Politisphere

S. 331: HALT Fentanyl Act

A Senate bill (S.) in the 119th U.S. Congress.

Overview

Congress119th U.S. Congress (2025–2026)
TypeSenate bill (S.)
Originating chamberSenate
Introduced2025-01-30
SponsorSen. Cassidy, Bill [R-LA]
Policy areaCrime and Law Enforcement
Cosponsors20
Latest action2025-07-16 — Became Public Law No: 119-26.
Last updated2026-07-27

Summary

Official summary (Introduced in Senate, 2025-01-30):

Halt All Lethal Trafficking of Fentanyl Act or the HALT Fentanyl Act

This bill permanently places fentanyl-related substances as a class into schedule I of the Controlled Substances Act. A schedule I controlled substance is a drug, substance, or chemical that has a high potential for abuse; has no currently accepted medical value; and is subject to regulatory controls and administrative, civil, and criminal penalties under the Controlled Substances Act.

Under the bill, offenses involving fentanyl-related substances are triggered by the same quantity thresholds and subject to the same penalties as offenses involving fentanyl analogues (e.g., offenses involving 100 grams or more trigger a 10-year mandatory minimum prison term).

Additionally, the bill establishes a new, alternative registration process for certain schedule I research.

The bill also makes several other changes to registration requirements for conducting research with controlled substances, including

  • permitting a single registration for related research sites in certain circumstances,
  • waiving the requirement for a new inspection in certain situations, and
  • allowing a registered researcher to perform certain manufacturing activities with small quantities of a substance without obtaining a manufacturing registration.

Finally, the bill expresses the sense that Congress agrees with the interpretation of the Controlled Substances Act in United States v. McCray, a 2018 case decided by the U.S. District Court for the Western District of New York. In that case, the court held that butyryl fentanyl, a controlled substance, can be considered an analogue of fentanyl even though, under the Controlled Substances Act, the term controlled substance analogue specifically excludes a controlled substance.

Cosponsors (20)

NameParty / state
Martin Heinrich D NM (original cosponsor) 2025-01-30
Chuck Grassley R IA (original cosponsor) 2025-01-30
Roger Marshall R KS (original cosponsor) 2025-01-30
Todd Young R IN (original cosponsor) 2025-01-30
Steve Daines R MT (original cosponsor) 2025-01-30
Mike Rounds R SD (original cosponsor) 2025-01-30
Shelley Moore Capito R WV (original cosponsor) 2025-01-30
Eric Schmitt R MO (original cosponsor) 2025-01-30
John Kennedy R LA (original cosponsor) 2025-01-30
Ruben Gallego D AZ (original cosponsor) 2025-01-30
Margaret Wood Hassan D NH (original cosponsor) 2025-01-30
Catherine Cortez Masto D NV (original cosponsor) 2025-01-30
Jeanne Shaheen D NH (original cosponsor) 2025-01-30
Angus S. King, Jr. I ME (original cosponsor) 2025-01-30
Mark Kelly D AZ (original cosponsor) 2025-01-30
John Cornyn R TX (original cosponsor) 2025-01-30
Josh Hawley R MO 2025-02-03
Thom Tillis R NC 2025-02-03
Sen. Graham, Lindsey [R-SC] R SC 2025-02-03
Ted Cruz R TX 2025-02-03

Full text & official record

The official bill text, section-by-section summary, amendments, committee reports, and the complete legislative timeline for S. 331 are published by Congress on congress.gov.

View S. 331 on congress.gov →

Frequently asked questions

What is S. 331?

S. 331 is a Senate bill (S.) introduced in the 119th U.S. Congress, originating in the Senate. Official title: HALT Fentanyl Act.

Where can I read the full bill text?

The full text, cosponsors, amendments, and legislative status for S. 331 are available on congress.gov.

Bill data: congress.gov API (official congressional records).