U.S. Department of Homeland Security

U.S. senators officially confirmed one of their colleagues, Oklahoma Sen. Markwayne Mullin, to serve as Secretary of Homeland Security Monday.

U.S. Senator Markwayne Mullin, R-Oklahoma, is one step closer to becoming the US Secretary of Homeland Security.

With Oklahoma's junior U.S. Senator Markwayne Mullin expected to be confirmed as Secretary of Homeland Security, potential candidates are lining up to fill his seat.

President Trump recently announced he’s appointing Markwayne Mullin as Secretary of Homeland Security, but it’s up to Mullin’s fellow Senators to decide whether he’s up for the job.

President Trump's appointment of Oklahoma U.S. Senator Markwayne Mullin as Homeland Security Secretary sends ripples through the state's 2026 election cycle.

As Oklahoma’s U.S. Senator Markwayne Mullin transitions into a new role as President Donald Trump’s latest Secretary of Homeland Security appointment, Gov. Kevin Stitt will pick his replacement. Here’s how, according to state law.

President Donald Trump announced on social media Thursday that he is appointing Oklahoma Republican Senator Markwayne Mullin as the nation’s next Secretary of Homeland Security.

The U.S. Department of Homeland Security’s plan to spray chemicals and biological agents in simulated terrorist attacks at an abandoned school has alarmed…