https://techcrunch.com/2020/09/02/customs-border-protection-airport-border-face-data/

A government watchdog has criticized U.S. border authorities for failing to properly disclose the agency’s use of facial recognition at airports, which included instructions on how Americans can opt out.

U.S. Customs and Border Protection (CBP), tasked with protecting the border and screening immigrants, has deployed its face-scanning technology in 27 U.S. airports as part of its biometric entry-exit program.