Nvidia Says U.S. Will Restrict Sales of More of Its A.I. Chips to China

Nvidia said on Tuesday that the U.S. government had blocked the sale of some of its artificial intelligence chips to China without a license and would begin requiring a license for future sales.

The restrictions are the first major limits that President Trump’s administration has put on semiconductor sales abroad. It raises the possibility that Nvidia’s sales to China will evaporate in the coming months, bringing an end to a business that has contracted as the United States has curbed chip exports to its geopolitical rival . . .