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S 331 Became law

Places all fentanyl-related substances under Schedule I of the Controlled Substances Act by defining them by chemical structure, and adjusts research registration rules for schedule I drugs.

Official title: HALT Fentanyl Act

Outcome Public Law 119-26
Timeline each lane is a chamber; dates pull from congress.gov actions
House
Received 18-MAR-2025
On the calendar 09-JUN-2025
Passed 12-JUN-2025
Senate
Introduced 30-JAN-2025
Referred 30-JAN-2025
Approved by committee 27-FEB-2025
Reported 03-MAR-2025
On the calendar 03-MAR-2025
Passed 14-MAR-2025
President
Presented 08-JUL-2025
Signed 16-JUL-2025
Became law 16-JUL-2025
Key points
  • Defines a fentanyl-related substance by structural modifications to the fentanyl molecule, and schedules any such substance in Schedule I unless it is already controlled or listed elsewhere
  • Lets practitioners begin schedule I research after notifying the Attorney General, with a 30-day wait for those already registered and a 45-day deadline for action on new applicants
  • Allows a single registration for related research sites in the same city or county, and skips a new inspection when a researcher adds a substance in the same or a higher schedule
  • Raises federal penalties for fentanyl-related substances by adding them to the existing penalty provisions for fentanyl analogues, and requires the Attorney General to issue implementing rules within 6 months
AI-generated from the Public Law text of 16-JUL-2025 · verify · report an error
Official CRS summary

Current. The Congressional Research Service's summary covers the bill's latest wording (Public Law, 17-JUL-2025).

CRS is the Library of Congress's nonpartisan research office. Read it on congress.gov
Committee referrals (1) Policy area

Crime and Law Enforcement

Sponsor Bill Cassidy (R-LA) Cosponsors · 31
■ 24 R■ 6 D■ 1 I
1 Independent