Over the last 16 years, Musk's business deals with the government total nearly $20 billion, according to federal contracting data.

Billionaires Elon Musk and Vivek Ramaswamy will head an effort, dubbed DOGE, to reduce wasteful federal spending. Here's what it's about.

Elon Musk has grown about $105 billion richer this year, boosting his net worth to a near-record $335 billion at Monday's market close.