Supported by Trump Approved a Nvidia Chip for Sale in China. Beijing Doesn’t Want It. The U.S. tech giant’s powerful H200 chip seemed poised to boost Beijing’s A.I. ambitions, but not a single one has been purchased in China. When President Trump announced late last year that Nvidia could sell one of its most powerful chips to China, the deal looked like a rare win-win in a fraying geopolitical re...