Minor-Role Reductions in Drug Cases: Primary Function Controls, Not Categorical Exclusions

1. Introduction

In United States v. Vizcaino Vizcaino, the First Circuit interpreted a recently adopted Sentencing Guidelines provision designed to broaden access to mitigating-role adjustments in drug cases. The court held that U.S.S.G. § 2D1.1(e)(2)(B)(ii) requires attention to a defendant’s primary trafficking function under the totality of the circumstances. Neither possessing more than a user-level quantity of drugs while making individual deliveries nor working as a paid distributor automatically disqualifies a defendant from a minor-role reduction.

The appeal arose from Yeiron Vizcaino Vizcaino’s conviction for participating in a fentanyl-distribution conspiracy. The district court denied a two-level minor-role adjustment and imposed thirty-six months’ imprisonment. Although that sentence fell below the Guidelines range calculated by the district court, the First Circuit vacated the sentence because the court had interpreted the new provision too narrowly.

The decision does not establish an automatic reduction for street-level dealers. Its significance lies in preventing illustrative examples from becoming rigid eligibility requirements and ensuring that the amendment’s broader, function-centered inquiry receives independent consideration.

2. Background and Sentencing Proceedings

The distribution organization and Vizcaino’s role

Vizcaino worked for approximately two months as a street-level distributor in a Boston-area fentanyl and cocaine organization led by Yulial Cuello-Reynoso. Cuello-Reynoso and others received customers’ telephone orders and relayed delivery instructions to distributors. Those distributors used organization-supplied cars stocked with a day’s drugs, delivered user-level quantities, and collected payments.

Vizcaino was one of thirteen distributors with approximately equal culpability. All thirteen were less culpable than the eleven other charged co-conspirators. Intercepted telephone calls and drugs recovered when police stopped Vizcaino’s car formed the basis for attributing to him approximately 310.2 grams of fentanyl, 94 grams of crack cocaine, and 55 grams of powder cocaine.

On October 15, 2025, Vizcaino pleaded guilty without a plea agreement to conspiracy to possess with intent to distribute and to distribute forty grams or more of fentanyl, violating 21 U.S.C. §§ 846, 841(a)(1), and 841(b)(1)(B)(vi).

The disputed role adjustment

Probation recommended a two-level minor-participant adjustment under § 3B1.2(b), emphasizing that Vizcaino acted under Cuello-Reynoso’s direction rather than independently choosing orders or delivery locations. With that adjustment, probation calculated an offense level of twenty-one and a Guidelines Sentencing Range of thirty-seven to forty-six months.

Vizcaino initially sought the larger, four-level adjustment for a minimal participant under § 3B1.2(a), but withdrew that objection and supported probation’s recommendation. The government opposed any mitigating-role adjustment.

The district court rejected the two-level reduction. It concluded that Vizcaino had not established entitlement under the traditional comparative-culpability approach and interpreted the new drug-specific provision as unavailable because he possessed more than user-level quantities and occupied a paid position within the organization’s business model.

The court ultimately varied downward and imposed thirty-six months’ imprisonment.

3. Summary of the Opinion

The First Circuit identified two errors of Guidelines interpretation:

1. Possession is not distribution. Holding more than a user-level quantity does not categorically exclude a defendant who distributes drugs to individual customers in user-level quantities.
2. Paid participation is not an automatic bar. Being hired and paid within an organization’s business model does not itself defeat eligibility merely because the defendant did not fall into, or feel pressured into, the role.

Both circumstances may remain relevant to the ultimate assessment. But the district court could not convert them into exclusions absent from the guideline. Nor could it treat the provision’s illustrative examples as an exhaustive list of qualifying defendants.

The court therefore vacated the sentence and remanded for resentencing. It did not direct that Vizcaino receive the adjustment or prescribe his new sentence. It also left unresolved his separate argument that § 3B1.2(b) directly warranted a reduction, including the government’s contention that he had waived or forfeited that argument.

4. Analysis

A. The amendment’s function-centered approach

Amendment 833, effective November 1, 2025, added the provision at issue. The Sentencing Commission explained that an earlier, 2015 amendment had not produced a sustained increase in mitigating-role adjustments in drug cases. The new amendment sought to encourage broader use of § 3B1.2 and expand the circumstances in which reductions are warranted.

Section 2D1.1(e)(2)(B)(ii) states that a two-level adjustment is “generally warranted” when the defendant’s primary function was performing a low-level trafficking function. It gives examples, including distributing user-level quantities for little or no compensation or acting primarily for reasons other than profit, such as a relationship, threats, or fear.

Crucially, the provision makes the adjustment available regardless of whether the offense involved additional participants and regardless of whether the defendant was substantially less culpable than the average participant. The adjustment’s extent remains dependent on the totality of the circumstances.

This changes the inquiry’s emphasis. A defendant’s position relative to co-participants is no longer an indispensable eligibility condition under this drug-specific provision. Courts must examine what the defendant predominantly did, rather than merely determine whether enough other participants were more culpable.

B. Precedents cited and their influence

United States v. Arias-Mercedes, 901 F.3d 1 (1st Cir. 2018)

The government invoked United States v. Arias-Mercedes for the traditional rule that a defendant seeking a mitigating-role adjustment must establish, by a preponderance of the evidence, that the defendant was substantially less culpable than the average participant in the relevant criminal activity.

That precedent framed the dispute over direct application of § 3B1.2. The new provision, however, expressly removes comparative culpability as a necessary condition for the drug-specific route at issue. The opinion therefore does not overrule United States v. Arias-Mercedes; it recognizes that the amended guideline supplies a distinct basis for relief. Because resentencing was required on that basis, the court did not decide the separate direct-application dispute.

United States v. Guía-Sendeme, 134 F.4th 611 (1st Cir. 2025)

United States v. Guía-Sendeme served two purposes. First, it illustrated the pre-amendment comparative-culpability framework that could make adjustments difficult for defendants belonging to a large group of similarly culpable, low-level participants.

Second, it supplied guidance on when a Guidelines-calculation error may be harmless. Here, the district court had not stated that it would impose the same sentence if the adjustment applied. The First Circuit therefore could not conclude that the erroneous calculation left the sentence unaffected.

United States v. Walker, 89 F.4th 173 (1st Cir. 2023)

The court cited United States v. Walker both for the earlier comparative framework and for the proposition that some conspiracies may have no participant who qualifies for a minor-role adjustment. That qualification prevents a mistaken inference that every criminal organization must have someone entitled to a reduction.

Nevertheless, the First Circuit found it unclear why this conspiracy would present such a case, given Vizcaino’s low-level function and the amendment’s expanded scope. The court also relied on United States v. Walker in concluding that resentencing was necessary because the record did not establish that the Guidelines error had no effect.

United States v. De la Cruz-Gutiérrez, 881 F.3d 221 (1st Cir. 2018)

Cited through United States v. Walker, United States v. De la Cruz-Gutiérrez illustrated a situation in which participants were “equal partners in the criminal activity” and a mitigating-role adjustment was denied.

Its relevance is limiting rather than controlling. Equal culpability can matter under the traditional framework, but it cannot be imported as a categorical obstacle where the amended drug guideline expressly dispenses with the requirement that the defendant be substantially less culpable than the average participant.

United States v. Daniells, 79 F.4th 57 (1st Cir. 2023)

United States v. Daniells established the applicable standard of review: appellate courts review a guideline’s legal meaning and scope de novo. The district court’s statements defined classes of defendants it believed the provision excluded. Those were interpretive conclusions, not merely factual assessments.

This distinction allowed the First Circuit to correct the legal boundaries of the inquiry while leaving the ultimate, fact-sensitive sentencing determination to the district court on remand.

Buford v. United States, 532 U.S. 59 (2001)

The government relied on Buford v. United States to argue for deferential review of a fact-bound Guidelines application, even where the underlying facts were undisputed.

The First Circuit distinguished that principle rather than rejecting it. The problem here was not simply how the district court weighed Vizcaino’s circumstances. It was the court’s antecedent legal conclusion that particular circumstances placed him outside the provision’s reach. Deference to factual application does not insulate an incorrect interpretation.

C. Distribution quantities cannot be replaced with possession quantities

The district court read “distributing controlled substances in user-level quantities” as excluding someone carrying enough drugs for multiple customers. The First Circuit rejected that reading because the text addresses the quantities distributed, not the distributor’s aggregate inventory.

A delivery worker may carry a substantial supply while making only small, retail-level transfers. The stock carried in the vehicle does not, standing alone, change the character of each delivery.

The holding nevertheless preserves the relevance of quantity. Possession of a larger amount may inform the overall assessment of the defendant’s function and responsibility. What it cannot do is automatically end the inquiry.

D. Illustrative examples are not exclusive eligibility conditions

The district court also understood the provision as directed toward people who fell into, or were pushed into, distribution rather than those hired to perform an established commercial role. The First Circuit found no categorical distinction of that kind in the guideline.

The Commission expressly described the examples as illustrative rather than definitive because trafficking organizations involve many different functions. Accordingly, compensation, profit motivation, and freedom of choice may bear on the analysis, but they are not independently disqualifying.

The government argued that Vizcaino had invited an exclusive focus on the examples. The court rejected that contention because his submissions also emphasized broader functional considerations: his short involvement, lowest-level trafficking duties, lack of participation in stash-house activities or drug packaging, and use of an organization-provided car.

E. The required inquiry remains individualized

The opinion identifies the governing question without prescribing a mechanical checklist: what was the defendant’s primary trafficking function, considered in context? It highlights several potentially relevant circumstances:

• The defendant’s actual tasks and decision-making authority.
• The duration and scope of participation.
• Whether the defendant packaged drugs, accessed stash houses, or supplied transportation.
• The quantities possessed and the quantities delivered to customers.
• Compensation, motivation, and the surrounding organizational structure.

These considerations are not new mandatory elements. Nor does the opinion guarantee relief to anyone occupying the organization’s lowest rank. Rather, the district court must apply the correct legal framework before exercising its fact-sensitive judgment.

F. A downward variance did not cure the Guidelines error

Vizcaino’s thirty-six-month sentence was one month below the bottom of the range that would have applied with the disputed adjustment. That numerical overlap did not establish harmlessness.

The district court never said it would impose the same sentence under the lower range, and the government did not argue that the error was harmless. The First Circuit could not assume that beginning from a different Guidelines range would leave the ultimate sentence unchanged.

5. Potential Impact

The decision is particularly important for retail distributors working in organizations with numerous similarly situated delivery workers. Their similarity to one another cannot itself defeat a claim under a provision that expressly removes comparative culpability as a prerequisite.

For sentencing courts, the opinion requires a clear distinction between relevant facts and categorical legal exclusions. Drug inventory, compensation, and voluntary participation remain legitimate considerations, but courts must explain their significance within the primary-function analysis rather than treat them as automatic bars.

For advocates, the decision favors evidence describing actual responsibilities: who controlled orders, supplied vehicles, packaged drugs, selected destinations, and exercised discretion. Labels such as “dealer” or “delivery worker” cannot replace that factual examination.

The ruling’s limits are equally important. It interprets the amended drug guideline; it does not abolish the ordinary § 3B1.2 framework, guarantee reductions to paid distributors, resolve every question about the amendment, or address retroactive application.

6. Complex Concepts Simplified

Minor participant and minimal participant

Section 3B1.2 provides a two-level reduction for a minor participant and a four-level reduction for a minimal participant. Vizcaino ultimately pursued the two-level reduction.

Primary function

The defendant’s predominant job in the trafficking operation—not simply the total amount of drugs attributed to the defendant or the title assigned to the role.

Totality of the circumstances

Considering all relevant facts together rather than allowing one circumstance automatically to decide eligibility.

De novo review

Independent appellate review of a legal question, without deference to the district court’s interpretation.

Guidelines adjustment versus variance

An adjustment changes the calculation of the Guidelines range. A variance selects a sentence outside that range. A variance does not necessarily cure an incorrectly calculated range.

Harmless error

An error that did not affect the outcome. Here, the record did not establish that the sentencing error made no difference.

Vacatur and remand

The appellate court set aside the sentence and returned the case for resentencing. It did not overturn the guilty plea or dictate the replacement sentence.

7. Conclusion

United States v. Vizcaino Vizcaino gives practical force to Amendment 833’s expanded approach to mitigating-role adjustments. The controlling inquiry is the defendant’s primary trafficking function under all relevant circumstances—not whether the defendant precisely matches an example.

Carrying drugs for multiple customers and receiving payment may influence that assessment, but neither automatically forecloses relief. The decision preserves individualized sentencing while requiring courts to begin with the correct Guidelines framework.