Senator Markwayne Mullin, Republican from Oklahoma

Markwayne Mullin

Senator · Oklahoma · Republican

Markwayne Mullin

Biography
Markwayne Mullin served as the junior U.S. senator from Oklahoma from January 2023 until March 2026, when he left the Senate to become U.S. Secretary of Homeland Security after President Trump nominated him to succeed Kristi Noem. A Republican, Mullin previously represented Oklahoma's 2nd congressional district in the House from 2013 to 2023 before winning the 2022 special election to fill Jim Inhofe's seat. A member of the Cherokee Nation and former owner of his family's plumbing business, Mullin was the first tribal citizen in the Senate since 2005 and, with his Cabinet appointment, became the first Cherokee Nation citizen to serve in the U.S. Cabinet.
Education
  • A.A.S., Oklahoma State University Institute of Technology, Okmulgee, OK
    2010
Professional History

  • U.S. Senator

    2023–2026

    Senator from Oklahoma. 1 term.

  • U.S. Representative

    2013–2023

    Represented Oklahoma's 2nd congressional district for 5 terms.

  • U.S. Secretary of Homeland Security

    2026–Present

    Appointed by President Trump after the firing of Secretary Kristi Noem. First Cherokee Nation citizen to serve in the U.S. Cabinet.

  • Owner, family plumbing business

    1998–2013

    Assumed control of his family's plumbing business in Westville, Oklahoma in 1998 after his father's health declined.

Policy Focus
Health23%
Native Americans15%
Science, Technology, Communications6%
Environmental Protection6%
Notable Legislation

Key legislative actions from Markwayne Mullin's record in Congress.

  • Native American Affairs

    Co-chaired the Congressional Native American Caucus, advocating for tribal sovereignty and Native American issues.

  • Water Infrastructure

    Helped secure funding for rural water infrastructure improvements in Oklahoma through federal appropriations.

  • Veterans' Healthcare

    Supported legislation expanding telehealth services for rural veterans to improve healthcare access.

  • Human Trafficking Prevention

    Co-sponsored the Allow States and Victims to Fight Online Sex Trafficking Act (FOSTA) to combat human trafficking.

Committee Assignments
View details →
  • Senate Committee on Indian Affairs
  • Senate Committee on Health, Education, Labor, and Pensions
  • Senate Committee on Armed Services
  • Senate Committee on Appropriations

Former Sen. Markwayne Mullin FAQ

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