As Mr. Musk entered President Trump’s orbit, his private life grew increasingly tumultuous and his drug use was more intense than previously known.

As the Department of Government Efficiency leader steps away from the White House, Elon Musk talks with "Sunday Morning" about why he believes Trump's proposed budget clashes with his team's efforts to slash the functions of government.

After 130 days spent fighting the federal government, Elon Musk turned up with a black eye at the White House on Friday for his last day as a “special government employee.” If you squinted, you could see it: His right eye socket was puffy and empurpled. No doubt about it, that was a big, fat shiner.