New Delhi, July 1 -- Billionaire Elon Musk yet again unleashed a scathing attack on US President Donald Trump's massive tax-and-spending legislation, accusing Republicans of betraying their principles and threatening to fund primary challengers against lawmakers who supported the bill.

In a series of posts on X, formerly Twitter, the Tesla and SpaceX CEO denounced the legislation's unprecedented $5 trillion debt ceiling increase and mocked Congress for enabling it.

"It is obvious with the insane spending of this bill, which increases the debt ceiling by a record FIVE TRILLION DOLLARS that we live in a one-party country - the PORKY PIG PARTY!!" Musk wrote.

"Time for a new political party that actually cares about the people."

"If this ...