S 331 · 119th Congress 2025–2027

HALT Fentanyl Act

Fact sheet

Latest action · Jul 16, 2025 Became Public Law No: 119-26.

Progress

Where this bill reached, and when. A stage with no date was not reached; one that failed a vote and later carried shows the date it carried.

  1. IntroducedJan 30, 2025
  2. Passed SenateMar 14, 2025
  3. Passed HouseJun 12, 2025
  4. To the PresidentJul 8, 2025
  5. Became lawJul 16, 2025

Summary

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

This act 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 act, 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 act establishes a new, alternative registration process for certain schedule I research.

The act 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 act 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.

Recorded votes 4

Newest first. Open one to see how every member voted.

Roll callQuestionResultDate
House 166Passed321–104Jun 12, 2025
Senate 127Bill Passed84–16Mar 14, 2025
Senate 124Cloture Motion Agreed to84–15Mar 13, 2025
Senate 110Cloture on the Motion to Proceed Agreed to82–12Mar 6, 2025

Cosponsors 31

Members who signed on, in the order they did. Signatures ran from Jan 30, 2025 to Mar 11, 2025, with 16 there on the day it was introduced.

SeatCosponsorSigned on
I-MEAngus S. King Jr.OriginalJan 30, 2025
D-NVCatherine Cortez MastoOriginalJan 30, 2025
R-IAChuck GrassleyOriginalJan 30, 2025
R-MOEric SchmittOriginalJan 30, 2025
D-NHJeanne ShaheenOriginalJan 30, 2025
R-TXJohn CornynOriginalJan 30, 2025
R-LAJohn KennedyOriginalJan 30, 2025
D-NHMargaret Wood HassanOriginalJan 30, 2025
D-AZMark KellyOriginalJan 30, 2025
D-NMMartin HeinrichOriginalJan 30, 2025
R-SDMike RoundsOriginalJan 30, 2025
R-KSRoger MarshallOriginalJan 30, 2025
D-AZRuben GallegoOriginalJan 30, 2025
R-WVShelley Moore CapitoOriginalJan 30, 2025
R-MTSteve DainesOriginalJan 30, 2025

Actions 38

Everything that happened, newest first.

  1. Jul 16, 2025Became Public Law No: 119-26.
  2. Jul 16, 2025Signed by President.
  3. Jul 8, 2025Presented to President.
  4. Jun 12, 2025Considered as unfinished business. (consideration: CR H2806)
  5. Jun 12, 2025Motion to reconsider laid on the table Agreed to without objection.

Amendments 35

Amendments offered to this bill.

AmendmentDescriptionOffered byStatus
SA 1231Recorded in Congress.gov (updated 2025-03-11)Peter Welch D-VTRecorded in Congress.gov (updated 2025-03-11)
SA 1232Recorded in Congress.gov (updated 2025-03-06)Margaret Wood Hassan D-NHRecorded in Congress.gov (updated 2025-03-06)
SA 1233Recorded in Congress.gov (updated 2025-03-11)Cory A. Booker D-NJRecorded in Congress.gov (updated 2025-03-11)
SA 1234Recorded in Congress.gov (updated 2025-03-11)Cory A. Booker D-NJRecorded in Congress.gov (updated 2025-03-11)
SA 1235Recorded in Congress.gov (updated 2025-03-11)Cory A. Booker D-NJRecorded in Congress.gov (updated 2025-03-11)
SA 1236Recorded in Congress.gov (updated 2025-03-11)Cory A. Booker D-NJRecorded in Congress.gov (updated 2025-03-11)
SA 1237To improve the bill.Chuck Grassley R-IAConsidered by Senate. (consideration: CR S1765)
SA 1238Recorded in Congress.gov (updated 2025-03-10)Ben Ray Luján D-NMRecorded in Congress.gov (updated 2025-03-10)
SA 1239Recorded in Congress.gov (updated 2025-03-10)Lisa Blunt Rochester D-DERecorded in Congress.gov (updated 2025-03-10)
SA 1240Recorded in Congress.gov (updated 2025-03-10)Catherine Cortez Masto D-NVRecorded in Congress.gov (updated 2025-03-10)
SA 1241Recorded in Congress.gov (updated 2025-03-10)Catherine Cortez Masto D-NVRecorded in Congress.gov (updated 2025-03-10)
SA 1242Recorded in Congress.gov (updated 2025-03-10)Christopher A. Coons D-DERecorded in Congress.gov (updated 2025-03-10)
SA 1243Recorded in Congress.gov (updated 2025-03-10)Christopher A. Coons D-DERecorded in Congress.gov (updated 2025-03-10)
SA 1244Recorded in Congress.gov (updated 2025-03-10)Rick Scott R-FLRecorded in Congress.gov (updated 2025-03-10)
SA 1245Recorded in Congress.gov (updated 2025-03-11)Jeff Merkley D-ORRecorded in Congress.gov (updated 2025-03-11)
SA 1246Recorded in Congress.gov (updated 2025-03-11)Jeff Merkley D-ORRecorded in Congress.gov (updated 2025-03-11)
SA 1247Recorded in Congress.gov (updated 2025-03-11)James E. Risch R-IDRecorded in Congress.gov (updated 2025-03-11)
SA 1248Recorded in Congress.gov (updated 2025-03-11)John W. Hickenlooper D-CORecorded in Congress.gov (updated 2025-03-11)
SA 1249Recorded in Congress.gov (updated 2025-03-11)Raphael G. Warnock D-GARecorded in Congress.gov (updated 2025-03-11)
SA 1250Recorded in Congress.gov (updated 2025-03-11)Richard J. Durbin D-ILRecorded in Congress.gov (updated 2025-03-11)
SA 1251Recorded in Congress.gov (updated 2025-03-11)Richard J. Durbin D-ILRecorded in Congress.gov (updated 2025-03-11)
SA 1252Recorded in Congress.gov (updated 2025-03-11)Richard J. Durbin D-ILRecorded in Congress.gov (updated 2025-03-11)
SA 1253Recorded in Congress.gov (updated 2025-03-11)Richard J. Durbin D-ILRecorded in Congress.gov (updated 2025-03-11)
SA 1254Recorded in Congress.gov (updated 2025-03-11)Richard J. Durbin D-ILRecorded in Congress.gov (updated 2025-03-11)
SA 1255Recorded in Congress.gov (updated 2025-03-11)Josh Hawley R-MORecorded in Congress.gov (updated 2025-03-11)
SA 1256Recorded in Congress.gov (updated 2025-03-11)Josh Hawley R-MORecorded in Congress.gov (updated 2025-03-11)
SA 1257Recorded in Congress.gov (updated 2025-03-11)Mazie K. Hirono D-HIRecorded in Congress.gov (updated 2025-03-11)
SA 1258Recorded in Congress.gov (updated 2025-03-13)Raphael G. Warnock D-GARecorded in Congress.gov (updated 2025-03-13)
SA 1259Recorded in Congress.gov (updated 2025-03-12)Dan Sullivan R-AKRecorded in Congress.gov (updated 2025-03-12)
SA 1260Recorded in Congress.gov (updated 2025-03-12)John Cornyn R-TXRecorded in Congress.gov (updated 2025-03-12)
SA 1261Recorded in Congress.gov (updated 2025-03-12)John Thune R-SDRecorded in Congress.gov (updated 2025-03-12)
SA 1262Recorded in Congress.gov (updated 2025-03-12)John Thune R-SDRecorded in Congress.gov (updated 2025-03-12)
SA 1263Recorded in Congress.gov (updated 2025-03-12)John Thune R-SDRecorded in Congress.gov (updated 2025-03-12)
SA 1264Recorded in Congress.gov (updated 2025-03-12)John Thune R-SDRecorded in Congress.gov (updated 2025-03-12)
SA 1265Recorded in Congress.gov (updated 2025-03-12)John Thune R-SDRecorded in Congress.gov (updated 2025-03-12)

Related bills 2

Companion bills and other measures the record links to this one.

Subjects

Assigned by the Library of Congress. Policy area: Crime and Law Enforcement.

Text 4

Each version as it was printed, newest first.

  1. —Enrolled Bill
  2. Mar 14, 2025Engrossed in Senate
  3. Mar 3, 2025Reported to Senate
  4. Jan 30, 2025Introduced in Senate

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