If they are going to do this, they really ought to corroborate the face recognition with fingerprints. Many people have unrelated doppelgangers, even if an AI algorithm was near perfect: https://twinstrangers.net/

You can read all about USCBP policies on the use facial recognition

https://www.dhs.gov/sites/default/files/publications/privacy...

It would appear the software returns a lot of “potential matches” with propensity scores and demographic and recording information and it’s up to the agent to make the final determination.

It’s more a tool to find potential matches rather than a program that pops up and says “this is who this person is”

Identical twins are a thing as well.