"Shame on those who voted for it: you know you did wrong," the Tesla CEO wrote, citing projections that the legislation would add more than $2 trillion to the national debt.

WASHINGTON—Former White House cost-cutting czar Elon Musk called President Trump’s “big, beautiful” tax and spending package a “disgusting abomination,” stepping up his criticism just as the Senate is trying to quickly pass the measure and get it signed into law by July 4.