President Donald Trump has promised swift action on immigration, asylum and border security as he takes office today.

Border Patrol and Rio Grande Valley residents respond to policy changes under the Trump administration amid ongoing challenges at the southern border.

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.

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.

President Donald Trump has shut down the CBP One app, which was designed to help migrants apply to enter the U.S. legally as asylum-seekers. "The application worked where migrants would schedule an appointment,

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.

President Donald Trump’s plans to curb immigration and beef up border security began taking effect soon after he was inaugurated Monday as he made good on campaign promises.

The orders include declaring a national emergency to deploy military personnel to the border, suspending refugee resettlement and ending birthright citizenship.

President Donald Trump began his term by taking a series of sweeping immigration executive actions Monday that included declaring a national emergency at the US southern border, immediately ending use of a border app called CBP One that had allowed migrants to legally enter the United States,

"Every other state has provided resources and funding to help secure the border, and my border has been absent of that," Rep. Jenifer Johns said.

Trump administration officials are considering deploying as many as 10,000 soldiers to the U.S.-Mexico border, according to an internal government memo.