Overview

• Illinois Secretary of State Alexi Giannoulias confirmed on June 12 that Mount Prospect police shared automatic license plate reader data with a Texas sheriff’s office tracking a woman after a self-administered abortion, violating a 2023 state law.
• An audit by Giannoulias’ office found 262 immigration-related searches using Mount Prospect’s plate reader network between mid-January and April 2025.
• Flock Safety has blocked access for 46 out-of-state agencies that violated Illinois law and introduced automated flagging to deny requests linked to abortion or immigration investigations.
• Mount Prospect Police Department has withdrawn from the Flock Safety program following the discovery of unauthorized data sharing.
• The Secretary of State’s office is auditing all Illinois law enforcement license plate reader systems to ensure compliance and prevent further unlawful data distribution.