S. 331 · 119th Congress · Senate

HALT Fentanyl Act

Enacted· Signed by President.
Introduced
Jan 30, 25
Passed Senate
Mar 14, 25
Passed House
Jun 12, 25
Sent to President
Jul 8, 25
Signed into Law
Jul 16, 25

Executive 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.

Previous Versions

00Jan 30, 2025

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.

Action Timeline

38
  1. JUL 16, 2025Library of Congress

    Became Public Law No: 119-26.

    119Yea
    26Nay
    0NV
  2. JUL 16, 2025Library of Congress

    Signed by President.

  3. JUL 08, 2025Library of Congress

    Presented to President.

  4. JUN 12, 2025House floor actions

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

  5. JUN 12, 2025House floor actions

    On passage Passed by the Yeas and Nays

    Roll Call #166

    321 - 104 (Roll no. 166). (text: 6/11/2025 CR H2625-2627)

    321Yea
    104Nay
    0NV
  6. JUN 12, 2025Library of Congress

    Passed/agreed to in House

    Roll Call #166

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

    321Yea
    104Nay
    0NV
  7. JUN 12, 2025House floor actions

    Considered as unfinished business

    (consideration: CR H2806)

  8. JUN 11, 2025House floor actions

    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.

  9. JUN 11, 2025House floor actions

    The previous question was ordered pursuant to the rule.

  10. JUN 11, 2025House floor actions

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

  11. JUN 11, 2025House floor actions

    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.

  12. JUN 11, 2025House floor actions

    Considered under the provisions of rule H

    Res. 489. (consideration: CR H2625-2633)

    2625Yea
    2633Nay
    0NV
  13. JUN 10, 2025House floor actions

    Rule H

    Res. 489 passed House.

  14. JUN 09, 2025House floor actions

    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.

  15. MAR 18, 2025House floor actions

    Held at the desk.

  16. MAR 18, 2025House floor actions

    Received in the House.

  17. MAR 14, 2025Senate

    Message on Senate action sent to the House.

  18. MAR 14, 2025Senate

    Passed Senate with an amendment by Yea-Nay Vote

    84 - 16. Record Vote Number: 127.

    84Yea
    16Nay
    0NV
  19. MAR 14, 2025Library of Congress

    Passed/agreed to in Senate

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

    84Yea
    16Nay
    0NV
  20. MAR 14, 2025Senate

    The committee substitute agreed to by Unanimous Consent.

  21. MAR 14, 2025Senate

    Considered by Senate

    (consideration: CR S1762-1765)

    1762Yea
    1765Nay
    0NV
  22. MAR 13, 2025Senate

    Considered by Senate

    (consideration: CR S1735)

  23. MAR 13, 2025Senate

    Cloture on the measure invoked in Senate by Yea-Nay Vote

    84 - 15. Record Vote Number: 124. (CR S1735)

    84Yea
    15Nay
    0NV
  24. MAR 11, 2025Senate

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

  25. MAR 11, 2025Senate

    Considered by Senate

    (consideration: CR S1659)

  26. MAR 10, 2025Senate

    Measure laid before Senate by motion.

  27. MAR 10, 2025Senate

    Motion to proceed to consideration of measure agreed to in Senate by Voice Vote

    (consideration: CR S1623)

  28. MAR 10, 2025Senate

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

  29. MAR 06, 2025Senate

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

    82Yea
    12Nay
    0NV
  30. MAR 06, 2025Senate

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

  31. MAR 05, 2025Senate

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

  32. MAR 04, 2025Senate

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

  33. MAR 04, 2025Senate

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

  34. MAR 03, 2025Senate

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

  35. MAR 03, 2025Library of Congress

    Committee on the Judiciary

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

  36. FEB 27, 2025Senate

    Committee on the Judiciary

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

  37. JAN 30, 2025Senate

    Read twice and referred to the Committee on the Judiciary.

  38. JAN 30, 2025Library of Congress

    Introduced in Senate

Committees

1

Judiciary Committee

ssju00

Referred: Mar 3, 2025

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