The tech billionaire formally declared the "America Party" after President Trump signed his signature bill, setting the stage for a dramatic political confrontation.

It's no longer just talk. After weeks of floating the idea from the very public and very acrimonious blowup of his relationship with President Donald Trump, Elon Musk has now started a third political party.

A public feud between President Donald Trump and his on-again, off-again ally, billionaire Elon Musk, reignited this week after an apparent truce lasted less than a month.