Article continues below advertisementPresident Donald Trump has shockingly fired Homeland Security Secretary Kristi Noem in a bombshell move from the Republican leader.The POTUS took to Truth Social on Thursday, March 5, to reveal Noem had been cut from her position."I am pleased to announce that the Highly Respected United States Senator from the Great State of Oklahoma, Markwayne Mullin, will become the United States Secretary of Homeland Security (DHS), effective March 31, 2026," Trump revealed.