The feud reignited on Monday when Musk, who spent hundreds of millions on Trump's re-election, renewed his criticism of Trump's tax-cut and spending bill, which would eliminate subsidies for electric vehicle purchases that have benefited Tesla, the leading U.S. EV maker. That bill passed the Senate by a narrow margin midday Tuesday.

Musk’s first-among-equals status as head of the Department of Government Efficiency at the start of Trump’s second administration is now a memory. He’s so livid over Trump’s debt- and deficit-inflating “big,