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S. 545
U.S. Senate•Senate Floor Calendar
Summary
S. 545, the Combating Illicit Xylazine Act, was introduced in the Senate on Feb 12, 2025 by Sen. Catherine Cortez Masto (D) with 35 co-sponsors. It last saw action on Apr 15, 2026: Placed on Senate Legislative Calendar under General Orders. Calendar No. 372.
Record
Text
S. 545 has 35 co-sponsors.
sb545/introduced-in-senate.txt119 S545 IS: Combating Illicit Xylazine ActU.S. Senate2025-02-12text/xmlENPursuant to Title 17 Section 105 of the United States Code, this file is not subject to copyright protection and is in the public domain.II 119th CONGRESS 1st Session S. 545 IN THE SENATE OF THE UNITED STATES February 12, 2025 Ms. Cortez Masto (for herself, Mr. Grassley , Ms. Hassan , Mrs. Gillibrand , Mrs. Hyde-Smith , Ms. Cantwell , Mr. Scott of Florida , Mrs. Shaheen , Ms. Klobuchar , Mrs. Britt , Mrs. Capito , Mr. Young , Mr. Kelly , Mr. Kaine , Mr. Risch , Ms. Rosen , Mr. Blumenthal , Mr. Luján , and Mr. Wicker ) introduced the following bill; which was read twice and referred to the Committee on the Judiciary A BILLTo prohibit certain uses of xylazine, and for other purposes.1.Short titleThis title may be cited as the Combating Illicit Xylazine Act .2.Definitions(a)In generalIn this title, the term xylazine has the meaning given the term in paragraph (60) of section 102 of the Controlled Substances Act, as added by subsection (b) of this section.(b)Controlled substances actSection 102 of the Controlled Substances Act ( 21 U.S.C. 802 ) is amended by adding at the end the following:(60)The term xylazine means the substance xylazine, including its salts, isomers, and salts of isomers whenever the existence of such salts, isomers, and salts of isomers is possible..3.Adding xylazine to schedule IIISchedule III of section 202(c) of the Controlled Substances Act ( 21 U.S.C. 812 ) is amended by adding at the end the following:(f)Unless specifically excepted or unless listed in another schedule, any material, compound, mixture, or preparation which contains any quantity of xylazine..4.Amendments(a)AmendmentSection 102 of the Controlled Substances Act ( 21 U.S.C. 802 ) is amended by striking paragraph (27) and inserting the following:(27)(A)Except as provided in subparagraph (B), the term ultimate user means a person who has lawfully obtained, and who possesses, a controlled substance for the use by the person or for the use of a member of the household of the person or for an animal owned by the person or by a member of the household of the person.(B)(i)In the case of xylazine, other than for a drug product approved under subsection (b) or (j) of section 505 of the Federal Food, Drug, and Cosmetic Act ( 21 U.S.C. 355 ), the term ultimate user means a person—(I)to whom xylazine was dispensed by—(aa)a veterinarian registered under this Act; or(bb)a pharmacy registered under this Act pursuant to a prescription of a veterinarian registered under this Act; and(II)who possesses xylazine for—(aa)an animal owned by the person or by a member of the household of the person;(bb)an animal under the care of the person;(cc)use in government animal-control programs authorized under applicable Federal, State, Tribal, or local law; or(dd)use in wildlife programs authorized under applicable Federal, State, Tribal, or local law.(ii)In this subparagraph, the term person includes—(I)a government agency or business where animals are located; and(II)an employee or agent of an agency or business acting within the scope of their employment or agency..(b)FacilitiesAn entity that manufactures xylazine, as of the date of enactment of this Act, shall not be required to make capital expenditures necessary to install the security standard required of schedule III of the Controlled Substances Act ( 21 U.S.C. 801 et seq. ) for the purposes of manufacturing xylazine.(c)LabelingThe requirements related to labeling, packaging, and distribution logistics of a controlled substance in schedule III of section 202(c) of the Controlled Substances Act ( 21 U.S.C. 812(c) ) shall not take effect for xylazine until the date that is 1 year after the date of enactment of this Act.(d)Practitioner registrationThe requirements related to practitioner registration, inventory, and recordkeeping of a controlled substance in schedule III of section 202(c) of the Controlled Substances Act ( 21 U.S.C. 812(c) ) shall not take effect for xylazine until the date that is 60 days after the date of enactment of this Act. A practitioner that has applied for registration during the 60-day period beginning on the date of enactment of this Act may continue their lawful activities until such application is approved or denied.(e)Manufacturer transitionThe Food and Drug Administration and the Drug Enforcement Administration shall facilitate and expedite the relevant manufacturer submissions or applications required by the placement of xylazine on schedule III of section 202(c) of the Controlled Substances Act ( 21 U.S.C. 812(c) ).(f)ClarificationNothing in this title, or the amendments made by this title, shall be construed to require the registration of an ultimate user of xylazine under the Controlled Substances Act ( 21 U.S.C. 801 et seq. ) in order to possess xylazine in accordance with subparagraph (B) of section 102(27) of that Act ( 21 U.S.C. 802(27) ), as added by subsection (a) of this section.5.Arcos trackingSection 307(i) of the Controlled Substances Act ( 21 U.S.C. 827(i) ) is amended—(1)in the matter preceding paragraph (1)—(A)by inserting or xylazine after gamma hydroxybutyric acid ;(B)by inserting or 512 after section 505 ; and(C)by inserting respectively, after the Federal Food, Drug, and Cosmetic Act, ; and(2)in paragraph (6), by inserting or xylazine after gamma hydroxybutyric acid .6.Sentencing CommissionPursuant to its authority under section 994(p) of title 28, United States Code, the United States Sentencing Commission shall review and, if appropriate, amend its sentencing guidelines, policy statements, and official commentary applicable to persons convicted of an offense under section 401 of the Controlled Substances Act ( 21 U.S.C. 841 ) or section 1010 of the Controlled Substances Import and Export Act ( 21 U.S.C. 960 ) to provide appropriate penalties for offenses involving xylazine that are consistent with the amendments made by this title. In carrying out this section, the Commission should consider the common forms of xylazine as well as its use alongside other scheduled substances.7.Report to Congress on xylazine(a)Initial reportNot later than 18 months after the date of the enactment of this Act, the Attorney General, acting through the Administrator of the Drug Enforcement Administration and in coordination with the Commissioner of Food and Drugs, shall submit to Congress a report on the prevalence of illicit use of xylazine in the United States and the impacts of such use, including—(1)where the drug is being diverted;(2)where the drug is originating; and(3)whether any analogues to xylazine, or related or derivative substances, exist and present a substantial risk of abuse.(b)Additional reportNot later than 4 years after the date of the enactment of this Act, the Attorney General, acting through the Administrator of the Drug Enforcement Administration and in coordination with the Commissioner of Food and Drugs, shall submit to Congress a report updating Congress on the prevalence and proliferation of xylazine trafficking and misuse in the United States.
Tracker
The tracker indicates the progress of this legislation as it moves through the legislative process.
- Introduced2025-02-12
- Passed Senate
- Passed House
- Conference
- To President
- Became Law
CRS Summary
The summaries are the Congressional Research Service’s, one per stage. Read them in full.
Reported to Senate Apr 15, 2026
sb545/reported-to-senate.mdShown Here:
Reported to Senate (04/15/2026)
Combating Illicit Xylazine Act
This bill regulates xylazine under the Controlled Substances Act (CSA).
Xylazine, also known as tranq, is a nonopioid sedative and pain reliever that is approved for use in animals. Recently, the Drug Enforcement Administration (DEA) has reported an increase in trafficking of fentanyl mixed with xylazine.
This bill adds xylazine, including its salts, isomers, and salts of isomers, to schedule III of the CSA. Schedule III controlled substances, including anabolic steroids, buprenorphine, and ketamine, have less potential for abuse than a schedule I or II substance, have a currently accepted medical use, and have low or moderate risk of dependence if abused.
Under the bill, manufacturing, distributing, or dispensing xylazine, or possessing with intent to manufacture, distribute, or dispense xylazine for illicit use is subject to criminal penalties under the CSA. The bill also requires xylazine transactions to be tracked in the drug reporting system maintained by the DEA.
The bill exempts from registration under the CSA persons and entities that possess xylazine (1) lawfully dispensed by a veterinarian or pharmacy and (2) for an animal or for use in certain animal-control or wildlife programs.
The bill also exempts xylazine manufacturers from the CSA's physical security requirements.
Finally, the bill requires the DEA, in coordination with the Department of Health and Human Services (HHS), to provide Congress with a report on how the agencies previously determined whether xylazine should be a controlled substance, including the full text of HHS's recommendations to the DEA for scheduling xylazine.
Sponsors
Sen. Catherine Cortez Masto (D) sponsors S. 545, and 35 members have co-sponsored it, 18 of them from the day it was introduced.

Sen. · D–NV · Sponsor
Introduced Feb 12, 2025

Sen. · D–CT · Co-sponsor
Joined Feb 12, 2025 · Original

Sen. · R–AL · Co-sponsor
Joined Feb 12, 2025 · Original

Sen. · D–WA · Co-sponsor
Joined Feb 12, 2025 · Original

Sen. · R–WV · Co-sponsor
Joined Feb 12, 2025 · Original

Sen. · D–NY · Co-sponsor
Joined Feb 12, 2025 · Original

Sen. · R–IA · Co-sponsor
Joined Feb 12, 2025 · Original

Sen. · D–NH · Co-sponsor
Joined Feb 12, 2025 · Original

Sen. · R–MS · Co-sponsor
Joined Feb 12, 2025 · Original

Sen. · D–VA · Co-sponsor
Joined Feb 12, 2025 · Original
Committees
S. 545 went before 1 committee: Judiciary.
Actions
S. 545 has taken 5 actions since Feb 12, 2025, the latest on Apr 15, 2026.
| Chamber | Action | |||
|---|---|---|---|---|
Apr 15, 2026 | Senate | Committee on the Judiciary. Reported by Senator Grassley with an amendment in the nature of a substitute. Without written report. | ||
Apr 15, 2026 | Senate | Placed on Senate Legislative Calendar under General Orders. Calendar No. 372. | ||
Mar 26, 2026 | Senate | Committee on the Judiciary. Ordered to be reported with an amendment in the nature of a substitute favorably.Judiciary Committee | ||
Feb 12, 2025 | Senate | Read twice and referred to the Committee on the Judiciary.Judiciary Committee | ||
Feb 12, 2025 | — | Introduced in Senate |
Votes
S. 545 has not gone to a roll call.
Related bills
1 bill is related to S. 545.
Titles
S. 545 goes by 4 titles, 2 of them short titles.
- Combating Illicit Xylazine Act — Display Title
- Combating Illicit Xylazine Act — Short Title(s) as Reported to Senate
- Combating Illicit Xylazine Act — Short Title(s) as Introduced
- A bill to prohibit certain uses of xylazine, and for other purposes. — Official Title as Introduced
Lobbying
6 clients hired 6 firms and 18 registered lobbyists who named S. 545 in 21 quarterly filings, 2025 to 2026. Reported under the Lobbying Disclosure Act; a filing’s income covers everything its registrant worked that quarter, so the amounts below are the filings’, not this bill’s.
Filed under Law Enforcement/Crime/Criminal Justice, Labor Issues/Antitrust/Workplace, Civil Rights/Civil Liberties, Health Issues, Constitution, Intelligence, Trucking/Shipping, Budget/Appropriations.
Clients
Who paid to be heard, by how many filings named the bill.
| Client | Business | State | Firms | Filings | Reported |
|---|---|---|---|---|---|
| PEACE OFFICERS RESEARCH ASSOCIATION OF CALIFORNIA | Law enforcement | California | 1 | 6 | $300K |
| DUE PROCESS INSTITUTE | — | District of Columbia | 1 | 6 | — |
| SERGEANTS BENEVOLENT ASSOCIATION OF NEW YORK CITY | Labor organization | New York | 1 | 3 | $110K |
| DRUG POLICY ALLIANCE | — | New York | 1 | 2 | — |
| NATIONAL ASSOCIATION OF CRIMINAL DEFENSE LAWYERS (NACDL) | — | District of Columbia | 1 | 2 | — |
| PENNSYLVANIA FARM BUREAU | — | Pennsylvania | 1 | 2 | — |
Firms
Registrants who filed on the bill, by filings.
| Registrant | Clients | Filings | Reported |
|---|---|---|---|
| DUE PROCESS INSTITUTE | 1 | 6 | — |
| STEPTOE LLP | 1 | 6 | $300K |
| LONGBOW PUBLIC POLICY GROUP, LLC | 1 | 3 | $110K |
| DRUG POLICY ALLIANCE | 1 | 2 | — |
| NATIONAL ASSOCIATION OF CRIMINAL DEFENSE LAWYERS (NACDL) | 1 | 2 | — |
| PENNSYLVANIA FARM BUREAU | 1 | 2 | — |
Lobbyists
Named on the filings that cite the bill.
| Lobbyist | Firms | Clients | Filings |
|---|---|---|---|
| JASON PYE | 1 | 1 | 6 |
| ROWAN BOST | 1 | 1 | 6 |
| SHANA-TARA O'TOOLE | 1 | 1 | 6 |
| DARRYL NIRENBERG | 1 | 1 | 5 |
| BRADY MCNAMARA | 1 | 1 | 4 |
| ANDREW SIFF | 1 | 1 | 3 |
| CARISA MCLANEY | 1 | 1 | 3 |
| CHRIS GRANBERG | 1 | 1 | 3 |
| BAILEY FISHER (THUMM) | 1 | 1 | 2 |
| DANIEL FISHBEIN | 1 | 1 | 2 |
| ELIZABETH GOODWIN | 1 | 1 | 2 |
| HANNA SHARIF-KAZEMI | 1 | 1 | 2 |
| JACK BUTTARAZZI | 1 | 1 | 2 |
| KYLE O'DOWD | 1 | 1 | 2 |
| LAURA HOWARD | 1 | 1 | 2 |
| MARITZA PEREZ MEDINA | 1 | 1 | 2 |
| NATHAN PYSNO | 1 | 1 | 2 |
| MEANNA GRAY | 1 | 1 | 1 |
Filings
The documents themselves, on the Senate’s Lobbying Disclosure site, largest reported first.
| Client | Registrant | Period | Reported | Document |
|---|---|---|---|---|
| PEACE OFFICERS RESEARCH ASSOCIATION OF CALIFORNIA | STEPTOE LLP | 2026 second_quarter | $50K | 2nd Quarter - Report |
| PEACE OFFICERS RESEARCH ASSOCIATION OF CALIFORNIA | STEPTOE LLP | 2026 first_quarter | $50K | 1st Quarter - Report |
| PEACE OFFICERS RESEARCH ASSOCIATION OF CALIFORNIA | STEPTOE LLP | 2025 fourth_quarter | $50K | 4th Quarter - Report |
| PEACE OFFICERS RESEARCH ASSOCIATION OF CALIFORNIA | STEPTOE LLP | 2025 third_quarter | $50K | 3rd Quarter - Report |
| PEACE OFFICERS RESEARCH ASSOCIATION OF CALIFORNIA | STEPTOE LLP | 2025 second_quarter | $50K | 2nd Quarter - Report |
| PEACE OFFICERS RESEARCH ASSOCIATION OF CALIFORNIA | STEPTOE LLP | 2025 first_quarter | $50K | 1st Quarter - Report |
| SERGEANTS BENEVOLENT ASSOCIATION OF NEW YORK CITY | LONGBOW PUBLIC POLICY GROUP, LLC | 2026 second_quarter | $40K | 2nd Quarter - Report |
| SERGEANTS BENEVOLENT ASSOCIATION OF NEW YORK CITY | LONGBOW PUBLIC POLICY GROUP, LLC | 2026 first_quarter | $40K | 1st Quarter - Report |
| DUE PROCESS INSTITUTE | DUE PROCESS INSTITUTE | 2025 third_quarter | $40K | 3rd Quarter - Report |
| DUE PROCESS INSTITUTE | DUE PROCESS INSTITUTE | 2025 second_quarter | $40K | 2nd Quarter - Report |
| DUE PROCESS INSTITUTE | DUE PROCESS INSTITUTE | 2025 first_quarter | $40K | 1st Quarter - Report |
| SERGEANTS BENEVOLENT ASSOCIATION OF NEW YORK CITY | LONGBOW PUBLIC POLICY GROUP, LLC | 2025 first_quarter | $30K | 1st Quarter - Report |
| DRUG POLICY ALLIANCE | DRUG POLICY ALLIANCE | 2026 second_quarter | $18.6K | 2nd Quarter - Report |
| DUE PROCESS INSTITUTE | DUE PROCESS INSTITUTE | 2026 second_quarter | $15K | 2nd Quarter - Report |
| NATIONAL ASSOCIATION OF CRIMINAL DEFENSE LAWYERS (NACDL) | NATIONAL ASSOCIATION OF CRIMINAL DEFENSE LAWYERS (NACDL) | 2026 second_quarter | $15K | 2nd Quarter - Report |
| DUE PROCESS INSTITUTE | DUE PROCESS INSTITUTE | 2026 first_quarter | $15K | 1st Quarter - Report |
| NATIONAL ASSOCIATION OF CRIMINAL DEFENSE LAWYERS (NACDL) | NATIONAL ASSOCIATION OF CRIMINAL DEFENSE LAWYERS (NACDL) | 2026 first_quarter | $15K | 1st Quarter - Report |
| DUE PROCESS INSTITUTE | DUE PROCESS INSTITUTE | 2025 fourth_quarter | $10K | 4th Quarter - Report |
| PENNSYLVANIA FARM BUREAU | PENNSYLVANIA FARM BUREAU | 2025 first_quarter | $10K | 1st Quarter - Amendme… |
| DRUG POLICY ALLIANCE | DRUG POLICY ALLIANCE | 2026 first_quarter | — | 1st Quarter - Report |
Classification
The Congressional Research Service files S. 545 under Crime and Law Enforcement, one of its 31 policy areas, and gives it 9 legislative subjects.
CRS Subjects
CRS assigns every bill one policy area from its 31; S. 545’s is Crime and Law Enforcement.
s545/policy-areas.txtLegislative Subjects
S. 545 carries 9 of CRS’s legislative subjects, from Congressional oversight to Veterinary medicine and animal diseases.
s545/subjects.txtSource: congress.gov · legiscan.com
