Elon Musk is like a dog with a bone.What’s made him so successful, an unwavering belief that he is right, can also be his undoing—especially when the world’s richest man becomes emotional about the matter.

White House Deputy Chief of Staff for Policy Stephen Miller blew up on Elon Musk on Tuesday night as the tech billionaire continued to tear into President Donald Trump’s “big, beautiful bill” on social media.

President Donald Trump on Tuesday did not rule out deporting his former top ally Elon Musk over his criticism of his “big, beautiful bill” as their once-close relationship continues to go downhill. Related: Donald Trump And Tucker Carlson Are Feuding, And Today It Escalated Even More