The latest hot spot for illegal border crossings is San Diego. But routes change quickly
![The latest hot spot for illegal border crossings is San Diego. But routes change quickly](https://bloximages.chicago2.vip.townnews.com/gazettetimes.com/content/tncms/assets/v3/editorial/f/14/f14abd48-a20f-5cb7-a7c1-ddfc59e487c9/664c93df64370.image.jpg?resize=300%2C200)
San Diego became the busiest corridor for illegal crossings in April, the fifth region to hold that distinction in two years and a sign of how quickly migration routes change.