The Feeral Sentencing Guidelines are rules that set out a uniform sentencing policy for convicted defendants in the United States federal court system. The Guidelines are the product of the United States Sentencing Commission and are part of an overall federal sentencing reform package that took effect in the mid-1980s. The implementation of this reform package was the result of bipartisan cooperation, led chiefly by Senator Edward Kennedy, as Chair of the Senate Judiciary Committee, and Attorney General Edwin Meese. Their primary joint goal was to alleviate sentencing disparities that research had indicated was prevalent in the existing sentencing system, and the guidelines reform was specifically intended to provide for determinate sentencing. This refers to sentencing whose actual limits are determined at the time the sentence is imposed, as opposed to indeterminate sentencing, in which a sentence with a maximum (and, perhaps, a minimum) is pronounced but the actual sentence is determined by a parole commission or similar administrative body after the person has started serving their sentence. As part of the guidelines reform, the United States Parole Commission was abolished. In general, indeterminate sentences are believed to support the rehabilitation and specific deterrence models of sentencing while determinate sentences are believed to support the general deterrence and just deserts models of sentencing.