“Homeland Security Secretary Markwayne Mullin has embarked on a wholesale effort to clean house at his embattled department, firing officials closely associated with his predecessor’s leadership and reviewing her spending decisions,” the Wall Street Journal reports. “Mullin’s moves follow the ouster of former Secretary Kristi Noem, who attracted unflattering attention for her department’s aggressive immigration enforcement—culminating in the killing of two U.S. citizen protesters in Minneapolis—as well as her spending millions on a flashy government-run ad campaign prominently featuring herself.”