The United States criminal justice system is governed by various sets of policies and practices developed from federal statues, regulations, and case law. Interpretation of these policies and practices is ultimately adjudicated by the Supreme Court of the United States, and that court’s decisions affect many practical, on-the-job components of everyday criminal justice professionals. For example, whether and how officers may legally stop, search, and seize evidence. As such, it is essential for a criminal justice professional to understand two things: first, how Supreme Court decisions impact a criminal justice professional’s everyday job in significant ways; and, second, how leadership and administrators in criminal justice take action within their organizations to enforce the court’s decisions.