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    HALT Fentanyl Act

    Type and Bill Number: S.331

    Congress Number: 119

    Status: Became Law

    Last Status Update: Wed, 16 Jul 2025

    Chamber: Senate

    Topics

    • Crime and Public Safety
    • Legal System and Law Enforcement

    Summary

    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.

    Sponsors

    • Marsha Blackburn
    • Katie Boyd Britt
    • Susan M. Collins
    • Shelley Moore Capito
    • John Cornyn
    • Bill Cassidy
    • Ted Cruz
    • Catherine Cortez Masto
    • Steve Daines
    • Joni Ernst
    • Lindsey Graham
    • Chuck Grassley
    • Ruben Gallego
    • Martin Heinrich
    • Margaret Wood Hassan
    • Cindy Hyde-Smith
    • Josh Hawley
    • James C. Justice
    • Mark Kelly
    • Angus S. King
    • John Kennedy
    • Mike Lee
    • Roger Marshall
    • David McCormick
    • Ashley Moody
    • Mike Rounds
    • Pete Ricketts
    • Jeanne Shaheen
    • Dan Sullivan
    • Eric Schmitt
    • Thomas Tillis
    • Todd Young