What source contains specific requirements for law enforcement agencies to have mandatory policies?

The correct source that contains specific requirements for law enforcement agencies to have mandatory policies is the Wisconsin State Statutes. State statutes provide the legal framework within which law enforcement agencies must operate, including directives on how agencies should establish and implement policies addressing various operational areas, such as use of force, citizen complaints, and officer conduct.

These statutes are established and maintained by the state legislature and provide binding legal requirements that do not merely suggest best practices but mandate specific policies that agencies must follow to ensure compliance with state law. Each law enforcement agency must adhere to these statutes to operate legally and effectively within the state's judicial and law enforcement system.

Federal regulations, while also important, typically provide guidelines at a national level and may not specifically address state-level operational requirements for law enforcement. Local ordinances can vary significantly between jurisdictions and might not encompass broader mandatory requirements required by state statutes. Department policies are internal documents that outline the procedures and practices of a specific agency but are developed in accordance with, and not in place of, the mandates provided by state statutes.