A worker miniature is placed among printed circuit boards with semiconductor chips, in this illustration picture taken July 5, 2023. REUTERS/Florence Lo/Illustration Acquire Licensing Rights Aug 31 (Reuters) – The Biden administration "has not blocked chip sales to the Middle East," a U.S. Department of Commerce spokesperson said on Thursday, after disclosures that Washington had expanded export license requirements for Nvidia (NVDA.O) and Advanced Micro Devices (AMD.O) artificial-intelligence chips. Nvidia revealed the new rules in a regulatory filing earlier this week. A person familiar with the matter confirmed on Wednesday that AMD is affected by the change. The Commerce Department…