The CBP One app was set up under the Biden administration to create an orderly way for migrants to enter the U.S. and to reduce illegal border crossings.

As President Donald Trump took office for the second time on Monday, U.S. Customs and Border Protection (CBP) announced the discontinuation of the CBP One app. The app, which allowed undocumented individuals “to submit advance information and schedule appointments at eight southwest border ports of entry,

Since CBP One app was fully rolled out in January 2023, more than half a million immigrants have been admitted into the United States.