Trump’s action, hours after he was sworn in to a second term, echoed his directive in 2017, when he announced that the U.S. would abandon the global Paris accord. The pact is aimed at limiting long-term global warming to 2.7 degrees Fahrenheit (1.5 degrees Celsius) above pre-industrial levels or, failing that, keeping temperatures at least well below 3.6 degrees Fahrenheit (2 degrees Celsius) above pre-industrial levels.
Trump also signed a letter to the United Nations indicating his intention to withdraw from the 2015 agreement, which allows nations to provide targets to cut their own emissions of greenhouse gases from the burning of coal, oil and natural gas. Those targets are supposed to become more stringent over time, with countries facing a February 2025 deadline for new individual plans. The outgoing Biden administration last month offered a plan to cut U.S. greenhouse gas emissions by more than 60% by 2035.