Legal Guide for Constitutional Issues, Ninth Edition, provides an understanding of federal and state laws and court decisions that are essential to law enforcement officers in their line of work. It presents U.S. Supreme Court decisions up to and including the 2009 term of court. The book discusses the effects of failing to comply with constitutional mandates, and it considers the general limitations on police power, emphasizing the common constitutional questions that confront officers when they are called on to enforce the law. It also covers legal standards relating to detention, arrest, search and seizure, questioning suspects, and pretrial identification procedures. This book is a valuable resource for officers tasked with protecting rights, seeking illegalities, and preparing evidence for use in court. It may also be used in departmental training programs and in colleges that offer courses for in-service and pre-service officers.