https://www.techdirt.com/articles/20191104/13391043319/aclu-sues-doj-over-facial-recognition-documents.shtml

It's no secret the federal government is using facial recognition tech. The DHS wants to use it at all ports of entry (including airports) on pretty much every traveler. Amazon wants every government agency possible to buy its version of the tech, even as the company (and the agencies it hopes to supply) undergo Congressional investigations. And the FBI's facial recognition database has been growing steadily since 2014, outpacing required Privacy Impact Assessments and the FBI's willingness to vet the accuracy of its search tools.

The public would definitely like to know more about the government's use of biometric tracking, but the government's way less interested in talking about it. The ACLU filed a FOIA request in January seeking biometric/facial recognition documents held by the FBI and DEA. Those requests have been ignored for 10 months.