Separate warnings by the chipmaking giant and the chairman of the Federal Reserve about the impact of White House policies contributed to another sell-off on Wall Street.

Over the last trading session, markets reacted negatively to the news that Nvidia would need a new license to export H20 chips — originally engineered to skirt

U.S. stocks fell Wednesday after Nvidia warned new restrictions on exports to China will chisel billions of dollars off its results, while companies around the world said President Donald Trump’s trade war is clouding forecasts for how they and the economy will do this year.