The United States has the highest rate of incarceration in the world. In 2010, one in forty-eight adults were on probation or parole, and one in 104 adults were in correctional custody. Once convicted, between 70%3 and 89%4 of criminal defendants are sentenced to imprisonment. Since 1986, the number of people imprisoned in the United States has grown from approximately 746,0005 to more than 2.2 million in 2010. These exceedingly high numbers show a trend of increasing imprisonment, starting in the 1980s. Frustrated by the perceived failure of the criminal justice system, the nation almost completely rejected rehabilitation as a goal of sentencing. Congress passed the Sentencing Reform Act of 1984, which implemented determinate sentencing an...