The CBP One entry programme, instituted by President Joe Biden, had allowed thousands of migrants to schedule appointments at entry points across the US-Mexico border.

The CBP One app has been wildly popular. It is an online lottery system to give appointments to 1,450 people a day at eight border crossings.

CBP One, a border app that has allowed nearly 1 million people to legally enter the United States with eligibility to work, was abruptly shut down on Monday, shortly after President-elect Donald Trump took office.

During the inauguration of Donald Trump as the 47th President of the United States, the CBP One mobile application, a tool used by thousands of migrants to schedule appointments at the border, ceased to be operational.

"The first 100 days are going to be the most aggressive, change oriented policy proposals and procedures that we've ever seen," KOAT political expert Brian Sanderoff said.

Migrants who waited months to cross the U.S. border with Mexico learned their CBP One appointments had been canceled moments after Donald Trump was sworn in as president.

The CBP One app has been highly popular, functioning as an online lottery system that grants appointments to 1,450 people daily at eight border crossings. These individuals enter the U.S. under immigration "parole," a presidential authority that Joe Biden has exercised more frequently than any other president since its creation in 1952.

In a move fulfilling one of now-President Donald Trump’s campaign promises, the Trump administration shuttered the use of CBP One, a President Joe Biden-era app meant to help process migrants seeking to apply for asylum in the U.S.

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.

Illegal crossings at the southern border were lower in December 2024 than in December 2020, Border Patrol data showed.