The administration of President Joe Biden on Friday announced it would restore protections under the Endangered Species Act, a law credited with saving iconic animals like the gray wolf and bald eagle, which were loosened by his predecessor Donald Trump. Conservation groups welcomed the move but said they were concerned about how long the reversal might take. "The US Fish and Wildlife Service (FWS) is committed to working with diverse federal, Tribal, state and industry partners to not only protect and recover America's imperiled wildlife but to ensure cornerstone laws like the Endangered Species Act are helping us meet 21st century challenges," said the agency's Martha Williams. The FWS now proposes to undo those changes, saying it would formulate new rules in the coming months.