Markwayne Mullin

Markwayne Mullin is an American politician and businessman who has served since 2026 as the ninth United States secretary of homeland security. A member of the Republican Party, Mullin served from 2023 to 2026 as the junior United States senator from Oklahoma and from 2013 to 2023 as the U.S. representative for Oklahoma's second congressional district. A member of the Cherokee Nation, Mullin assumed control of his family's plumbing business in 1998. After entering the 2012 United States House of Representatives election for Oklahoma's second congressional district in 2011, he defeated Democratic candidate Rob Wallace. He was reelected in 2014, 2016, 2018, and 2020.