You have an expectation of privacy in location data that reveals your movements in the physical world, and even short-term surveillance of these movements is a search subject to the Fourth Amendment, the U.S. Supreme Court ruled today in Chatrie v. United States. The case involved geofence warrants...
Nah, that’s public space and such. Flock will need specific legislation to defeat which is a problem when most congress critters are bought and paid for.