H.R. 8663: DETECT Fentanyl and Xylazine Act of 2024

Bill · 118th Congress (2023–2024). Became law, 23 Dec 2024 · Public Law 118-186. Introduced 7 Jun 2024.

Official title: To require the Science and Technology Directorate in the Department of Homeland Security to develop greater capacity to detect, identify, and disrupt illicit substances in very low concentrations.

Vote results

How each member voted

White House

Signed (1): Joseph Biden (D, President).

Senate

Agreed to by unanimous consent: the record lists no member’s position.

House

Yea (404): Harold Rogers (R-KY-5); Christopher H. Smith (R-NJ-4); Steny H. Hoyer (D-MD-5); Marcy Kaptur (D-OH-9); Frank Pallone, Jr. (D-NJ-6); Richard E. Neal (D-MA-1); Rosa L. DeLauro (D-CT-3); Maxine Waters (D-CA-43); Jerrold Nadler (D-NY-12); Sanford D. Bishop, Jr. (D-GA-2); Ken Calvert (R-CA-41); Anna G. Eshoo (D-CA-16); Robert C. "Bobby" Scott (D-VA-3); Bennie G. Thompson (D-MS-2); Frank D. Lucas (R-OK-3); Lloyd Doggett (D-TX-37); Zoe Lofgren (D-CA-18); Robert B. Aderholt (R-AL-4); Danny K. Davis (D-IL-7); Diana DeGette (D-CO-1); James P. McGovern (D-MA-2); Brad Sherman (D-CA-32); Adam Smith (D-WA-9); Gregory W. Meeks (D-NY-5); Barbara Lee (D-CA-12); John B. Larson (D-CT-1); Janice D. Schakowsky (D-IL-9); Michael K. Simpson (R-ID-2); Mike Thompson (D-CA-4); Pete Sessions (R-TX-17); Sam Graves (R-MO-6); Rick Larsen (D-WA-2); Betty McCollum (D-MN-4); Stephen F. Lynch (D-MA-8); Joe Wilson (R-SC-2); Michael C. Burgess (R-TX-26); John R. Carter (R-TX-31); Tom Cole (R-OK-4); Mario Diaz-Balart (R-FL-26); Mike Rogers (R-AL-3); C. A. Dutch Ruppersberger (D-MD-2); David Scott (D-GA-13); Linda T. Sánchez (D-CA-38); Michael R. Turner (R-OH-10); Darrell Issa (R-CA-48); Emanuel Cleaver (D-MO-5); Jim Costa (D-CA-21); Henry Cuellar (D-TX-28); Virginia Foxx (R-NC-5); Al Green (D-TX-9); Michael T. McCaul (R-TX-10); Patrick T. McHenry (R-NC-10); Debbie Wasserman Schultz (D-FL-25); Doris O. Matsui (D-CA-7); Gus M. Bilirakis (R-FL-12); Vern Buchanan (R-FL-16); Kathy Castor (D-FL-14); Yvette D. Clarke (D-NY-9); Steve Cohen (D-TN-9); Joe Courtney (D-CT-2); Henry C. "Hank" Johnson, Jr. (D-GA-4); Jim Jordan (R-OH-4); Doug Lamborn (R-CO-5); John P. Sarbanes (D-MD-3); Adrian Smith (R-NE-3); Robert E. Latta (R-OH-5); Robert J. Wittman (R-VA-1); André Carson (D-IN-7); Steve Scalise (R-LA-1); Tim Walberg (R-MI-5); Gerald E. Connolly (D-VA-11); Brett Guthrie (R-KY-2); James A. Himes (D-CT-4); Blaine Luetkemeyer (R-MO-3); Tom McClintock (R-CA-5); Chellie Pingree (D-ME-1); Bill Posey (R-FL-8); Glenn Thompson (R-PA-15); Paul Tonko (D-NY-20); Mike Quigley (D-IL-5); Judy Chu (D-CA-28); John Garamendi (D-CA-8); Bill Foster (D-IL-11); Larry Bucshon (R-IN-8); Eric A. "Rick" Crawford (R-AR-1); Scott DesJarlais (R-TN-4); Jeff Duncan (R-SC-3); Charles J. "Chuck" Fleischmann (R-TN-3); Paul A. Gosar (R-AZ-9); H. Morgan Griffith (R-VA-9); Andy Harris (R-MD-1); Bill Huizenga (R-MI-4); William R. Keating (D-MA-9); David Schweikert (R-AZ-1); Austin Scott (R-GA-8); Terri A. Sewell (D-AL-7); Daniel Webster (R-FL-11); Frederica S. Wilson (D-FL-24); Steve Womack (R-AR-3); Dina Titus (D-NV-1); Kweisi Mfume (D-MD-7); Mark E. Amodei (R-NV-2); Suzanne Bonamici (D-OR-1); Suzan K. DelBene (D-WA-1); Andy Barr (R-KY-6); Joyce Beatty (D-OH-3); Ami Bera (D-CA-6); Julia Brownley (D-CA-26); Matt Cartwright (D-PA-8); Joaquin Castro (D-TX-20); Tony Cárdenas (D-CA-29); Lois Frankel (D-FL-22); Richard Hudson (R-NC-9); Jared Huffman (D-CA-2); Hakeem S. Jeffries (D-NY-8); David P. Joyce (R-OH-14); Daniel T. Kildee (D-MI-8); Derek Kilmer (D-WA-6); Ann M. Kuster (D-NH-2); Doug LaMalfa (R-CA-1); Grace Meng (D-NY-6); Scott Perry (R-PA-10); Scott H. Peters (D-CA-50); Mark Pocan (D-WI-2); Raul Ruiz (D-CA-25); Eric Swalwell (D-CA-14); Mark Takano (D-CA-39); Juan Vargas (D-CA-52); Marc A. Veasey (D-TX-33); Ann Wagner (R-MO-2); Randy K. Weber, Sr. (R-TX-14); Brad R. Wenstrup (R-OH-2); Robin L. Kelly (D-IL-2); Jason Smith (R-MO-8); Katherine M. Clark (D-MA-5); Alma S. Adams (D-NC-12); Donald Norcross (D-NJ-1); Pete Aguilar (D-CA-33); Rick W. Allen (R-GA-12); Brian Babin (R-TX-36); Donald S. Beyer, Jr. (D-VA-8); Mike Bost (R-IL-12); Brendan F. Boyle (D-PA-2); Earl L. "Buddy" Carter (R-GA-1); Ed Case (D-HI-1); Mark DeSaulnier (D-CA-10); Debbie Dingell (D-MI-6); Tom Emmer (R-MN-6); Garret Graves (R-LA-6); Glenn Grothman (R-WI-6); J. French Hill (R-AR-2); John R. Moolenaar (R-MI-2); Alexander X. Mooney (R-WV-2); Seth Moulton (D-MA-6); Dan Newhouse (R-WA-4); Gary J. Palmer (R-AL-6); David Rouzer (R-NC-7); Elise M. Stefanik (R-NY-21); Norma J. Torres (D-CA-35); Bonnie Watson Coleman (D-NJ-12); Bruce Westerman (R-AR-4); Bradley Scott Schneider (D-IL-10); David G. Valadao (R-CA-22); Trent Kelly (R-MS-1); Darin LaHood (R-IL-16); Warren Davidson (R-OH-8); James Comer (R-KY-1); Jodey C. Arrington (R-TX-19); Don Bacon (R-NE-2); Jim Banks (R-IN-3); Nanette Diaz Barragán (D-CA-44); Jack Bergman (R-MI-1); Andy Biggs (R-AZ-5); Lisa Blunt Rochester (D-DE-AL); Salud O. Carbajal (D-CA-24); J. Luis Correa (D-CA-46); Neal P. Dunn (R-FL-2); Adriano Espaillat (D-NY-13); A. Drew Ferguson IV (R-GA-3); Brian K. Fitzpatrick (R-PA-1); Vicente Gonzalez (D-TX-34); Clay Higgins (R-LA-3); Steven Horsford (D-NV-4); Pramila Jayapal (D-WA-7); Ro Khanna (D-CA-17); Raja Krishnamoorthi (D-IL-8); David Kustoff (R-TN-8); Brian J. Mast (R-FL-21); Jimmy Panetta (D-CA-19); Jamie Raskin (D-MD-8); John H. Rutherford (R-FL-5); Lloyd Smucker (R-PA-11); Darren Soto (D-FL-9); Ron Estes (R-KS-4); Ralph Norman (R-SC-5); Jimmy Gomez (D-CA-34); John R. Curtis (R-UT-3); Thomas R. Suozzi (D-NY-3); Debbie Lesko (R-AZ-8); Michael Cloud (R-TX-27); Troy Balderson (R-OH-12); Kevin Hern (R-OK-1); Joseph D. Morelle (D-NY-25); Mary Gay Scanlon (D-PA-5); Susan Wild (D-PA-7); Colin Z. Allred (D-TX-32); James R. Baird (R-IN-4); Tim Burchett (R-TN-2); Sean Casten (D-IL-6); Ben Cline (R-VA-6); Angie Craig (D-MN-2); Dan Crenshaw (R-TX-2); Jason Crow (D-CO-6); Sharice Davids (D-KS-3); Madeleine Dean (D-PA-4); Veronica Escobar (D-TX-16); Lizzie Fletcher (D-TX-7); Russ Fulcher (R-ID-1); Sylvia R. Garcia (D-TX-29); Jesús G. "Chuy" García (D-IL-4); Jared F. Golden (D-ME-2); Lance Gooden (R-TX-5); Mark E. Green (R-TN-7); Michael Guest (R-MS-3); Josh Harder (D-CA-9); Jahana Hayes (D-CT-5); Chrissy Houlahan (D-PA-6); Dusty Johnson (R-SD-AL); John Joyce (R-PA-13); Susie Lee (D-NV-3); Mike Levin (D-CA-49); Lucy McBath (D-GA-7); Daniel Meuser (R-PA-9); Carol D. Miller (R-WV-1); Joe Neguse (D-CO-2); Alexandria Ocasio-Cortez (D-NY-14); Ilhan Omar (D-MN-5); Chris Pappas (D-NH-1); Greg Pence (R-IN-6); Dean Phillips (D-MN-3); Ayanna Pressley (D-MA-7); Guy Reschenthaler (R-PA-14); John W. Rose (R-TN-6); Chip Roy (R-TX-21); Kim Schrier (D-WA-8); Mikie Sherrill (D-NJ-11); Elissa Slotkin (D-MI-7); Abigail Davis Spanberger (D-VA-7); Greg Stanton (D-AZ-4); Pete Stauber (R-MN-8); Bryan Steil (R-WI-1); W. Gregory Steube (R-FL-17); Haley M. Stevens (D-MI-11); William R. Timmons IV (R-SC-4); Rashida Tlaib (D-MI-12); Lori Trahan (D-MA-3); David J. Trone (D-MD-6); Lauren Underwood (D-IL-14); Jefferson Van Drew (R-NJ-2); Claudia Tenney (R-NY-24); Dan Bishop (R-NC-8); Gregory F. Murphy (R-NC-3); Thomas P. Tiffany (R-WI-7); Ryan K. Zinke (R-MT-1); Jake Auchincloss (D-MA-4); Cliff Bentz (R-OR-2); Stephanie I. Bice (R-OK-5); Lauren Boebert (R-CO-3); Cori Bush (D-MO-1); Kat Cammack (R-FL-3); Jerry L. Carl (R-AL-1); Andrew S. Clyde (R-GA-9); Byron Donalds (R-FL-19); Pat Fallon (R-TX-4); Randy Feenstra (R-IA-4); Michelle Fischbach (R-MN-7); Scott Fitzgerald (R-WI-5); Scott Franklin (R-FL-18); Andrew R. Garbarino (R-NY-2); Carlos A. Gimenez (R-FL-28); Tony Gonzales (R-TX-23); Bob Good (R-VA-5); Marjorie Taylor Greene (R-GA-14); Diana Harshbarger (R-TN-1); Ashley Hinson (R-IA-2); Ronny Jackson (R-TX-13); Sara Jacobs (D-CA-51); Young Kim (R-CA-40); Jake LaTurner (R-KS-2); Teresa Leger Fernandez (D-NM-3); Nancy Mace (R-SC-1); Nicole Malliotakis (R-NY-11); Tracey Mann (R-KS-1); Kathy E. Manning (D-NC-6); Lisa C. McClain (R-MI-9); Mary E. Miller (R-IL-15); Mariannette Miller-Meeks (R-IA-1); Barry Moore (R-AL-2); Blake D. Moore (R-UT-1); Frank J. Mrvan (D-IN-1); Troy E. Nehls (R-TX-22); Jay Obernolte (R-CA-23); Burgess Owens (R-UT-4); August Pfluger (R-TX-11); Matthew M. Rosendale, Sr. (R-MT-2); Deborah K. Ross (D-NC-2); Victoria Spartz (R-IN-5); Michelle Steel (R-CA-45); Marilyn Strickland (D-WA-10); Ritchie Torres (D-NY-15); Beth Van Duyne (R-TX-24); Nikema Williams (D-GA-5); Julia Letlow (R-LA-5); Troy A. Carter (D-LA-2); Melanie A. Stansbury (D-NM-1); Jake Ellzey (R-TX-6); Shontel M. Brown (D-OH-11); Mike Carey (R-OH-15); Sheila Cherfilus-McCormick (D-FL-20); Mike Flood (R-NE-1); Brad Finstad (R-MN-1); Patrick Ryan (D-NY-18); Rudy Yakym III (R-IN-2); Mark Alford (R-MO-4); Becca Balint (D-VT-AL); Aaron Bean (R-FL-4); Josh Brecheen (R-OK-2); Nikki Budzinski (D-IL-13); Eric Burlison (R-MO-7); Yadira Caraveo (D-CO-8); Greg Casar (D-TX-35); Juan Ciscomani (R-AZ-6); Mike Collins (R-GA-10); Elijah Crane (R-AZ-2); Jasmine Crockett (D-TX-30); Anthony D’Esposito (R-NY-4); Donald G. Davis (D-NC-1); Monica De La Cruz (R-TX-15); Christopher R. Deluzio (D-PA-17); John S. Duarte (R-CA-13); Chuck Edwards (R-NC-11); Mike Ezell (R-MS-4); Valerie P. Foushee (D-NC-4); Maxwell Frost (D-FL-10); Russell Fry (R-SC-7); Robert Garcia (D-CA-42); Marie Gluesenkamp Perez (D-WA-3); Daniel S. Goldman (D-NY-10); Harriet M. Hageman (R-WY-AL); Erin Houchin (R-IN-9); Val T. Hoyle (D-OR-4); Wesley Hunt (R-TX-38); Glenn Ivey (D-MD-4); Jonathan L. Jackson (D-IL-1); John James (R-MI-10); Sydney Kamlager-Dove (D-CA-37); Thomas H. Kean, Jr. (R-NJ-7); Jennifer A. Kiggans (R-VA-2); Kevin Kiley (R-CA-3); Nick LaLota (R-NY-1); Greg Landsman (D-OH-1); Nicholas A. Langworthy (R-NY-23); Michael Lawler (R-NY-17); Laurel M. Lee (R-FL-15); Summer L. Lee (D-PA-12); Anna Paulina Luna (R-FL-13); Morgan Luttrell (R-TX-8); Seth Magaziner (D-RI-2); Richard McCormick (R-GA-6); Morgan McGarvey (D-KY-3); Robert Menendez (D-NJ-8); Max L. Miller (R-OH-7); Cory Mills (R-FL-7); Marcus J. Molinaro (R-NY-19); Nathaniel Moran (R-TX-1); Jared Moskowitz (D-FL-23); Kevin Mullin (D-CA-15); Wiley Nickel (D-NC-13); Zachary Nunn (R-IA-3); Andrew Ogles (R-TN-5); Brittany Pettersen (D-CO-7); Delia C. Ramirez (D-IL-3); Andrea Salinas (D-OR-6); Hillary J. Scholten (D-MI-3); Keith Self (R-TX-3); Eric Sorensen (D-IL-17); Dale W. Strong (R-AL-5); Emilia Strong Sykes (D-OH-13); Shri Thanedar (D-MI-13); Jill N. Tokuda (D-HI-2); Derrick Van Orden (R-WI-3); Gabe Vasquez (D-NM-2); Brandon Williams (R-NY-22); Jennifer L. McClellan (D-VA-4); Gabe Amo (D-RI-1); Celeste Maloy (R-UT-2); Timothy M. Kennedy (D-NY-26); Vince Fong (R-CA-20); Michael A. Rulli (R-OH-6); Greg Lopez (R-CO-4); LaMonica McIver (D-NJ-10); Erica Lee Carter (D-TX-18); Tony Wied (R-WI-8); Jeff Jackson (D-NC-14).

Nay (1): Thomas Massie (R-KY-4).

Not voting (24): Nancy Pelosi (D-CA-11); James E. Clyburn (D-SC-6); Nydia M. Velázquez (D-NY-7); Earl Blumenauer (D-OR-3); Kay Granger (R-TX-12); Grace F. Napolitano (D-CA-31); Raúl M. Grijalva (D-AZ-7); Cathy McMorris Rodgers (R-WA-5); Gwen Moore (D-WI-4); Mike Kelly (R-PA-16); Roger Williams (R-TX-25); Ruben Gallego (D-AZ-3); Ted Lieu (D-CA-36); Barry Loudermilk (R-GA-11); Dwight Evans (D-PA-3); Josh Gottheimer (D-NJ-5); Katie Porter (D-CA-47); Michael Waltz (R-FL-6); Jennifer Wexton (D-VA-10); Mike Garcia (R-CA-27); Jamaal Bowman (D-NY-16); Maria Elvira Salazar (R-FL-27); Mary Sattler Peltola (D-AK-AL); Lori Chavez-DeRemer (R-OR-5).

Speaker, not listed (1): Mike Johnson (R-LA-4).

Not in office (15): Sheila Jackson Lee (D-TX-18); Bill Pascrell, Jr. (D-NJ-9); Adam B. Schiff (D-CA-30); Brian Higgins (D-NY-26); Kevin McCarthy (R-CA-20); Bill Johnson (R-OH-6); David N. Cicilline (D-RI-1); Donald M. Payne, Jr. (D-NJ-10); Chris Stewart (R-UT-2); Ken Buck (R-CO-4); Matt Gaetz (R-FL-1); Mike Gallagher (R-WI-8); Kelly Armstrong (R-ND-AL); Andy Kim (D-NJ-3); George Santos (R-NY-3).

Summary

Main subject: Adds to the Homeland Security Act of 2002 a duty for the Science and Technology Directorate to carry out research, development, testing and evaluation of drug detection equipment and reference libraries, and sets requirements for how it does so. Sec. 2, Sec. 3

Its core areas: Drug detection equipment and reference library research at the Department of Homeland Security Science and Technology Directorate; Use of artificial intelligence and machine learning to identify new drug substances; Standards and threat reports guiding Science and Technology Directorate priorities.

Unexpected Items: 0 provisions

What it does

Written automatically from the official text by Claude Sonnet 5.5, an AI model. Written 30 Sep 2026 and published after the automatic checks, without a person reading it first. Every line names the section it came from.

Changed after House passage

Compares the bill as passed by the House, 9 Sep 2024, with the final text passed by both chambers. About 84% of the wording the House passed stands in the final text.

Removed before the final vote (0)

None.

Added after House passage (1)

Sources