Douglas Bruce prison mugshotColorado Department of Corrections Douglas Bruce, known as the father of Colorado’s Taxpayer’s Bill of Rights, is due before a parole board on Thursday as he continues serving a two-year prison sentence. The Colorado Department of Corrections says Bruce, 66, is scheduled go before the board at the Delta Correctional Center, where he is being held. Bruce, a former legislator, was sentenced to prison in March for probation violations stemming from a 2012 felony tax evasion conviction. Judge Sheila A.