Watch live: Mullin faces questioning from Senate on DHS nomination

Sen. Markwayne Mullin (R-Okla.) is testifying before the Senate Homeland Security and Governmental Affairs Committee on Wednesday after President Trump nominated him to serve as Homeland Security Secretary, succeeding Kristi Noem. Democrats on the committee are expected to press Mullin on his qualifications and policy positions, particularly as partisan tensions over DHS funding have stalled congressional appropriations. The confirmation hearing represents a critical test of whether Mullin can secure enough support to advance through committee and reach a full Senate floor vote. Mullin, a businessman and sitting senator, would be responsible for overseeing border security, immigration enforcement, and federal emergency management if confirmed. The nomination comes as the Trump administration moves to fill key cabinet positions and as Congress remains divided on spending priorities for the department.