The US has revoked Taiwan Semiconductor Manufacturing Co.’s authorization to freely ship essential gear to its main Chinese chipmaking base, potentially curtailing its production capabilities at that older-generation facility.American officials recently informed TSMC of their decision to end the Taiwanese chipmaker’s so-called validated end user, or VEU, status for its Nanjing site. The action mirrors steps the US took to revoke VEU designations for China facilities owned by Samsung Electronics ...