WASHINGTON, DC - MARCH 18: U.S. Sen. Markwayne Mullin (R-OK) (R) embraces International Brotherhood of Teamsters General President Sean O'Brien at the conclusion of Mullin's confirmation hearing to be the next Secretary of the Department of Homeland Security in the Dirksen Senate Office Building on March 18, 2026 in Washington, DC. President Trump nominated Mullin to replace Kristi Noem as DHS Secretary. (Photo by Chip Somodevilla/Getty Images)