Trump Is Already Fighting With His New Homeland Security Secretary

It’s only been four months, but it looks like Homeland Security Secretary Markwayne Mullin is already on the White House’s bad side. The rift is a result of some early missteps and concerns about Mullin’s personnel choices, according to a senior Trump administration official and a senior Department of Homeland Security official who spoke with NBC News Thursday.   The White House wasn’t happy with Mullin’s decision to temporarily restrict Immigration and Customs Enforcement vehicle stops after…