Elon Musk said a new political party he has been threatening to start up “is formed,” a day after President Donald Trump signed a tax-cut and spending bill that the Tesla Inc. billionaire chief executive officer has denounced.

Elon Musk is starting his own political party, called the America Party, in response to Congress passing Trump's domestic policy bill. Musk, a former adviser to Trump, left his position in the administration after disagreeing with the president on the 'Big,

Their escalating feud threatens critical parts of the billionaire’s business empire — and leaves Republican legislators caught in a tussle between the two.