This resource offers extensive updates on the leading Supreme Court cases impacting law enforcement in the United States, creating a must-have reference for police officers to stay up-to-date and have a strong understanding of the law and their function within it. All cases are briefed in a common format to allow for comparisons among cases and include facts, relevant issues, and the Court’s decision and reasoning. The significance of each case is also explained, making clear its impact on citizens and law enforcement.This book provides students and practitioners with historical and social context for their role in criminal justice and the legal guidelines that should be followed in day-to-day policing activities.