“President Trump is growing increasingly frustrated with Homeland Security Secretary Markwayne Mullin after Mullin made a series of off-message remarks recently that angered many of the president’s outside allies,” the Wall Street Journal reports.“Trump tapped Mullin, a close ally when he served in the Senate, to take over the homeland security post after he fired Kristi Noem in March. At the time, Trump told advisers he had tired of the infighting and drama at the Department of Homeland Security. When Mullin started the job, he told associates his marching orders were to keep the agency out of the news.”“But a little more than four months into Mullin’s tenure, the president is souring on him, viewing Mullin as weak and off message, the people said.”