Elon Musk, the world's richest person, reignited his criticism Monday of the Trump-backed One Big Beautiful Bill Act.

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

Elon Musk is threatening to defeat politicians who vote for Trump's megabill."They will lose their primary next year if it is the last thing I do on this Earth," he wrote.Musk previously said he would scale back his political spending.