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HALT Fentanyl Act (S. 331)

Enacted
Introduced 1/30/2025•119th Congress•Senate

Latest Action

Became Public Law No: 119-26.

7/16/2025

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.

Public Law • 7/17/2025

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Topics & Subjects

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

Amendments (35)

This bill has 35 amendments proposed or adopted.

View all amendments on Congress.gov

Related Federal Spending

Sponsor & Cosponsors (32)

Party Breakdown

6
Democrats
25
Republicans
1
Independents

Sponsor

S[
Sen. Cassidy, Bill [R-LA]

Republican • LA

Sponsored 1/30/2025

Cosponsors (31)

S[
Sen. Heinrich, Martin [D-NM]

D-NM

Joined 1/30/2025

S[
Sen. Grassley, Chuck [R-IA]

R-IA

Joined 1/30/2025

S[
Sen. Marshall, Roger [R-KS]

R-KS

Joined 1/30/2025

S[
Sen. Young, Todd [R-IN]

R-IN

Joined 1/30/2025

S[
Sen. Daines, Steve [R-MT]

R-MT

Joined 1/30/2025

S[
Sen. Rounds, Mike [R-SD]

R-SD

Joined 1/30/2025

Enacted into Law

Public Law 119-26

View on Congress.gov

Bill Journey

Originated in the Senate

Introduced

January 30, 2025

Committee Review

February 27, 2025

Floor Debate

March 4, 2025

Passed Chamber

June 10, 2025

Other Chamber

March 14, 2025

President

July 8, 2025

Enacted into Law

July 16, 2025

Became Public Law No: 119-26.

Details

Bill TypeS
Current StatusEnacted
Cosponsors31

Sources and method

· Record updated Aug 10, 2026
  • Congress.govLibrary of Congress
    Status, actions, sponsors, cosponsors, committees and text
    Record updated Aug 10, 2026 · Loaded Nov 1, 2026, 4:06 PM ET
  • CRS bill summaryCongressional Research Service, via Congress.gov
    Official summary
    Summary of the “Public Law” version, Jul 17, 2025 · Loaded Nov 1, 2026, 4:06 PM ET
  • House roll-call votesOffice of the Clerk, U.S. House of Representatives
    Roll-call results on this bill
    Latest roll call Jun 12, 2025 · Loaded Nov 1, 2026, 4:06 PM ET
  • Roll-call results on this bill
    Latest roll call Mar 14, 2025 · Loaded Nov 1, 2026, 4:06 PM ET
  • CBO cost estimatesCongressional Budget Office
    Cost estimates
    Latest estimate Mar 10, 2025 · Loaded Nov 1, 2026, 4:06 PM ET
  • USAspending.govU.S. Department of the Treasury
    Related Federal Spending section
  • FEC filingsFederal Election Commission
    Funding & Lobbying section
  • Lobbying disclosures (LDA)Secretary of the Senate and Clerk of the House
    Funding & Lobbying section

All sources: Public domain (17 U.S.C. § 105) · Method: Data sources → · Campaign finance →

AI-written text on this page is labeled where it appears. It is written from the sources above and is not a source itself. How we analyze data →

Dates shown where the source reports one. “Loaded” is when CIV.IQ last fetched the record.