Mandatory sentencing policies are legislative efforts that enhance the sentencing provisions for convicted criminal defendants. Sentencing enhancement is achieved by either requiring a sentence of imprisonment, denying the possibility of probation or other community sanction, or by lengthening the actual time served in prison for particular types of criminal offenses. There are a variety of mandatory sentencing policies, but the two primary models of these policies are three-strikes statutes and truth-in-sentencing statutes (TIS). However, other mandatory sentencing provisions, such as violent offender incarceration, are also becoming more popular. Mandatory sentencing policies of all kinds have become quite common in the United States. In fact, by the mid-1990s, all 50 states and the federal government had enacted at least one, and typically several, ...