In this paper published by NYSEAN Partner ISEAS – Yusof Ishak Institute, Angel Hsu and Silvia Landa discuss how the US government has withdrawn both domestically and globally from climate and clean energy engagement. This withdrawal has been marked by a dismantling of foreign development assistance, proposed rollbacks of the Inflation Reduction Act, and aggressive tariffs. They assert that these policy shifts undermine the possibility of bilateral clean energy and climate collaboration with Southeast Asian nations.