This bill establishes an Office of Subnational Diplomacy within the Department of State, led by a Special Representative for Subnational Diplomacy , to enhance engagement with U.S. subnational governments. The Office aims to improve the ability of State, county, city, and municipal governments to attract foreign investment, counter foreign malign influence, and contribute to U.S. foreign policy priorities. The Special Representative will advise on subnational engagements, coordinate Departmental support for local interactions with foreign entities, and serve as the principal official on these matters. Key responsibilities include advising subnational officials on risks from countries of concern, sharing best practices to build resilience against foreign political interference, and assisting in attracting foreign direct investment and hosting international events. The Office will also focus on building staff capacity for foreign engagement and coordinating with associations of subnational elected leaders to advance U.S. economic interests.