Final answer:
The law on the books approach to criminal justice emphasizes that criminal justice systems exist to enforce a legal code through the police, courts, and corrections system.
Step-by-step explanation:
The law on the books approach to criminal justice emphasizes that criminal justice systems exist to enforce a legal code. In the United States, the criminal justice system consists of three main branches: the police, the courts, and the corrections system. The police are responsible for identifying and apprehending individuals considered to be criminals, the courts determine the guilt or innocence of those accused of crimes and sentence them, and the corrections system carries out the penalties determined by the courts.