WASHINGTON, July 5 (Reuters) - The dispute between Republican President Donald Trump and his main campaign financier Elon Musk took another fractious turn on Saturday when the space and automotive billionaire announced the formation of a new political party, saying Trump's "big, beautiful" tax bill would bankrupt America.

"The America Party is formed to give you back your freedom," Musk said, days after Trump debated deporting him.

Musk previously threatened to start the new "America Party" last week, expressing his disapproval of Trump's "One Big Beautiful Bill Act" and declaring that he would form a new political party if it passed. This spending bill ultimately did pass, with Trump signing it into law on Friday, July 4.