S. 331

119th Congress

Enacted

HALT Fentanyl Act

Sponsored byRepublican:Sen. Cassidy, Bill [R-LA]LA· Introduced 30 January 2025
Open on Congress.gov

31

Cosponsors

42

Actions

35

Amendments

1

Committees

—

Since introduced

Introduced
Committee
Passed Chamber
Passed Both
Enacted
Step 4 of 0
Latest action

Became Public Law No: 119-26.

16 July 2025·1 year ago

Summary

Public Law · Updated 27 January 2026

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.

Timeline

42 actions

  1. Became Public Law No: 119-26.

    16 July 2025 · President

  2. Signed by President.

    16 July 2025 · President

  3. Signed by President.

    16 July 2025 · BecameLaw

  4. Became Public Law No: 119-26.

    16 July 2025 · BecameLaw

  5. Presented to President.

    8 July 2025 · President

  6. Presented to President.

    8 July 2025 · Floor

  7. On passage Passed by the Yeas and Nays: 321 - 104 (Roll no. 166). (text: 6/11/2025 CR H2625-2627)

    12 June 2025 · Floor

  8. Considered as unfinished business. (consideration: CR H2806)

    12 June 2025 · Floor

  9. Motion to reconsider laid on the table Agreed to without objection.

    12 June 2025 · Floor

  10. Passed/agreed to in House: On passage Passed by the Yeas and Nays: 321 - 104 (Roll no. 166). (text: 6/11/2025 CR H2625-2627)

    12 June 2025 · Floor

  11. The previous question was ordered pursuant to the rule.

    11 June 2025 · Floor

  12. Rule provides for consideration of H.R. 884, H.R. 2056, H.R. 2096 and S. 331. The resolution provides for consideration of H.R. 884, H.R. 2056, H.R. 2096, and S. 331 under a closed rule with one hour of general debate for each bill. The resolution provides for one motion to recommit on H.R. 884, H.R. 2056, and H.R. 2096, and one motion to commit on S. 331.

    11 June 2025 · Floor

  13. DEBATE - The House proceeded with one hour of debate on S. 331.

    11 June 2025 · Floor

  14. Considered under the provisions of rule H. Res. 489. (consideration: CR H2625-2633)

    11 June 2025 · Floor

  15. POSTPONED PROCEEDINGS - At the conclusion of debate on S. 331, the Chair put the question on passage of the bill and by voice vote, announced that the ayes had prevailed. Mr. Pallone demanded the yeas and nays and the Chair postponed further proceedings until a time to be announced.

    11 June 2025 · Floor

  16. Rule H. Res. 489 passed House.

    10 June 2025 · Floor

  17. Rules Committee Resolution H. Res. 489 Reported to House. Rule provides for consideration of H.R. 884, H.R. 2056, H.R. 2096 and S. 331. The resolution provides for consideration of H.R. 884, H.R. 2056, H.R. 2096, and S. 331 under a closed rule with one hour of general debate for each bill. The resolution provides for one motion to recommit on H.R. 884, H.R. 2056, and H.R. 2096, and one motion to commit on S. 331.

    9 June 2025 · Floor

  18. Received in the House.

    18 March 2025 · Floor

  19. Held at the desk.

    18 March 2025 · Floor

  20. Passed/agreed to in Senate: Passed Senate with an amendment by Yea-Nay Vote. 84 - 16. Record Vote Number: 127.

    14 March 2025 · Floor

22 earlier actionsView all on Congress.gov

Sponsorship

31 cosponsors

Sponsor

Republican:Sen. Cassidy, Bill [R-LA]LA

Cosponsors

  • Democrat619%
  • Republican2477%
  • Independent13%

Classification

Policy area

Crime and Law Enforcement

Legislative subjects

Administrative law and regulatory proceduresDepartment of JusticeDrug trafficking and controlled substancesLicensing and registrationsResearch administration and funding

Committees

1

  • Judiciary Committee

    Senate · Standing

    • Referred To30 Jan 2025
    • Markup By27 Feb 2025
    • Reported By3 Mar 2025

Cosponsor momentum

Cumulative over time

Cosponsors grew from 16 on 30 January 2025 to 31 on 11 March 2025.

Amendments

35

  • SAMDT 1237Unknown

    To improve the bill.

    14 March 2025

  • SAMDT 1264Proposed

    13 March 2025

  • SAMDT 1265Proposed

    13 March 2025

  • SAMDT 1263Proposed

    13 March 2025

  • SAMDT 1262Proposed

    13 March 2025

  • SAMDT 1260Proposed

    13 March 2025

  • SAMDT 1259Proposed

    13 March 2025

  • SAMDT 1261Proposed

    13 March 2025

  • SAMDT 1258Proposed

    12 March 2025

  • SAMDT 1254Proposed

    12 March 2025

  • SAMDT 1250Proposed

    12 March 2025

  • SAMDT 1251Proposed

    12 March 2025

  • SAMDT 1255Proposed

    12 March 2025

  • SAMDT 1249Proposed

    12 March 2025

  • SAMDT 1257Proposed

    12 March 2025

  • SAMDT 1253Proposed

    12 March 2025

  • SAMDT 1252Proposed

    12 March 2025

  • SAMDT 1256Proposed

    12 March 2025

  • SAMDT 1248Proposed

    12 March 2025

  • SAMDT 1245Proposed

    12 March 2025

  • SAMDT 1247Proposed

    12 March 2025

  • SAMDT 1246Proposed

    12 March 2025

  • SAMDT 1238Proposed

    11 March 2025

  • SAMDT 1243Proposed

    11 March 2025

  • SAMDT 1242Proposed

    11 March 2025

10 more amendmentsView all on Congress.gov
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