Automated license plate reader (ALPR) technology deployed by police agencies nationwide may be used to identify vehicles associated with immigration enforcement operations, according to research from the Electronic Frontier Foundation (EFF). The watchdog organization has documented that law enforcement agencies using Flock Safety ALPR systems are comparing license plate data against hotlists—curated lists of vehicles flagged for surveillance—that target individuals on behalf of Immigration and Customs Enforcement (ICE), as reported by EFF. When vehicles pass ALPR cameras, their license plates are captured and instantly cross-referenced against these hotlists in real-time, according to EFF's findings. The practice raises significant concerns about warrantless surveillance and the potential for local police infrastructure to facilitate federal immigration enforcement operations without explicit public knowledge or consent. ALPR technology has long been the subject of privacy advocacy scrutiny. The systems capture millions of license plate images daily, creating searchable databases that can track vehicle movements across jurisdictions. The use of these databases for immigration enforcement purposes represents an expansion of how ALPR data is operationalized beyond traditional law enforcement applications such as locating stolen vehicles or identifying vehicles associated with criminal investigations. Civil liberties groups have previously warned that ALPR systems create permanent records of citizens' movements and can enable mass surveillance at scale. The integration of ALPR hotlists with ICE operations appears to extend these concerns into immigration enforcement, potentially allowing local police cameras to serve as an extended surveillance apparatus for federal immigration authorities. Flock Safety, a leading provider of ALPR technology, operates thousands of cameras across the United States on behalf of municipal police departments, sheriff's offices, and other law enforcement agencies. The company's systems are designed to allow agencies to customize hotlists and share data across jurisdictional boundaries. EFF's reporting suggests that this infrastructure is being leveraged for immigration-related surveillance operations. The findings underscore ongoing questions about data governance, interagency information sharing, and the extent to which local law enforcement technology is repurposed for federal priorities without transparent public policies or community input.