PROCEDURAL DUE PROCESS:
The DP clauses of the 5th (applicable to the feds) and the 14th (states) amendments provide that the gov't shall not take a person's life, liberty, or property without due process of law. DP contemplates fair process/procedure, which requires at least an opportunity to present objections to the proposed action to a fair, neutral decisionmaker.
Must be a fair, neutral decisionmaker -- Requires a judge to recuse himself when he has actual bias or when there is merely a serious risk of actual bias. A serious risk of actual bias exists when under a realistic appraisal of psychological tendencies and human weakness, the judge's interest poses such a risk of actual bias or prejudice that it must be forbidden.