Musk has launched a campaign against the sweeping Republican bill to advance Trump's agenda, and the president is considering how to respond, according to a White House official.

Elon Musk is breaking with Trump and dialing up his attacks on the GOP spending megabill. Meanwhile, Republicans attack the Congressional Budget Office report that shows Trump tax bill would raise deficit by trillions.

Donald Trump always fires back at critics — but for now, he's staying quiet about Elon Musk. That tells you a lot about their alliance.