United States v. Guyton: The Third Circuit Adopts Plain-Error Review for Unpreserved § 851(b) Omissions and Expands the Meaning of “Term of Imprisonment” for Serious-Drug-Felony Enhancements

Introduction

In United States v. Lynell Guyton, the Third Circuit confronted a sweeping appeal raising trial, sentencing, and constitutional challenges to a nine-count conviction for fentanyl trafficking, firearms possession, and money laundering. The decision is remarkable not only for its meticulous review of a complex record but, more importantly, for two questions of first impression:

What standard of review applies when a defendant fails to object to the district court’s failure to conduct the mandatory § 851(b) colloquy?
Does “term of imprisonment” in 21 U.S.C. § 802(58) include pre-trial detention later credited to a sentence, even if the detention was originally served for a different case?

The court answered both questions in ways that will reverberate through federal sentencing practice: (1) unpreserved § 851(b) errors are subject to plain-error review; and (2) credited pre-trial detention counts toward the twelve-month threshold for a “serious drug felony.” At the same time, the panel vacated one felon-in-possession count for lack of evidence but affirmed the remaining convictions and a 360-month sentence.

Summary of the Judgment

Count 3 (felon in possession—firearms in derelict house) vacated; judgment of acquittal ordered.
All other counts—including drug, money-laundering, and the second firearm count—affirmed.
District court’s failure to give a § 851(b) colloquy was plain error but not reversible because it did not affect substantial rights.
The court adopts a broad definition of “term of imprisonment” under § 802(58), encompassing pre-trial detention later credited to the predicate sentence.
Jury-instruction errors on Analogue-Act knowledge, and a possible constructive-amendment error on the money-laundering counts, were also deemed non-prejudicial under the Olano plain-error framework.

Analysis

1. Precedents Cited and Their Influence

United States v. Olano, 507 U.S. 725 (1993) – Governs four-prong plain-error analysis applied throughout the opinion.
McFadden v. United States, 576 U.S. 186 (2015) – Sets the two alternative knowledge requirements in Analogue-Act cases; instructional error analyzed under this precedent.
United States v. Jenkins, 90 F.3d 814 (3d Cir. 1996) and United States v. Foster, 891 F.3d 93 (3d Cir. 2018) – Provide constructive-possession standards that led to vacatur of Count 3.
United States v. Greer, 593 U.S. 503 (2021) – Authorizes appellate courts to review the entire record when assessing plain-error prejudice.
United States v. Johnson, 899 F.3d 191 (3d Cir. 2018) – Distinguishes “pure sentencing” from “mixed trial-and-sentencing” Apprendi/Alleyne errors, shaping the analysis of the jury-fact-finding omission.
Split authority on § 851(b) standard of review: United States v. Baugham, 613 F.3d 291 (D.C. Cir. 2010) (harmless-error) versus United States v. Severino, 316 F.3d 939 (9th Cir. 2003) (plain-error). The Third Circuit sided with the Ninth Circuit, cementing a circuit split.

2. Legal Reasoning

a. Constructive Possession (Count 3)

The panel required evidence of both knowledge and dominion or control over the area where the firearms were found. Unlike cases such as Foster, Guyton was never seen in or linked forensically to the abandoned house; therefore a reasonable jury could not find constructive possession.

b. Plain-Error Framework

For each unpreserved claim—McFadden instructions, constructive amendment, § 851(b) omission, and Apprendi/Alleyne defects—the court marched through the four Olano factors, often finding the first two prongs met (error and plainness) but denying relief at prong 3 (prejudice) or prong 4 (effect on fairness and integrity).

c. Standard of Review for § 851(b) Omissions

Concluding that Rule 52(b) governs unless Congress expressly says otherwise, the court rejected Baugham’s “harmless-error” view, aligning with Severino and the Supreme Court’s insistence on a bright line between preserved and unpreserved error.

d. Definition of “Term of Imprisonment”

Interpreting statutory text against contemporary dictionary definitions, the panel held that pre-trial detention credited to a sentence forms part of the ultimate “term of imprisonment,” even if the detention was in another case. Consequently, Guyton’s credited 256 days of custody plus the 220 days post-sentencing exceeded the 12-month threshold in § 802(58).

e. Apprendi/Alleyne Error as Mixed Error

Because the indictment alleged, but the jury never found, the serious-drug-felony facts, the court categorized the omission as a mixed trial-and-sentencing error, permitting consultation of the Presentence Report and uncontested state-court records to establish the missing facts beyond reasonable doubt.

3. Impact on Future Litigation

Sentencing Practice: District courts must still conduct § 851(b) colloquies, but defendants who fail to object face the high bar of plain-error review on appeal.
Definition of Serious Drug Felony: Defense counsel must reckon with the new rule that any credited custody—no matter how or why credited—counts toward the 12-month requirement, making challenges to “time served” virtually futile unless credit is shown to be legally void.
Analogue-Act Trials: The McFadden instructional pitfalls highlighted here are a cautionary tale; prosecutors should draft proposed charges that tie knowledge explicitly to federal control and require the chemical/physiological comparison.
Constructive Amendment Claims: Even clear deviations between indictment and jury instructions may be affirmed under Olano’s fourth prong if the charged and uncharged theories are “closely linked” and the evidence is overwhelming.
Circuit Split Deepened: By adopting plain-error review for § 851(b) omissions, the Third Circuit solidifies a division with the D.C. Circuit, enhancing the likelihood of eventual Supreme Court review.

Complex Concepts Simplified

Plain Error (Rule 52(b))— A four-step test: (1) error; (2) clear/obvious; (3) affects substantial rights (usually meaning it likely changed the outcome); (4) seriously affects fairness/integrity of the proceedings.
§ 851 Information & Colloquy— The government must file an information identifying the prior conviction and the court must question the defendant about it before imposing an enhanced sentence.
Serious Drug Felony (21 U.S.C. § 802(58))— Requires (A) >12 months’ imprisonment served and (B) release within 15 years of the new offense. “Imprisonment” now definitively includes credited pre-trial detention.
Constructive Possession— No need for physical custody; requires knowledge of the item and dominion/control over the place where it is found.
Constructive Amendment vs. Variance— Amendment changes the crime charged; variance merely changes the facts relied upon. Amendments violate the Fifth Amendment Grand Jury Clause.

Conclusion

United States v. Guyton is significant for three holdings:

Unpreserved failures to comply with § 851(b) are reviewed for plain error, not harmless error.
“Term of imprisonment” under § 802(58) includes any credited pre-trial custody, even if originally served for another case, thereby broadening the pool of prior convictions that may trigger severe recidivist enhancements.
The court reaffirmed rigorous evidentiary requirements for constructive possession and for McFadden’s mens-rea standard while demonstrating restraint under Olano when trial errors do not undermine outcome reliability.

Practitioners should heed the decision’s twin messages: preserve objections early and often, and expect that any time a defendant has physically spent behind bars—regardless of the case that put him there—may count against him when the government seeks “serious drug felony” enhancements in future prosecutions.

United States v. Guyton: The Third Circuit Adopts Plain-Error Review for Unpreserved § 851(b) Omissions and Expands the Definition of “Term of Imprisonment” under 21 U.S.C. § 802(58)