The bill enacts Part III of Chapter 1 of Title 33 of the Louisiana Revised Statutes, establishing a prohibition on sanctuary policies for illegal immigration. It defines key terms such as "federal immigration agency," "immigration detainer," and "sanctuary policy," and mandates that state entities, law enforcement agencies, and local governmental entities cannot adopt or maintain any sanctuary policies that impede cooperation with federal immigration authorities. The bill outlines the responsibilities of law enforcement agencies regarding immigration detainers, including notifying judges of detainees subject to such detainers and ensuring compliance with federal requests.

Additionally, the bill provides for enforcement mechanisms, allowing the attorney general to file suit against local entities that violate the provisions. If a violation is found, the court can enjoin the unlawful sanctuary policy and maintain jurisdiction to enforce its orders. The act will take effect upon the governor's signature or after the designated time period for bills to become law without a signature, ensuring that the provisions are implemented promptly.