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.

Shares of electric vehicle maker Tesla, which is headed by Elon Musk, slumped Tuesday as the war of words between billionaire and President Donald Trump over the big bill of tax breaks and spending cuts heats up again,