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Secretary of Homeland Security

Markwayne Mullin

Republican · Oklahoma

U.S. Senator from Oklahoma (2023–2026) and a House member before that. A plumbing company owner of Cherokee descent and former MMA fighter. Confirmed 54–45 on March 23, 2026, he resigned his Senate seat to lead the Department of Homeland Security, succeeding Kristi Noem.

Record

Brings a staunchly conservative Senate record to immigration enforcement, border security, and counter-narcotics. Long focused on Oklahoma's energy and agricultural interests, with some nuanced positions on tribal sovereignty. Known for a confrontational hearing-room style.

Legislative Record

Recently sponsored bills (8 on record)

  • S.3994 — PRIME Meat Processing in Indian Country Act (Introduced, Mar 4, 2026)
  • S.3946 — Tribal Firearm Access Act (Introduced, Feb 26, 2026)
    Tribal Firearm Access Act This bill allows members of federally recognized Indian tribes to use their valid identification documents issued by tribal governments to obtain a firearm from a federally licensed dealer.
  • S.3945 — Tribal Police Department Parity Act (Introduced, Feb 26, 2026)
    Tribal Police Department Parity Act This bill treats tribal law enforcement agencies in the same manner as federal, state, and local law enforcement agencies for purposes of accessing firearms. The National Firearms Act (NFA) generally imposes a tax on the transfer of an NFA firearm; however…
  • S.3302 — Mikaela Naylon Give Kids a Chance Act of 2025 (Introduced, Dec 2, 2025)
    Mikaela Naylon Give Kids a Chance Act of 2025 This bill authorizes certain targeted clinical trials involving combinations of drugs to treat pediatric cancer, and renews the Food and Drug Administration’s (FDA’s) authority to award priority review vouchers (PRVs) to sponsors of new products for rare…
  • S.3111 — Small Businesses before Bureaucrats Act (Introduced, Nov 5, 2025)
  • S.2898 — Dennis John Benigno Traumatic Brain Injury Program Reauthorization Act of 2025 (Introduced, Sep 18, 2025)
  • S.J.Res.79 — A joint resolution honoring the sacrifice of Marine Corps Lance Corporal David L. Espinoza, Marine Corps Sergeant Nicole L. Gee, Marine Corps Staff Sergeant Darin Taylor Hoover, Army Staff Sergeant Ryan Christian Knauss, Marine Corps Corporal Hunter Lopez, Marine Corps Lance Corporal Rylee J. McCollum, Marine Corps Lance Corporal Dylan R. Merola, Marine Corps Lance Corporal Kareem M. Nikoui, Marine Corps Corporal Daegan W. Page, Marine Corps Sergeant Johanny Rosario, Marine Corps Corporal Humberto A. Sanchez, Marine Corps Lance Corporal Jared M. Schmitz, and Navy Petty Officer Third Class Maxton W. Soviak. (Introduced, Sep 17, 2025)
  • S.2257 — Legislative Branch Appropriations Act, 2026 (Introduced, Jul 10, 2025)
    Legislative Branch Appropriations Act, 2026 This bill provides FY2026 appropriations for the legislative branch, including the Senate and joint items such as the Joint Economic Committee, the Joint Committee on Taxation, the Office of the Attending Physician, and the Office of Congressional…

Notable votes

  • Voted Nay on S. 1383 — Motion to Invoke Cloture: Schumer Motion to Suspend the Rules re: TSA Funding (Cloture Motion Rejected, Mar 21, 2026)
  • Voted Yea on S. 1383 — Motion to Invoke Cloture: Tuberville Amdt. No. 4421 to the Motion to Concur in the House Amendment to S. 1383 with Amendment (Cloture Motion Rejected, Mar 21, 2026)
  • Voted Yea on H.R. 6644 — H.R. 6644, as amended (Bill Passed, Mar 12, 2026)
  • Voted Yea on H.R. 6644 — Motion to Invoke Cloture: H.R. 6644 as amended (Cloture Motion Agreed to, Mar 11, 2026)
  • Voted Yea on H.R. 6644 — Scott (SC) Amdt. No. 4308, as amended (Amendment Agreed to, Mar 11, 2026)
  • Voted Yea on H.R. 6644 — Motion to Invoke Cloture Re: Amdt. No. 4308 (Cloture Motion Agreed to, Mar 10, 2026)
  • Voted Yea on H.J.Res. 142 — H. J. Res. 142 (Joint Resolution Passed, Feb 12, 2026)
  • Voted Yea on H.R. 7148 — H.R. 7148, as Amended (Bill Passed, Jan 30, 2026)

Recently cosponsored bills (12 on record)

  • S.1970 — MACV–SOG Congressional Gold Medal Act (Introduced, Mar 5, 2026)
  • S.2022 — Tribal Tax and Investment Reform Act of 2025 (Introduced, Mar 4, 2026)
  • S.2624 — Kamisha's Law (Introduced, Feb 25, 2026)
  • S.3909 — Stop Illegal Alien Cops Act (Introduced, Feb 25, 2026)
  • S.137 — FIND Act (Introduced, Feb 24, 2026)
  • S.1547 — America the Beautiful Act (Introduced, Feb 24, 2026)
  • S.1574 — Tribal Access to Electronic Evidence Act (Introduced, Feb 24, 2026)
  • S.3752 — SAVE America Act (Introduced, Feb 5, 2026)

By the numbers

In the 119th Congress, Markwayne Mullin has 162 bills sponsored, 1596 cosponsored, 8 recent floor votes recorded.

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