The Hamas Sanctions Act of 2023 is a comprehensive sanctions and enforcement bill that targets Hamas, related Palestinian groups, and entities supporting terrorism. The legislation prohibits U.S. government operations in Gaza and the West Bank, suspends foreign assistance to Gaza until Hamas loses control, and requires the President to sanction foreign persons providing services to Hamas members in allied countries and NATO nations. The bill also restricts financial transactions benefiting Iran and extends existing sanctions on terrorist organizations that use civilians as human shields, specifically adding Palestine Islamic Jihad to the list of designated groups. The legislation requires multiple reports from the State Department and Department of Defense within 90 to 180 days of enactment and annually thereafter, documenting Hamas operations in allied countries, Iran-related financial transactions, and the use of human shields by terrorist groups. There is no specific dollar amount of funding authorized, but the bill effectively freezes assistance to Gaza and restricts U.S. diplomatic operations in the region until certain conditions are met.