Whether the Due Process Clause permits a judge who acted as a one-man grand jury to preside over contempt trials arising from conduct before that same secret investigation.
Holding
No. Due process requires an impartial tribunal, and a judge who investigated, accused, and effectively prosecuted the alleged contemnors could not also try them.
Reasoning
A fair trial before a fair tribunal is a basic requirement of due process. The constitutional safeguard reaches beyond demonstrable actual bias: it also protects against procedures creating a probable temptation for a judge not to hold the balance “nice, clear and true” between the State and the accused. Justice must satisfy the appearance as well as the reality of fairness.
The judge-grand-jury was part of the accusatory process in a way that made him unable to be wholly disinterested in whether the persons he accused were convicted. A judge who investigates suspected crimes, hears secret testimony, forms conclusions about wrongdoing, and initiates contempt charges assumes a role akin to that of a complainant or prosecutor. Fair trials are too important to permit prosecuting judges to serve as trial judges on the charges they initiated.
The Court distinguished the established power of a judge to punish certain contemptuous conduct committed openly in the judge's immediate presence in a courtroom. Under In re Oliver, contempt arising in the secret one-man-grand-jury setting could not be punished summarily; it required a public proceeding with ordinary procedural protections. Once such a full adjudication was required, it had to be conducted by an impartial judge rather than by the judge who conducted the secret inquiry.
The procedure also created concrete evidentiary unfairness. The trial judge's private knowledge and impressions from the secret proceedings could influence his decision more heavily than the evidence introduced at the public hearing. In White's case, the judge expressly relied on White's supposedly insolent and defiant demeanor during the secret examination—an impression not reflected in the public record and not subject to meaningful cross-examination. If the judge's own observations were material, either the accused lost the chance to examine an important witness or the judge effectively became a witness in a case he was deciding.