AP Photo
In this Aug. 11, 2017, photo U.S. Customs and Border Patrol agents pursue a group of immigrants who are suspected of crossing into the United States illegally, along the Rio Grande near Granjeno, Texas. The election of President Donald Trump contributed to a dramatic downturn in migration, causing the number of arrests at the border to hit an all-time low in April and helping the U.S. end the 2017 fiscal year at a 45-year low. But since bottoming out in April, the number of immigrants caught at the southern border has been increasing monthly. (AP Photo/Eric Gay)