Katie Miller, formerly an advisor for Elon Musk's Department of Government Efficiency (DOGE), has left the White House to work for him full-time. Her departure follows Musk's 130-day stint as a special government employee.

Musk said he had "done enough" and that he will step away from the Department of Government Efficiency (DOGE), the inner-government group that has slashed federal budgets and workforces. As he prepared his goodbyes, Newsweek looked back at Musk's time in government and asked experts on whether he will have a lasting impact.