No. of Recommendations: 2
They do seem to have a facial recognition database, but I've never heard of them using that in the field.
The guy that was rousted in Minneapolis said the agents wanted to scan his face. Initially, he refused. But, he said, they didn't want to look at his passport, on his phone.
Years ago, the FBI announced that you could write to them to see if they had a file on you. Thing was, if they said that they didn't have a file on you, they would start one, to see why you asked.
Could be the same thing here. Scan a guy's face, putting him in the database. Then the next time they roust the same guy, they say "you're in the database. you win a one way trip to El Salvador".
Steve