Also shutting down of federal agencies without Congress approval and getting access to their data:

"Musk on the call also appeared to claim credit for the shutdown of the U.S. Agency for International Development ... though the executive branch’s legal authority to do so without congressional action is highly in doubt, as the agency’s existence is established in law. Trump on Monday said he didn’t need an act of Congress to shut down USAID.

USAID’s homepage has been shut down for days, as is its X account. Dozens of career staff at the agency have been put on leave, and hundreds have been shut out of agency computer systems. Musk aides have gained access to classified USAID information over the objection of agency security personnel, who were subsequently placed on leave, The Associated Press reported."