Yesterday, President Trump issued a memorandum on “Withdrawing the United States from International Organizations, Conventions, and Treaties that Are Contrary to the Interests of the United States” (the Memorandum). The Memorandum directs all executive departments and agencies to take immediate steps to effectuate the withdrawal of the United States and cease participating in and funding of 35 non-United Nations (UN) organizations and 31 UN entities that “operate contrary to U.S. national interests, security, economic prosperity, or sovereignty.” Most notably, the Memorandum directs the withdrawal of the U.S. from the Intergovernmental Panel on Climate Change (IPCC) and the United Nations Framework Convention on Climate Change (UNFCCC), a move with potentially far-reaching implications for global climate action, climate multilateralism, and international climate science coordination and reporting. This bulletin identifies the key climate, environment, and energy-related organizations listed in the Memorandum and provides an overview of the differing processes and implications of withdrawing the U.S. from the UNFCCC and the soon to be effected withdrawal from the Paris Agreement. Non-UN Organizations. The U.S. will withdraw from the IPCC and, among others, the following climate, environment, and energy-related non-UN organizations: 24/7 Carbon-Free Energy Compact; Commission for Environmental Cooperation; Inter-American Institute for Global Change Research; Intergovernmental Forum on Mining, Minerals, Metals, and Sustainable Development; Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services; International Energy Forum; International Renewable Energy Agency; International Solar Alliance; International Tropical Timber Organization; International Union for Conservation of Nature; Renewable Energy Policy Network for the 21st Century; and Secretariat of the Pacific Regional Environment Programme. UN Organizations. The U.S. will effectively withdraw from the UNFCCC and, among others, the following climate, environment, and energy-related UN organizations by “ceasing participation in or funding to those entities to the extent permitted by law”: Department of Economic and Social Affairs; International Law Commission; International Trade Centre;…