WASHINGTON, DC - MARCH 18: U.S. Sen. Markwayne Mullin (R-OK) testifies during his confirmation hearing to be the next Secretary of the Department of Homeland Security in the Dirksen Senate Office Building on Capitol Hill on March 18, 2026 in Washington, DC. President Donald Trump nominated Mullin to replace Kristi Noem as DHS Secretary. (Photo by Chip Somodevilla/Getty Images)