ICE and CBP are using facial recognition technology to facilitate President Trump’s mass deportation campaign. With a smartphone app, immigration officers can scan faces of people they encounter and quickly search those faces against 200 million images stored in several government databases that are “notoriously error-filled,” according to Nathan Freed Wessler, deputy director of the ACLU’s Speech, Privacy, and Technology Project. “It’s being used on the street in ways that are dangerous, that are totally unprecedented in this country, and that are, frankly, blatantly illegal,” he adds.