The Sentencing Reform Act of 1984 (Title II of the Comprehensive Crime Control Act of 1984) provides for the development of guidelines that will further the basic purposes of criminal punishment: deterrence, incapacitation, just punishment, and rehabilitation. The Act delegates broad authority to the Commission to review and rationalize the federal sentencing process. The Act contains detailed instructions as to how this determination should be made, the most important of which directs the Commission to create categories of offense behavior and offender characteristics. An offense behavior category might consist, for example, of "bank robbery/committed with a gun/$2500 taken." An offender characteristic category might be "offender with one prior conviction not resulting in imprisonment." The Commission is required to prescribe guideline ranges that specify an appropriate sentence for each class of convicted persons determined by coordinating the offense behavior categories with the offender...