Trump Swears in Markwayne Mullin as Homeland Security Secretary

President Donald Trump officially swore in Senator Markwayne Mullin as the new Secretary of the Department of Homeland Security in Washington, D.C., on March 24, 2026.

Trump praised Mullin as a “great American patriot” and highlighted his unique background as the first member of the Cherokee Nation to serve in the Cabinet. He also noted Mullin’s athletic career as a professional MMA fighter and wrestler, saying it speaks to his character and toughness.

Trump added that Mullin’s leadership will build on prior successes at the border and DHS operations, while emphasizing professionalism, dedication, and a commitment to national security.