U.S. Border Patrol agents move through a crowd of migrants that have waited between two border walls for days to apply for asylum, as they decide who to take next to processing Friday, May 12, 2023, in San Diego. Hundreds of migrants remain waiting between the two walls, many for days. The U.S. entered a new immigration enforcement era Friday, ending a three-year-old asylum restriction and enacting a set of strict new rules that the Biden administration hopes will stabilize the U.S.-Mexico border and push migrants to apply for protections where they are, skipping the dangerous journey north. (AP Photo/Gregory Bull)