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

On Wednesday afternoon, Donald Trump’s granddaughter, Kai Trump, posted a photo of the entire family clan at their estate in Mar-a-Lago, including all of the president-elect’s children, their spouses,

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.