Tension between Mullin and White House appears to be growing, sources say

President Donald Trump brought in Homeland Security Secretary Markwayne Mullin to lead a department at the forefront of his signature domestic policy.

Only four months into his role heading the Department of Homeland Security, there appears to be growing tension between Markwayne Mullin and the White House after some early missteps, according to a senior Trump administration official and a senior DHS official.

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