Tesla (NASDAQ:TSLA) turned lower in early trading on Tuesday after Elon Musk and President Trump bickered again on social media about the government tax and spending bill. Following some complaints from Musk about the financial danger of the tax and spending bill and a teaser on starting a new political party,

Musk, who supported Trump’s campaign and also served as an adviser to the White House, has criticized the tax and spending bill the president is pushing.

Tesla ( TSLA) stock sank as much as 6% before the market open Tuesday as the feud between CEO Elon Musk and President Donald Trump was reignited overnight, with the president once again threatening to cut government subsidies across Elon Musk’s businesses, including Tesla and SpaceX.