I read the source article, it mentioned a review process that DHS was supposed to go through before installing the cameras, but didn’t. It sounds like it is something specific to these cameras. Also from looking at the linked article, they are not your garden variety cameras, they are very conspicuous face scanners that you have to look directly at as you board, kind of like the ones they have at certain international entry points.
ETA: maybe the mandated review process was part of the legislation funding the program?
