United States Constitutional criminal procedure is the way the government follows when it investigates and prosecutes people who are accused of breaking the law. This procedure is outlined in the United States Constitution. It is designed to make sure that everyone is safe from illegal actions by the government, and also to make sure that everyone accused of a crime is treated fairly. The Constitution gives the person accused of a crime (defendant) the right to be informed of what they are accused of, to have a chance to defend themselves, and to be treated fairly throughout the process. It also protects the defendant from illegal searches, seizures, and interrogation. Finally, it is designed to make sure that the government does its job properly, so no one is wrongfully accused or punished for something they didn't do.