Migrants are frustrated with the border app, even after its latest overhaul

A group of Venezuelan men, including Luis Suárez and Carlos Carrillo Zambrano (pictured in the foreground) at the Paso del Norte International Bridge in Ciudad Juárez, Mexico. They are among many migrants who say that the CBP One app remains riddled with glitches despite a recent update. (Joel Rose/NPR)

CIUDAD JUÁREZ, Mexico — At the foot of the Paso del Norte International Bridge, a half-dozen young men are hunched over their phones. They're trying to sign up for a coveted appointment for an interview at the U.S. port of entry just across the bridge in El Paso, Texas.

One by one, they look up in disappointment, their screens showing a familiar message: "system error."