The president moved quickly to cancel the CPB One app, which allowed migrants to schedule appointments to gain entry into the United States, turning away potentially tens of thousands of migrants.

The Trump administration Monday ended use of a border app called CBP One that has allowed nearly 1 million people to legally enter the United States with eligibility to work. A notice on the website of Customs and Border Protection Monday just after Trump was sworn in let users know that the app that had been used to allow migrants to schedule appointments at eight southwest border ports of entry is no longer available. The notice said that existing appointments have been cancelled.

'Effective January 20, 2025, the functionalities of CBP One that previously allowed undocumented aliens to submit advance information and schedule appointments at eight southwest border ports of entry is no longer available, and existing appointments have been cancelled,' the CBP website states.