. Wooden's narrowing of the different-occasions analysis may qualify as substantive (it can eliminate ACCA qualification where the alleged predicates arose from a single occasion). Erlinger's jury-finding requirement is procedural in form but produces substantive consequences. Circuit law on retroactivity for both decisions is still developing, and counsel preserves the issues in every applicable case. Where retroactivity is unsettled, alternative theories — including ineffective-assistance-of-counsel claims under Strickland v. Washington, 466 U.S. 668 (1984), for failure to raise categorical challenges that would have been meritorious — provide a parallel relief pathway.
Procedural default is the recurring obstacle. A § 2255 movant cannot raise on collateral review claims that could have been raised on direct appeal but were not — unless the movant can show "cause" for the default and "prejudice" from it, or actual innocence under Bousley v. United States, 523 U.S. 614 (1998). For post-conviction ACCA claims, cause is typically established by the novelty of the underlying Supreme Court decision (the law was unsettled at the time of direct appeal). Prejudice is the post-decision categorical analysis: if the predicate would not qualify today, the defendant was prejudiced by the residual-clause/elements-clause/different-occasions error. Counsel develops the procedural-default record at the trial-and-appellate stage to make collateral relief easier, even where direct relief on the underlying issue is unavailable. The combined work of trial-level categorical preservation, direct-appeal categorical argument, and § 2255 collateral attack is a multi-year effort that frequently produces meaningful sentence reductions even where the original 15-year mandatory floor seemed unbreakable.
