By MOLLY O'TOOLE | Los Angeles Times | Published: January 22, 2021 TIJUANA, Mexico (Tribune News Service) — The morning sunlight streamed undisturbed over the concrete expanse known as El Chaparral, one of the busiest border crossings in the world, days before the inauguration of President Joe Biden. Taxi drivers chatted idly. A few people hovered around the silent turnstiles that marked the official entry from northern Mexico into Southern California — and the possible pathway to a long-awaited exit from the Trump era. Suddenly a gate opened, and Gabi and her husband rushed over to once again extend a temporary residency visa from the Mexican government. They and their three kids fled El Salvador in 2019 after her nephew was murdered for refusing to join a gang. Asking for asylum in the U.S., the family instead ended up sleeping on the Tijuana streets after U.S. officials forced them back over the border under a Trump policy known as "Remain in Mexico."