California's attorney general says police agencies that share license plate reader data with out-of-state and federal law enforcement agencies may be violating a state sanctuary law.But in El Cajon, the police department continues to share data with out-of-state agencies.That's led to a disagreement between the police department and the state over how to define a "public agency."On Midday Edition, we sat down with KPBS investigative border reporter Gustavo Solis to hear about the clash over license plate data. And, why El Cajon has become a flashpoint in the fight over immigration.Guest:Gustavo Solis, investigative border reporter, KPBS