SAN DIEGO — Migrants waiting to enter the US using former Joe Biden’s CBP One app broke down in tears after their appointments were canceled the moment President Trump took office Monday – just the first of the sweeping border actions the new administration prepared for the first day.

The CBP One app has disappeared for migrants and The Trump administration will reinstate its “Remain in Mexico” policy.

Now what we’re doing is unifying nonprofits that have resources to support ‘Know Your Rights’ campaigns for immigrants in our community.” - Karlha Arias

Trump campaigned on border security promises, and he and his allies argue that his electoral win is an endorsement of his upcoming actions on the issue.

Trump promises to sign executive actions to address immigration and border security. Some will likely spark legal battles.

President-elect Donald Trump's incoming administration is reconsidering plans for immigration raids in Chicago next week after details were leaked, Trump's “border czar” Tom Homan told the Washington Post in an interview on Saturday.

The president’s Day 1 actions included directives that fly in the face of legal limits on involving the military in domestic operations and the constitutional guarantee of birthright citizenship.

The US president tasks the military with aiding border security, issues a ban on asylum and aims to restrict citizenship for children born on US soil.

The CBP One app that worked as recently as that morning would no longer be used to admit migrants after facilitating entry for nearly 1 million people since23.

State and local leaders across the country are bracing for a tidal wave of aggressive immigration policies and possible mass deportations that President Donald Trump has vowed to enact in the hours and days following his inauguration Monday.

In a concrete sign of how the changes quickly played out, migrants who had appointments to enter the U.S. using the CBP One app saw them canceled minutes after Trump was sworn in, and Mexico