Trump has asked aides and advisers if they believe Musk’s recent behavior could be related to his alleged drug use.

Tesla stock, the main source of Musk’s wealth, had almost doubled in value between June 10, 2024, and June 4, 2025, largely in anticipation of the boffo business that his association with Trump would bring. On June 5, the day that Trump mused about canceling his contracts, it plummeted by 14 percent.

Critics have also pointed to a video showing Musk playing with silverware during dinner that they say indicates erratic behavior spurred by drug use.

President Donald Trump was dejected, processing his very public split with the world’s richest man.

Though their war of words on social media has slowed, the world’s richest man and the U.S. president isn’t over yet as Trump vows to sell his Tesla.

Many directors also have particularly close ties to Musk. That includes his brother Kimbal Musk, an entrepreneur and restaurant owner, and Joe Gebbia, a cofounder of Airbnb and a friend of Musk’s. There are no car industry or green energy CEOs in the group, as one might expect at a typical EV company.