The American criminal justice system is from the basis of the constitution of the United States. Several amendments have been made over the years, for the criminal justice system so that it can reflect on the beliefs and needs of each generation.
The Administration of criminal justice in United States has faced several changes which include the abolishment of dead penalty and ensuring the innocent are no longer penalized, as has been the case for many years.
The historic American values guide and define democracy in United States including, individual liberty, preservation of constitutional rights, respect to personal privacy, and protection of private property and free enterprise. Such values guide development of public policy in all areas of government, including criminal justice.