For the fifth time in just under three years, the Trump administration finds itself looking for another Department of Homeland Security (DHS) secretary, after acting Secretary Kevin McAleenan said he would step down.

McAleenan, an Obama administration holdover who replaced the embattled former DHS Secretary Kristjen Nielsen, tendered his resignation just a few days after pro-immigrant protesters drowned out his speech at an event at the Georgetown University Law Center.

While McAleenan has been credited by the president and others for reducing crossings at the southern border and thanked Trump for his efforts to secure the border, he more recently expressed dismay over the politicization of DHS, saying in a Washington Post report that he didn’t have control over “the tone, the message, the public face and approach of the department in an increasingly polarized time.” 

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