Musk's Department of Government Efficiency has laid off thousands of federal workers and shuttered foreign aid programs.

If he’d never given away a dime or sold a share of the software giant, Gates would have nearly 10 times more leftover to give away.

But now, the Trump administration has suddenly halted PEPFAR five years early. Researchers estimate that without the program, an additional 1 million children will be infected with HIV over the next five years, an additional 500,000 will die from AIDS, and 2.8 million will be orphaned, according to The Lancet.