Elon Musk has long railed against the U.S. government, saying a crushing number of federal probes and safety programs have stymied Tesla, his electric car company, and its efforts to create fleets of robotaxis and other self-driving automobiles.

Brian Mulberry, client portfolio manager at Zacks Investment Management, said that with Tesla CEO Elon Musk now "live-tweeting his current responsibilities inside the government," it's hard to avoid that "key man risk" that comes with Musk being so closely tied to the EV maker's brand.

It’s not draconian or radical,” the billionaire said in a lengthy question-and-answer session alongside President Trump that sought to make the case for his Department of Government Efficiency.

President Donald Trump and Elon Musk came together in the White House on Tuesday for Trump to sign an executive order concerning the billionaire’s work leading the Department of Government Efficiency andwanting federal agencies to work with him.

President Trump and Elon Musk held a joint appearance in the Oval Office, with Trump signing an executive order aimed at downsizing the federal workforce.