In a stunning political twist, Elon Musk Turns on Trump Over ‘Big Beautiful Bill’: Rift Deepens Ahead of Key Vote. Billionaire entrepreneur Elon Musk has launched a fiery campaign against former ally and U.S. President Donald Trump’s hallmark legislation the “Big Beautiful Bill.” Once a trusted insider in Trump’s administration, Musk has now become one of its loudest critics, accusing the bill of driving America into “debt slavery” while threatening the future of electric vehicles and Tesla.