In Martinez's case, the face scan didn't find a match and it wasn't until he produced his U.S. passport, which he said he carried for fear of such an encounter, that federal agents let him go. It operates with a deliberately high-matching threshold," and uses only some immigration data. Body-camera video could help clarify events surrounding federal agents’ killing of Pretti, who was filming immigration agents with his cellphone when they shot him in the back. Congress last year authorized U.S. Customs and Border Protection to get more than $2.7 billion to build out border surveillance systems and add in AI and other emerging technologies. On Wednesday, the Trump administration disclosed it's using Palantir’s AI models to sift through immigration enforcement tips submitted to its tip line.