When Elon Musk denounced Republicans’ hefty spending plan as a “disgusting abomination” earlier this week, he largely steered clear of President Donald Trump, who has thrown his support behind the One Big Beautiful Bill. That changed on Thursday afternoon when the world’s richest man went after the world’s most powerful man.

President Donald Trump said he isn’t sure he and tech billionaire Elon Musk will have a good relationship after he criticized the spending package