Days after their feud erupted into public view, Elon Musk walked back some of what he said about President Donald Trump. "I regret some of my posts about President @realDonaldTrump last week. They went too far,

Republicans are less enthusiastic about Musk after his feud with Trump, a new AP-NORC poll finds.

A reduced role for SpaceX would represent the first known setback to Musk's huge volume of business with the U.S. government since his break with Trump last week.