The moves represent a first step in healing one of the deepest rifts between the United States and the rest of the world after Mr. Trump defiantly rejected the Paris pact and seemed to relish his administration’s push to weaken or undo major domestic climate policies.
Mr. Biden has elevated tackling the climate crisis among his highest priorities. In addition to curbing global warming, he has vowed that ending the coronavirus pandemic, restoring the economy and addressing racial injustice will be the central causes of his administration.
“We’re going to combat climate change in a way we have not before,” Mr. Biden said in the Oval Office on Wednesday evening, just before signing the executive orders. Even so, he cautioned: “There are just executive actions. They are important but we’re going to need legislation for a lot of the things we’re going to do.”