United States · Law · S
S. 331 (119th)
HALT Fentanyl Act
Introduced
30 January 2025
Last action
—
Status
Became Public Law No: 119-26.
Sponsors
—
Subjects
Discovery layer
Source updated
10 August 2026
Summary
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.
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Timeline
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Votes
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Versions
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Documents
7 official files
Enrolled Bill
Enrolled Bill
Enrolled Bill · EN
Public Law
summary · EN · 17 July 2025
Public Law
Public Law · EN · 16 July 2025
Engrossed in Senate
Engrossed in Senate · EN · 14 March 2025
Reported to Senate
Reported to Senate · EN · 3 March 2025
Introduced in Senate
Introduced in Senate · EN · 30 January 2025
Introduced in Senate
summary · EN · 30 January 2025
Sponsors
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Related records
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Sources
PoliticalRepo is an index and interpretation layer, not the authoritative legal source.
- Official source: https://www.congress.gov/bill/119th-congress/senate-bill/331
- Open data entity: https://api.congress.gov/v3/bill/119/s/331