HALT Fentanyl Act

What this measure contains

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.

The latest Congressional Research Service summary in the bill's GovInfo status record, or its official title when no summary has been published. Amendments can change the wording; read a specific version for its complete provisions.

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Bill text and versions

Drafts can change as a measure moves through Congress. Check the version attached to a recorded vote.

• Enrolled Bill · Official document ↗
• Engrossed in Senate · Official document ↗· Mar 14, 2025
• Reported to Senate · Official document ↗· Mar 3, 2025
• Introduced in Senate · Official document ↗· Jan 30, 2025
• Public Law · Official document ↗· Jul 16, 2025

Legislative path

Each stage below is a House or Senate floor decision: every recorded roll call on this measure, plus passage by voice vote or unanimous consent, which records no individual votes. Each stage shows the latest version published before that day; the chamber may have voted on an amended text. Roll calls name every member. A member's row follows their votes, and a highlighted vote marks where they voted for advancing the measure at one stage and against it at another (passage, cloture, motions to proceed, agreeing to the other chamber's version). Amendments and motions such as recommit or table don't count as a change, because an aye there isn't a vote for the measure.

1. Introduced in Senate
2. Reported to Senate
3. Engrossed in Senateby Senate passage
4. Enrolled Bill
5. Public Law

Decision stages

1. Mar 6, 2025 · Senate

   Senate cloture to proceed on Reported to Senate: Cloture on the Motion to Proceed Agreed to

   82 aye · 12 no · 6 not voting · Source roll call

2. Mar 13, 2025 · Senate

   Senate cloture on Reported to Senate: Cloture Motion Agreed to

   84 aye · 15 no · 1 not voting · Source roll call

3. Mar 14, 2025 · Senate

   Senate passage on Reported to Senate: Bill Passed, reported as Engrossed in Senate

   84 aye · 16 no · Source roll call

4. Jun 12, 2025 · House

   House passage on Engrossed in Senate: Passed

   321 aye · 104 no · 7 not voting · Source roll call

Senate members along the path

House members along the path

Aye yea or aye · No nay or no · Present · NV not voting · Changed reversed on advancing the measure

Members are identified by the Bioguide ID in each roll call, not by name. Not voting is not a no vote; a blank cell means the member wasn't listed for that roll call.Congress.gov actions ↗

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Legislative history

1. Jan 30, 2025

   Introduced in Senate

2. Jan 30, 2025

   Read twice and referred to the Committee on the Judiciary.

3. Feb 27, 2025

   Committee on the Judiciary. Ordered to be reported with an amendment in the nature of a substitute favorably.

4. Mar 3, 2025

   Committee on the Judiciary. Reported by Senator Grassley with an amendment in the nature of a substitute. Without written report.

5. Mar 3, 2025

   Placed on Senate Legislative Calendar under General Orders. Calendar No. 18.

6. Mar 4, 2025

   Motion to proceed to consideration of measure made in Senate. (CR S1488)

7. Mar 4, 2025

   Cloture motion on the motion to proceed to the measure presented in Senate. (CR S1488)

8. Mar 5, 2025

   Motion to proceed to measure considered in Senate. (CR S1521)

9. Mar 6, 2025

   Motion to proceed to measure considered in Senate. (CR S1596)

10. Mar 6, 2025

    Cloture on the motion to proceed to the measure invoked in Senate by Yea-Nay Vote. 82 - 12. Record Vote Number: 110. (CR S1596)

11. Mar 10, 2025

    Motion to proceed to measure considered in Senate. (CR S1623)

12. Mar 10, 2025

    Motion to proceed to consideration of measure agreed to in Senate by Voice Vote. (consideration: CR S1623)

13. Mar 10, 2025

    Measure laid before Senate by motion.

14. Mar 11, 2025

    Considered by Senate. (consideration: CR S1659)

15. Mar 11, 2025

    Cloture motion on the measure presented in Senate. (CR S1659)

16. Mar 13, 2025

    Cloture on the measure invoked in Senate by Yea-Nay Vote. 84 - 15. Record Vote Number: 124. (CR S1735)

17. Mar 13, 2025

    Considered by Senate. (consideration: CR S1735)

18. Mar 14, 2025

    Considered by Senate. (consideration: CR S1762-1765)

19. Mar 14, 2025

    The committee substitute agreed to by Unanimous Consent.

20. Mar 14, 2025

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

21. Mar 14, 2025

    Passed Senate with an amendment by Yea-Nay Vote. 84 - 16. Record Vote Number: 127.

22. Mar 14, 2025

    Message on Senate action sent to the House.

23. Mar 18, 2025

    Received in the House.

24. Mar 18, 2025

    Held at the desk.

25. Jun 9, 2025

    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.

26. Jun 10, 2025

    Rule H. Res. 489 passed House.

27. Jun 11, 2025

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

28. Jun 11, 2025

    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.

29. Jun 11, 2025

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

30. Jun 11, 2025

    The previous question was ordered pursuant to the rule.

31. Jun 11, 2025

    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.

32. Jun 12, 2025

    Considered as unfinished business. (consideration: CR H2806)

33. Jun 12, 2025

    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)

34. Jun 12, 2025

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

35. Jun 12, 2025

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

36. Jul 8, 2025

    Presented to President.

37. Jul 16, 2025

    Signed by President.

38. Jul 16, 2025

    Became Public Law No: 119-26.

Bill sponsors