California, United States of America
The following excerpt is from Betsworth v. Workers' Comp. Appeals Bd., 26 Cal.App.4th 586, 31 Cal.Rptr.2d 664 (Cal. App. 1994):
The area of the law where judges are most likely to end up presiding over their own cases is contempt of court, where they will be both prosecutor and judge. The justification is practical necessity. Judges must act swiftly to protect court proceedings from disruption or one party's attempt to gain an unfair advantage (see e.g., Codispoti v. Pennsylvania (1974) 418 U.S. 506, 513, 94 S.Ct. 2687, 2692, 41 L.Ed.2d 912 [summary contempt power based on need to protect the "integrity of the trial process in the face of an 'actual obstruction of justice' "] ), and there may not be enough time to send for another judge to conduct a minitrial on every such disruption or attempt.
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