According to US media reports, the American Chamber of Commerce in China (AmCham China) sent an email to member companies on the 21st, saying that the US Department of Commerce BIS will announce the expansion of export restrictions on Chinese semiconductor companies next Thursday "before the Thanksgiving holiday", which may affect as many as 200 chip companies, covering HBM (high-bandwidth memory) chips and related products such as AI and semiconductors, restricting most U.S. suppliers from shipping to target companies. According to the report, if the news is true, it indicates that the Biden administration is advancing plans to further crack down on China's semiconductor access, even though Trump's second term will begin in January next year. Another set of rules restricting the export of HBM chips to China is expected to be announced next month as part of a broader AI plan.