The Bureau of Industry and Security (BIS) of the U.S. Department of Commerce has rescinded the "Verified End-User" (VEU) authorization for TSMC's Nanjing plant, with the decision set to take effect on December 31, 2025. This development signifies that TSMC's Nanjing plant will no longer enjoy the privilege of freely exporting key equipment and materials subject to U.S. export controls. Instead, each shipment of equipment will now require a separate license. TSMC has responded by stating that it is currently evaluating the situation and taking necessary steps, including engaging with the U.S. government, to ensure the uninterrupted operation of its Nanjing plant. This action mirrors the U.S.'s previous move to revoke VEU status from factories owned by Samsung Electronics and others in Mainland China, reflecting a broader strategy to tighten export controls on China's access to advanced semiconductors and manufacturing equipment. The withdrawal of VEU authorization introduces new uncertainties for TSMC's Nanjing plant, particularly in areas such as spare parts replacement, equipment maintenance, and chemical replenishment, which could potentially impact the production capacity of its older-generation foundry.