Editor's note: This story has been updated with additional comments from bishops and Catholic Relief Services.
In one of his first acts in office, President Joe Biden began the process for the U.S. to rejoin the Paris Agreement on climate change and to reestablish the scores of environmental regulations undone by his predecessor in the Oval Office.
Biden, seated at the Resolute Desk in the West Wing of the White House, signed the notice to re-enter the Paris accord Jan. 20 just hours after taking the oath of office. It was later deposited with the United Nations, and under the agreement, will take effect in 30 days, or Feb. 19. The U.S. will also have to submit a new greenhouse gas emissions-reduction plan.