President Donald Trump announced March 5 he was replacing Homeland Security Secretary Kristi Noem after lawmakers grilled her this week about a $220 million ad campaign that featured her prominently.
Trump announced on social media that Noem would be succeeded by Sen. Markwayne Mullin, R-Oklahoma, effective March 31.
Trump said Noem would become special envoy for the Shield of the Americas, his initiative for security against narcotics trafficking in the western hemisphere.
The shift came after Noem was grilled by Republicans and Democrats at the Senate Judiciary Committee on March 3 and the House Judiciary Committee on March 4 about her ad campaign. She testified that she had discussed the campaign with Trump and he approved it.
"I never knew anything about it," Trump told Reuters in a phone interview.
The ads prominently featured Noem, including in a scene filmed on horseback at Mount Rushmore in the former South Dakota governor's home state.
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