Federal parole in the United States was a system that existed prior to the Sentencing Reform Act. Parole of federal prisoners began after enactment of legislation on June 25, 1910.[1] Under parole, prisoners were eligible for release before their sentences were complete. Parole boards under the United States Parole Commission determined whether a prisoner should be released and whether or not a parolee who violated parole should be sent back to prison. Federal parole has been abolished, but the parole statutes continue to apply to prisoners who were grandfathered in.