President Donald Trump says he's "disappointed" with Elon Musk after his former backer and adviser lambasted his signature ...

Analysis: GOP lawmakers and operatives said Republicans should be scared of getting crosswise with either Trump or Elon Musk — a tough task when they are fighting each other.

President Donald Trump suggested Elon Musk, who left the government last month, misses being in the White House and has "Trump derangement syndrome." ...