In a letter to President Trump, members of the Republican Main Street Caucus back Sen. Markwayne Mullin to lead Homeland Security after Kristi Noem's ouster.

In recent weeks, Mullin's comments referencing the "smell of war" in Iran have drawn the public's eye to his military history. Here's what to know.

ADOVOCATE: Sen. Markwayne Mullin (R-OK) and ACCA President and CEO Barton James host a discussion during ACCA's Advocacy Day in 2025. (Courtesy of ACCA). March 10, 2026 A man who went from an HVAC contractor to United States Senator is poised to take over ...

If confirmed, Sen. Markwayne Mullin would oversee the sprawling agency amid falling public support for the administration’s mass deportation program.

News Oklahoma's Isabel Flores speaks with Cherokee Nation citizens about their stances on Senator Markwayne Mullin's nomination to be the head of the Department of Homeland Security.

Sen. Markwayne Mullin is stepping in to direct America’s national security at a tumultuous time for the Trump administration. President

Teamsters boss Sean O'Brien endorses Sen. Markwayne Mullin for DHS chief, two years after their viral Senate hearing nearly turned into a physical fight.

(CNN) — President Donald Trump said Thursday on social media he was pushing Homeland Security Secretary Kristi Noem out of her position and would nominate Oklahoma Sen. Markwayne Mullin to replace her. Noem, who was tapped by Trump to helm DHS at the ...