Elon Musk warned that US President Donald Trumps tariffs could push the US into recession by the second half of 2025, igniting a bitter feud between the former allies. Teslas shares plunged $150 billion after Trump accused Musk of betraying the administration over a tax bill Musk says he never saw.

Although Musk had previously mentioned using a "small amount once every other week," the billionaire X owner may have been using ketamine frequently enough on President Donald Trump 's campaign trail for the drug to start causing some health issues, according to reporting from The New York Times.