A U.S. federal judge ruled that Flock's automated license plate reader (ALPR) cameras, and similar systems with continuously updated location histories, enable indiscriminate mass surveillance. The judge questioned why the government needs to know everyone's whereabouts constantly. He emphasized that while friends might share observations, law enforcement tracking a vehicle for 30 days with photographic evidence is constitutionally problematic. Even though cell phones are visible in public, passively cataloging movements over time for any purpose is a privacy violation. The ruling noted that the surveillance isn't limited to stationary cameras, as mobile ALPR systems and potential drone fleets can track vehicles. Officer Alaniz's use of Flock's travel history to pull over a driver led to drug charges, but the judge suppressed all evidence derived from this unconstitutional search. Flock expects the ruling to be appealed and overturned, stating it doesn't set controlling precedent. In response, Senator Bernie Sanders introduced the Ban Flock Act, which would prohibit federal agencies from using ALPR systems without explicit authorization. The bill also allows withholding federal grants from state and local governments using these technologies. The proposed legislation, with co-sponsors Alexandria Ocasio-Cortez and Jeff Merkley, covers all ALPR systems except for toll collection and specific future congressional approvals with limited data retention.