Gina Raimondo, US secretary of Commerce, from left, Antony Blinken, U.S. secretary of state, and Katherine Tai, US trade representative, at a discussion during the US-EU Trade and Technology Council meeting in College Park, Maryland, US, on Monday, Dec. 5, 2022. Shares of Nvidia and Advanced Micro Devices both fell more than 2% in early trading after The Wall Street Journal reported the federal government is weighing new restrictions on exports of sophisticated chips used in artificial intelligence computing to China. The export restrictions under consideration would be imposed by the Commerce Department and would come after the U.S. government...