Musk has been so aggressive in pushing his views about Trump’s second term that he’s stepping on the toes of Trump’s transition team and may be overstaying his welcome at Mar-a-Lago, according to two people familiar with the transition who have spent time at the Palm Beach, Florida, resort over the past week.

The world's wealthiest man is the CEO of Tesla and SpaceX, and he has several other roles across his many companies.

Choosing billionaire Elon Musk to be what President-elect Donald Trump calls “our cost cutter” for the U.S. government, is not the first time an American president has empowered a business tycoon to look for ways to dramatically cut federal regulations.