US Senator Markwayne Mullin (R-OK), nominee to be Secretary of Homeland Security, testifies during a Senate Committee on Homeland Security and Governmental Affairs confirmation hearing on Capitol Hill in Washington, DC, on March 18, 2026. (Photo by Oliver Contreras / AFP via Getty Images)

WASHINGTON, DC - MARCH 18: (L-R) U.S. Rep. Jason Smith (R-MO) and former Speaker of the House Kevin McCarthy and greet General President of the International Brotherhood of Teamsters Sean O'Brien ahead of a confirmation hearing for U.S. Sen. Markwayne Mullin (R-OK) 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)

WASHINGTON, DC - MARCH 18: Former Speaker of the House Kevin McCarthy walks to a confirmation hearing for U.S. Sen. Markwayne Mullin (R-OK) 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)

WASHINGTON, DC - MARCH 18: U.S. Sen. Markwayne Mullin (R-OK) (C) walks to his 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)

WASHINGTON, DC - MARCH 18: U.S. Sen. Markwayne Mullin (R-OK) (C) walks to his 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)

WASHINGTON, DC - MARCH 18: U.S. Sen. Markwayne Mullin (R-OK) (C) walks to his 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)

WASHINGTON, DC - MARCH 18: (L-R) Former Speaker of the House Kevin McCarthy and U.S. Rep. Jason Smith (R-MO) arrive to a confirmation hearing for U.S. Sen. Markwayne Mullin (R-OK) 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)

US President Donald Trump looks at a bowl of shamrocks presented to him by Irish Prime Minster Micheal Martin on the occasion of St. Patrick's Day in the East Room of the White House in Washington, DC, on March 17, 2026. (Photo by Jim WATSON / AFP via Getty Images) *** BESTPIX ***