Section 846 — the structure of the federal drug-conspiracy statute
21 U.S.C. §846 provides in full that "[a]ny person who attempts or conspires to commit any offense defined in this subchapter shall be subject to the same penalties as those prescribed for the offense, the commission of which was the object of the attempt or conspiracy." The statute does two critical things. First, it incorporates by reference the substantive penalty structure of 21 U.S.C. §841, including all of §841's mandatory minimum sentences. Second, it omits any requirement of an overt act, which distinguishes §846 from the general conspiracy statute at 18 U.S.C. §371. The government need only prove the agreement and the defendant's knowing participation.
The elements of a §846 conspiracy are: (1) an agreement between two or more persons to violate the Controlled Substances Act; (2) the defendant's knowledge of the conspiracy; and (3) the defendant's voluntary participation in the conspiracy. The agreement can be express or implied, and it can be inferred from circumstantial evidence — the relationship of the parties, their conduct, the surrounding circumstances, and the overall pattern of activity. The Fifth Circuit's standard jury instruction on a §846 conspiracy reflects this framework.
Critical to the architectural understanding: because §846 incorporates §841's penalty structure, the quantity-driven mandatory minimums apply to the conspiracy as fully as they apply to a completed distribution. A defendant convicted of conspiracy to distribute 500 grams of methamphetamine faces the same 10-year mandatory minimum as a defendant convicted of distributing the same quantity. The Guidelines drug-quantity table at USSG §2D1.1 applies in the same way. The conspiracy charge does not soften the penalty exposure.
21 U.S.C. §846 — the federal drug-conspiracy statute — provides that any person who attempts or conspires to commit any offense defined in the Controlled Substances Act is subject to "the same penalties as those prescribed for the offense the commission of which was the object of the attempt or conspiracy." That single sentence is the architectural foundation of federal drug-conspiracy practice. A §846 conviction carries the same mandatory minimums, the same statutory maximums, and the same Guidelines drug-quantity calculation as the substantive §841 distribution offense. The conspiracy charge does not require proof of an overt act, distinguishing §846 from the general federal conspiracy statute at 18 U.S.C. §371.
Defense work in a §846 case turns on five recurring battlegrounds: the agreement element and the scope of the conspiracy under Kotteakos v. United States, 328 U.S. 750 (1946); the drug-type and drug-quantity findings under Apprendi v. New Jersey, 530 U.S. 466 (2000), Alleyne v. United States, 570 U.S. 99 (2013), and Burrage v. United States, 571 U.S. 204 (2014); the foreseeable-scope of co-conspirator liability under Pinkerton v. United States, 328 U.S. 640 (1946); the §851 prior-felony enhancement; and the avenues for relief from mandatory minimums — the safety valve under 18 U.S.C. §3553(f), the 5K1.1 substantial-assistance motion, and the First Step Act amendments to §851. Reggie London, a co-founding partner at L and L Law Group, PLLC, is admitted to the Northern and Eastern Districts of Texas and the United States Court of Appeals for the Fifth Circuit (Texas State Bar #24043514).
Section 841 — quantity thresholds and mandatory minimums
The statutory mandatory minimums under 21 U.S.C. §841(b)(1) are quantity-driven. The principal triggers are:
| Drug | 5-yr / 40-yr (B) | 10-yr / life (A) |
|---|---|---|
| Cocaine (powder) | 500 g+ | 5 kg+ |
| Cocaine base (crack) | 28 g+ | 280 g+ |
| 100 g+ | 1 kg+ | |
| Methamphetamine (pure) | 50 g+ | 500 g+ |
| Methamphetamine (mixture) | 500 g+ | 5 kg+ |
| 40 g+ | 400 g+ | |
| Marijuana | 100 kg+ or 100+ plants | 1,000 kg+ or 1,000+ plants |
The (B) quantities trigger a 5-year mandatory minimum and a 40-year statutory maximum. The (A) quantities trigger a 10-year mandatory minimum and a statutory maximum of life. Where the offense results in death or serious bodily injury from use of the controlled substance, the mandatory minimum doubles — to a 20-year floor with a statutory maximum of life under §841(b)(1)(A) and (B). Below the (B) quantity thresholds, §841(b)(1)(C) applies for Schedule I and II substances: no mandatory minimum, a 20-year statutory maximum, or up to life if death or serious bodily injury results.
Because these quantities trigger mandatory minimums and statutory maximums, they are elements of the offense under Apprendi and Alleyne. The drug type and the quantity attributable to the defendant must be submitted to the jury and found beyond a reasonable doubt. Apprendi v. New Jersey, 530 U.S. 466, 490 (2000) ("any fact that increases the penalty for a crime beyond the prescribed statutory maximum must be submitted to a jury, and proved beyond a reasonable doubt"); Alleyne v. United States, 570 U.S. 99, 103 (2013) ("any fact that increases the mandatory minimum is an element that must be submitted to the jury"). The verdict form in a federal drug-conspiracy trial routinely contains special interrogatories on drug type and quantity.
The Apprendi / Alleyne / Burrage jury-fact framework
Three Supreme Court decisions structure the jury-fact landscape in a §846 prosecution. Apprendi v. New Jersey, 530 U.S. 466 (2000), established the constitutional baseline: any fact (other than a prior conviction) that increases the penalty for a crime beyond the prescribed statutory maximum must be submitted to a jury and proved beyond a reasonable doubt. Apprendi, 530 U.S. at 490. In a drug case, that rule means the drug-type and drug-quantity findings that elevate the case from §841(b)(1)(C) to (B) or (A) must be jury findings.
Alleyne v. United States, 570 U.S. 99 (2013), extended Apprendi to facts triggering mandatory minimums, overruling Harris v. United States, 536 U.S. 545 (2002). Alleyne, 570 U.S. at 116. After Alleyne, the drug type and quantity that trigger the 5-year, 10-year, or 20-year mandatory minimums under §841(b)(1) are elements that must be submitted to the jury. A judge cannot find these facts at sentencing and use them to elevate the mandatory minimum.
Burrage v. United States, 571 U.S. 204 (2014), addressed the "death results" enhancement under §841(b)(1)(C), which doubles the mandatory minimum to 20 years where death or serious bodily injury results from the use of the drug. The Court held that, "at least where use of the drug distributed by the defendant is not an independently sufficient cause of the victim's death or serious bodily injury, a defendant cannot be liable for penalty enhancement under §841(b)(1)(C) unless such use is a but-for cause of the death or injury." Burrage, 571 U.S. at 218-19. Burrage imposes a real causation requirement and rejects contributing-cause and substantial-factor formulations.
In a -overdose prosecution — a common §846 + §841(b)(1)(C) enhanced charge in the Northern and Eastern Districts of Texas — the Burrage causation analysis is the principal defense battleground. Toxicology reports, polypharmacy issues, the underlying medical condition of the decedent, and the chain of custody for the seized drugs all become critical. The government's burden is high: but-for causation, found by the jury, beyond a reasonable doubt.
Pinkerton liability and the Kotteakos single-vs-multiple analysis
Co-conspirator liability in a federal drug conspiracy is governed by Pinkerton v. United States, 328 U.S. 640 (1946). Pinkerton held that "a conspirator is responsible for substantive offenses committed by a co-conspirator in furtherance of the unlawful project," even without direct participation in the substantive offense. Pinkerton, 328 U.S. at 646-47. The Court limited Pinkerton liability with an important caveat: it does not extend to a substantive offense that "was not in fact done in furtherance of the conspiracy, did not fall within the scope of the unlawful project, or was merely a part of the ramifications of the plan which could not be reasonably foreseen as a necessary or natural consequence of the unlawful agreement." Id. at 647-48.
For drug-quantity purposes under the Guidelines, the Fifth Circuit and the commentary to USSG §1B1.3 (relevant conduct) impose two layered requirements: the co-conspirator conduct must be within the scope of the criminal activity that the defendant agreed to undertake jointly, and it must be reasonably foreseeable to the defendant. Defense practice often focuses on the scope-of-agreement limit. A street-level distributor who agreed to a limited role in a larger organization is not necessarily liable for the full organizational quantities under Pinkerton; the scope of his agreement controls.
The single-vs-multiple-conspiracy analysis under Kotteakos v. United States, 328 U.S. 750 (1946), is the second structural defense framework. Kotteakos held that where the indictment charges a single conspiracy but the proof establishes multiple separate and distinct conspiracies, the variance can be prejudicial error requiring reversal. Kotteakos, 328 U.S. at 773. The danger the Court identified is "transference of guilt from one to another across the line separating conspiracies." Id. at 774. In drug cases involving a hub-and-spoke structure — a single supplier dealing with multiple independent distributors who have no relationship to each other — defense counsel often argues that the indictment improperly charges a single conspiracy where the proof shows only multiple bilateral conspiracies. A successful Kotteakos challenge can result in reversal on appeal or a Rule 29 acquittal at the close of the government's case.
Section 851 — the prior-felony enhancement and First Step Act
21 U.S.C. §851 is the procedural vehicle for enhancing a federal drug-trafficking sentence based on a prior felony drug conviction. Before trial — and pre-plea — the government files an information identifying the qualifying prior. If the defendant is convicted at trial or pleads guilty, the prior is used to elevate the mandatory minimum. Pre-First Step Act, a single qualifying prior drug felony doubled the mandatory minimum, and two qualifying priors resulted in a mandatory life sentence on an §841(b)(1)(A) conviction.
The First Step Act of 2018, section 401, narrowed the scope of qualifying priors and reduced the enhanced mandatory minimums. After First Step:
- The qualifying prior must be a "serious drug felony" (a controlled-substance offense for which the defendant served more than 12 months' imprisonment and was released within 15 years of commencement of the instant offense) or a "serious violent felony" — narrower than the pre-First Step definition.
- A single qualifying serious drug felony or serious violent felony elevates an §841(b)(1)(A) 10-year mandatory minimum to 15 years.
- Two or more qualifying priors elevate an §841(b)(1)(A) mandatory minimum to 25 years (not mandatory life).
- On an §841(b)(1)(B) charge, a qualifying prior elevates the 5-year mandatory minimum to 10 years.
Procedural compliance with §851 is strictly enforced. The information must be filed before trial or before entry of the plea, must identify the prior conviction with specificity, and must be served on the defendant or defense counsel. Failure to file timely or correctly bars the enhancement. Defense practice scrutinizes the §851 information for procedural defects and analyzes each identified prior for whether it satisfies the post-First Step "serious drug felony" or "serious violent felony" definition. Where the prior is a Texas state-court conviction, the federal categorical analysis under Mathis v. United States, 579 U.S. 500 (2016), can defeat the enhancement if the elements of the Texas offense are broader than the federal definition.
Safety valve, 5K1.1, and Ruan — relief from mandatory minimums
The principal vehicles for relief from mandatory minimums in a federal drug case are the statutory safety valve under 18 U.S.C. §3553(f) and the government-filed substantial-assistance motion under USSG §5K1.1 and 18 U.S.C. §3553(e).
The safety valve at §3553(f), expanded by First Step Act section 402, allows the court to sentence below the otherwise-applicable mandatory minimum if the defendant meets five criteria: (1) the defendant does not have more than 4 criminal history points (excluding points from 1-point offenses), a prior 3-point offense, or a prior 2-point violent offense; (2) the defendant did not use violence or credible threats of violence or possess a firearm or other dangerous weapon in connection with the offense; (3) the offense did not result in death or serious bodily injury to any person; (4) the defendant was not an organizer, leader, manager, or supervisor of others in the offense and was not engaged in a continuing criminal enterprise under 21 U.S.C. §848; and (5) not later than the time of the sentencing hearing, the defendant has truthfully provided to the government all information and evidence the defendant has concerning the offense. The fifth element — the "tell-all" requirement — is the most demanding in practice; an inaccurate or incomplete safety-valve proffer can cost the defendant the relief.
A 5K1.1 motion for downward departure based on substantial assistance is filed by the government when the defendant has provided cooperation that the government judges to be substantial. The motion is the only vehicle through which a court may sentence below a statutory mandatory minimum based on cooperation. Melendez v. United States, 518 U.S. 120, 130-31 (1996). Without a government motion under §3553(e), the court cannot go below the floor. Defense practice involves careful pre-cooperation analysis, structured proffer sessions under a Kastigar letter, and ongoing dialogue with the prosecutor about the cooperation's scope and value.
For prescription-drug cases prosecuted under §841 — distinct from street-distribution §846 conspiracies — Ruan v. United States, 597 U.S. 450 (2022), is the controlling mens-rea decision. Ruan held that "§841's 'knowingly or intentionally' mens rea applies to the statute's 'except as authorized' clause" and that "[o]nce a defendant meets the burden of producing evidence that his or her conduct was 'authorized,' the Government must prove beyond a reasonable doubt that the defendant knowingly or intentionally acted in an unauthorized manner." Ruan, 597 U.S. at 454. The Court rejected the government's "objectively reasonable good-faith effort" standard. The case has significant implications for physicians and other prescribers charged under §846 conspiracy theories.
Guidelines, §3553(a), and BOP designation in drug cases
The Guidelines calculation in a federal drug case is governed by USSG §2D1.1. The base offense level is determined by the type and quantity of the controlled substance attributable to the defendant under §1B1.3 (relevant conduct), which sweeps in the foreseeable scope of co-conspirator conduct under Pinkerton principles. Specific offense characteristics add levels for features such as possession of a dangerous weapon (+2), use of violence (+2), maintaining premises for drug distribution (+2), distribution to a vulnerable victim or in a protected location (+2 to +4), and involvement of a minor in the offense (+2 to +6). The aggravating-role adjustment under §3B1.1 (+2 to +4) applies to organizers, leaders, managers, and supervisors; the mitigating-role adjustment under §3B1.2 (-2 to -4) applies to minor and minimal participants.
The minor-role amendment to the Guidelines (Amendment 794) expanded the class of defendants eligible for a mitigating-role reduction; the analysis focuses on the defendant's "average participant" comparison rather than a comparison to organizational leadership. Defense practice routinely involves briefing for a 2- or 3-level mitigating-role reduction for couriers, street-level distributors, and other peripheral participants.
After Chapter 3 adjustments (including acceptance of responsibility under §3E1.1, typically a 3-level reduction with the government's third-point motion) and the Chapter 4 criminal-history calculation, the court determines the Guidelines range, considers the 18 U.S.C. §3553(a) factors, and imposes a sentence under the post-Booker advisory framework. Federal parole was abolished in 1987; the sentence imposed is the sentence served, less good-time credit under 18 U.S.C. §3624(b) (up to 54 days per year) and First Step Act time credits under 18 U.S.C. §3632. A non-violent drug-conspiracy defendant who completes the BOP Residential Drug Abuse Program (RDAP) under 18 U.S.C. §3621(e)(2)(B) may earn up to a 12-month sentence reduction. RDAP eligibility is restricted to defendants with a documented substance-abuse problem and no statutory disqualifiers (most violence-related convictions and certain firearm enhancements disqualify).
Defense practice — pretrial through post-conviction
Federal drug-conspiracy defense divides into distinct phases. Pretrial: detention litigation under the Bail Reform Act, 18 U.S.C. §3142 (drug-trafficking cases carrying a 10-year-plus statutory maximum trigger the rebuttable-presumption analysis under §3142(e)(3)(A)); discovery under Rule 16, Brady, Giglio, and the Jencks Act; suppression motions under the Fourth and Fifth Amendments; motions challenging the §851 information; and motions to dismiss for grand jury defects or duplicity/multiplicity in the indictment.
Trial: the agreement-element analysis (was there a single conspiracy or multiple under Kotteakos?); the drug-quantity and drug-type proof under Apprendi/Alleyne; Pinkerton instructions and the scope-of-agreement question; withdrawal-from-conspiracy defenses; expert challenges on toxicology, chemistry, and drug-quantity extrapolation; and detailed special verdict forms preserving the Apprendi/Alleyne jury-fact requirements. In overdose-enhanced cases, Burrage's but-for causation requirement is the central battleground.
Sentencing: PSR objections under Rule 32(f); drug-quantity disputes; mitigating-role briefing under §3B1.2; safety-valve eligibility analysis and proffer; coordination with the government on any 5K1.1 motion; sentencing memorandum addressing the §3553(a) factors; downward variance arguments based on the defendant's background, addiction history, and rehabilitative steps; and a Bureau of Prisons designation recommendation (facility level, geography, and RDAP eligibility).
Post-conviction: direct appeal to the Fifth Circuit under Federal Rule of Appellate Procedure 4(b); §2255 motions; compassionate-release motions under 18 U.S.C. §3582(c)(1)(A); sentence-reduction motions under retroactive Guidelines amendments such as Amendment 821 (the 2023 zero-point and status-points amendment); and First Step Act §404 motions for retroactive application of the crack-cocaine quantity changes.
Reggie London (Texas State Bar #24043514) handles federal drug-conspiracy cases originating from arrests across the nine DFW counties L and L Law Group serves: Collin, Dallas, Denton, Tarrant, Rockwall, Kaufman, Ellis, Johnson, and Hunt. Cases in the Sherman Division of the Eastern District and the Dallas, Fort Worth, and Plano divisions of the Northern District are handled in-house; cases in other Texas federal districts are accepted on referral. Direct line (972) 370-5060; email info@landllawgroup.com.