When Huawei unveiled its new flagship smartphone earlier this month, Chinese consumers discovered a device that went far beyond expectations of what the sanctioned phone maker could achieve technologically. What American officials discovered, on the other hand, was a headache.  The SMIC chip inside a Huawei Mate 60 Pro smartphone. Credit:微机分WekiHome Since 2019, the U.S. has sought to undermine China’s advances in several high-tech sectors via a litany of restrictions. Sanction