The U.S. has withdrawn from the UN Framework Convention on Climate Change (UNFCCC), a move criticized by European officials and environmental groups as detrimental to U.S. security and prosperity. This action follows the U.S. exit from the Paris Agreement and includes withdrawal from the Green Climate Fund and the Intergovernmental Panel on Climate Change (IPCC). Critics argue these decisions disregard environmental concerns and aim to undermine global climate science efforts, despite the U.S. being a major historical emitter.