After declaring he was stepping away from the political spotlight, Elon Musk got right back in it. As the Senate debated President Donald Trump’s “Big, Beautiful Bill” on Monday before a final vote, Musk issued a stark warning via his social media platform X.

Musk had previously criticized the Republican tax and spending bill before he made nice with President Trump. Now he's back to criticizing.

Elon Musk warned that he would boost primary challenges against Republican lawmakers who vote for President Trump's so-called "big, beautiful bill."