The Biden administration has suddenly imperiled China’s ability to produce alternatives to Nvidia’s artificial intelligence chips.Officials at the U.S. Commerce Department in recent months have pressured American chip equipment makers and their suppliers to stop selling to Huawei Technologies, China’s top chip designer, and to the Chinese firm that manufactures Huawei chips. As a result, Huawei hit a snag in recent weeks, struggling to ramp up production of its Ascend AI server chip, according t...