The Latest: Trump fires Homeland Security Secretary Noem amid criticism over immigration enforcement

President Donald Trump has fired his embattled Homeland Security Secretary Kristi Noem and says he’ll nominate in her place Oklahoma Republican Sen. Markwayne Mullin.

Trump made the announcement on social media on Thursday, two days after Noem faced a grilling on Capitol Hill from GOP members as well as Democrats.

Trump says he’ll make Noem a “Special Envoy for The Shield of the Americas,” a new security initiative that he said would focus on the Western Hemisphere.

Noem...