Musk has moved with lightning speed to try to remake the federal government. Many Democrats and even some Republicans say his efforts are unlawful.

Elon Musk will work under President Donald Trump as a “special government employee,” designating Musk as an unpaid employee of the federal government with fewer restrictions than full-time employees, according to the White House, as Musk’s so-called Department Of Government Efficiency has involved itself in multiple federal agencies in recent days.

President Trump made Elon Musk, head of the Department of Government Efficiency, a 'special government employee' at the White House. Here's what that means.