WASHINGTON, DC - MARCH 18: A detailed view of the boots worn by U.S. Sen. Markwayne Mullin (R-OK) during a 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 Anna Moneymaker/Getty Images)