Musk's "off-boarding will begin tonight," a White House official told Reuters on Wednesday. Under US law, special government employees in the executive branch are limited to serving 130 days in a 365-day period. They are subject to more lenient ethics rules than other federal employees and officials.

President Donald Trump says he's "very disappointed" with Elon Musk after the tech billionaire slammed the president's signature tax and spending bill and suggested that Musk, who recently left the administration,