Hundreds of thousands of migrants lost scheduled appointments after CBP One app was disabled, creating uncertainty at the US-Mexico border.

Outside Tijuana's customs facility and its coveted access to U.S. soil, migrants sat in disbelief this week, their futures feeling much darker and uncertain.

“We will be responsive, accountable, open and honest and rebuild trust within this community. Our momentum is great, but we must keep running up the score to make sure that Dallas is at the top of the leaderboard, which is where we belong.” — Kimberly Bizor Tolbert, who was named Dallas' city manager. (Thursday, The Dallas Morning News)

The initial blow came with the end of CBP One, stranding thousands of asylum seekers with and without appointments

U.S. Customs and Border Protection announced Monday that the CBP One app that worked as recently as that morning would no longer be used to admit migrants. Tens of thousands of appointments were canceled.

WASHINGTON (AP) — President Donald Trump’s promises to beef up security at the southern border with Mexico began taking effect soon after he was inaugurated Monday, making good on his defining political promise to crack down on immigration and marking another wild swing in White House policy on the divisive issue.