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.

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.

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.

About 200 migrants who had their CBP One immigration appointments canceled when President Trump was sworn into office are refusing to leave the San Ysidro border checkpoint until they are seen.

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

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.

People are considering whether to apply for permission to settle in Mexico, return home, or wait to see what Trump comes up with next

President Donald Trump’s administration has lifted restrictions on arrests of undocumented immigrants at or near locations, such as schools, hospitals and churches.

On Monday evening, just hours after Donald Trump’s inauguration, the Senate passed the Laken Riley Act, an extreme bill that would allow for the deportation and detention of any undocumented immigrant merely suspected of a nonviolent crime. And they did it with the help of 12 Democrats.