Homeland Security Secretary Markwayne Mullin testifies on the agency's operations in an oversight hearing before a House Appropriations Committee on Thursday. The hearing is scheduled to being at 10:10 a.m. EDT. Watch it in the player above. Mullin is expected to field questions on how DHS is carrying out President Donald Trump's immigration enforcement agenda. The hearing comes a day after a federal judge ruled that the administration cannot make arrests at immigration courts, a...