Kristi Noem tried to justify deporting a Mexican national over a letter threatening to kill Donald Trump—but now officials believe it was phony.

A second foreign national has been arrested after threatening to assassinate President Donald Trump. The first was a Canadian ...

Ramon Morales Reyes allegedly wrote in a letter that he would shoot President Trump in the head at one of his rallies ...

Homeland Security Secretary Kristi Noem says the constitutional provision that allows people to legally challenge their ...