Sentence:  Petitioner , who claims to be a conscientious objector , contends that he was denied <WSD>due</WSD> process , both in the proceedings before a hearing officer of the Department of Justice and at trial . 
Meaning of the word marked with <WSD> tags:  (law) the administration of justice according to established rules and principles; based on the principle that a person cannot be deprived of life or liberty or property without appropriate legal procedures and safeguards