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DETECT Fentanyl and Xylazine Act of 2024

Public Law 118-186 · H.R. 8663 · 118th Congress · began in the House

Signed by Joe Biden (D) on Dec 23, 2024 · Science, Technology, Communications

Sponsor: Rep. Nick LaLota (R-NY-1)

Cosponsors (2): Rep. Luis Correa,

Passage votesYeaNay

  • HouseRecorded vote: 404 yea, 1 nay404–1
  • SenateUnanimous consent
Data notes

The final version of the law, as each chamber passed it. A chamber that passed it by voice vote or unanimous consent has no count. “Method not stated” means the record does not say how the chamber voted. Where the record has a member-by-member vote, the “Who voted for it” section shows who voted yea.

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Summary

The Congressional Research Service’s plain-language summary of what the law does.

This act provides statutory authority for the Department of Homeland Security's Science and Technology Directorate to take certain actions to support the detection of drugs such as fentanyl and xylazine.

Specifically, the act provides statutory authority for the directorate's research and development efforts to improve drug detection equipment and reference libraries for law enforcement agencies, including with respect to portable equipment, equipment that can analyze complex samples, and technology that uses artificial intelligence or other techniques to detect new substances. The act additionally requires the directorate to follow certain standards and rely on certain information from the National Institute of Standards and Technology and the Drug Enforcement Administration, respectively, regarding these efforts.

Who voted for it

Every House member of the 118th Congress on the ideology compass. Highlighted: the 404 who voted yea on final passage. Faded: everyone else, including those who voted nay, did not vote, or had not yet taken office.

404 yea1 nay24 present or did not vote

ProEstablishmentAnti
Economic left–right
More liberalMore conservative

Democrats who voted yea(196)

Republicans who voted yea(208)

Data notes

The House’s recorded vote on the final version of the law (roll call 1232 in Voteview), matched to the vote the record cites and checked against its totals. Positions are each member’s DW-NOMINATE score for that Congress, as on the Ideology page; left to right is more liberal to more conservative. Paired and announced yea votes count as yea. Lists follow the compass, most liberal first. A name links to a profile only for members of the current Congress. A law passed by voice vote or unanimous consent has no member list, and neither does a vote Voteview has not yet recorded.

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Committees

The committees the bill was sent to, and what each did with it.

Data notes

A committee links to its page only where it exists in the current Congress; older and renamed committees are named without a link.

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Related bills

1 bill the Library of Congress relates to this one.

  • S. 5426Identical bill

    DETECT Fentanyl and Xylazine Act of 2024

Data notes

Related bills are identified by the Congressional Research Service, the House and the Senate: companion and identical bills, bills with similar text, bills that were folded into this law, and rules that brought it to the floor. A bill that is itself a public law in this site’s data links here; the others link to Congress.gov.

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Timeline

From introduction to signing, newest first: the committees, the floor and the president. 27 actions.

  1. Dec 23, 2024Became lawBecame law · Became Public Law No: 118-186.
  2. Became lawBecame law · Signed by President.
  3. FloorFloor · Presented to President.
  4. Dec 18, 2024Resolving differencesResolving differences · Motion to reconsider laid on the table Agreed to without objection.
  5. Resolving differencesResolving differences · On motion that the House suspend the rules and agree to the Senate amendments Agreed to by the Yeas and Nays: (2/3 required): 404 - 1 (Roll no. 514).House roll call 514
  6. Resolving differencesResolving differences · At the conclusion of debate, the Yeas and Nays were demanded and ordered. Pursuant to the provisions of clause 8, rule XX, the chair announced that further proceedings on the motion would be postponed.
  7. Resolving differencesResolving differences · Mr. Green (TN) moved that the House suspend the rules and agree to the Senate amendments.
  8. FloorFloor · DEBATE - The House proceeded with forty minutes of debate on the motion to suspend the rules and agree to the Senate amendments to H.R. 8663.
  9. OtherOther · Resolving differences -- House actions: On motion that the House suspend the rules and agree to the Senate amendments Agreed to by the Yeas and Nays: (2/3 required): 404 - 1 (Roll no. 514).House roll call 514
  10. Dec 13, 2024FloorFloor · Message on Senate action sent to the House.
  11. Dec 12, 2024FloorFloor · Passed Senate with an amendment and an amendment to the Title by Unanimous Consent.
  12. FloorFloor · Measure laid before Senate by unanimous consent.
  13. CommitteeCommittee · Senate Committee on Homeland Security and Governmental Affairs discharged by Unanimous Consent.
  14. Sep 10, 2024CommitteeCommittee · Received in the Senate and Read twice and referred to the Committee on Homeland Security and Governmental Affairs.
  15. Sep 9, 2024FloorFloor · Motion to reconsider laid on the table Agreed to without objection.
  16. FloorFloor · On motion to suspend the rules and pass the bill Agreed to by voice vote.
  17. FloorFloor · DEBATE - The House proceeded with forty minutes of debate on H.R. 8663.
  18. FloorFloor · Considered under suspension of the rules.
  19. FloorFloor · Mr. Gimenez moved to suspend the rules and pass the bill.
  20. Aug 23, 2024CalendarCalendar · Placed on the Union Calendar, Calendar No. 531.
  21. CommitteeCommittee · Reported by the Committee on Homeland Security. H. Rept. 118-634.
  22. Jun 12, 2024CommitteeCommittee · Ordered to be Reported by Voice Vote.
  23. CommitteeCommittee · Committee Consideration and Mark-up Session Held
  24. CommitteeCommittee · Subcommittee on Emergency Management and Technology Discharged
  25. Jun 7, 2024CommitteeCommittee · Referred to the Subcommittee on Emergency Management and Technology.
  26. CommitteeCommittee · Referred to the House Committee on Homeland Security.
  27. IntroducedIntroduced · Introduced in House
Data notes

Every action the Library of Congress lists for the bill, from introduction to signing, plus the dated committee hearings. The source lists many steps twice (the chamber’s own entry and the Library of Congress copy, or a presidential and a became-law entry with the same words); those are shown once. Amendments are listed in their own section.

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Amendments

2 amendments offered to the bill, with the last recorded step of each.

  • S.Amdt. 3330SenateSen. John CornynR-TX· offered Dec 12, 2024Agreed to

    To amend the title.

    Dec 12, 2024: Amendment SA 3330 agreed to in Senate by Unanimous Consent.

    Agreed to

  • S.Amdt. 3329SenateSen. John CornynR-TX· offered Dec 12, 2024Agreed to

    In the nature of a substitute.

    Dec 12, 2024: Amendment SA 3329 agreed to in Senate by Unanimous Consent.

    Agreed to
Data notes

Amendments offered to this bill in either chamber, as the Library of Congress records them: each with a status read from its last recorded step: agreed to, rejected, withdrawn, ruled out of order, fell with another amendment, or offered with no vote recorded (most Senate amendments are only ever offered). The wording of each amendment is the source’s. Amendments to amendments and amendments to other bills are not listed.

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Official record

The bill’s full text is on Congress.gov. Data through Oct 7, 2026.