U.S. figures show that San Diego became the busiest corridor for illegal crossings in April. It is the fifth region to hold that distinction in two years, a sign of how quickly migration routes are changing. Routes were remarkably stable until just a short time ago. San Diego was the busiest Border Patrol sector for decades until more enforcement pushed migrants to Tucson, Arizona, the top spot by 1998. Rio Grande Valley in South Texas saw the most activity from 2013 to June 2022. Many migrants say San Diego is the easiest and least dangerous spot to enter the United States.
