On his first day in office, President Trump shut down the CBP One mobile application that facilitated the legal entry of migrants into the U.S. at certain ports of entry. Why it matters: Thousands of people are left stranded in Mexico,

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.

U.S. Customs and Border Protection estimates nearly 300,000 migrants are waiting on the Mexican side of the border trying to seek asylum.

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.

CBP One — the government-run app for asylum seekers at the border — has been abruptly shuttered after a series of executive orders signed by President Donald Trump.

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.

"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.

Just hours after the inauguration, migrants with CBP One appointments along the U.S.-Mexico border learned that all CBP One appointments were canceled.

A cadre of U.S. Customs and Border Protection officers marched in SWAT-like formation to an international bridge Tuesday in the Rio Grande Valley on the first full day of President Donald Trump's second term.

Trump administration officials minutes after the new president took office on Monday shut down a mobile app for migrants to make appointments at the U.S.-Mexico border. By shutting down the CBP One app,

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,