In the United States v. Smith case of 1946, the Supreme Court dealt with issues related to judicial immunity and contempt of court. The defendants in this case were U.S District Judge Walter I. Smith and his clerk, who had been convicted for criminal contempt by a federal appellate court after they failed to obey an injunction issued by that court. They appealed their conviction on grounds that it violated their constitutional rights as judges are immune from prosecution for actions taken within their jurisdiction. The Supreme Court reversed the convictions, ruling that while judges may be punished for contemptuous behavior committed outside their official duties or beyond their authority, they cannot be held criminally liable for acts performed within the scope of those duties - even if such acts constitute disobedience to higher courts' orders or rulings. This decision reinforced principles established in earlier cases regarding judicial immunity: Judges must have freedom to act without fear of personal liability so long as they do not exceed clearly defined boundaries set forth by law; however, this protection does not extend to actions taken in bad faith or gross abuse of discretion.

The dissenting opinion in the United States v. Smith case argued that the majority's decision to uphold a contempt of court conviction against Judge Smith was incorrect and violated his constitutional rights. The dissenters believed that Judge Smith should have been allowed to present evidence and witnesses in his defense, rather than being summarily convicted based on an ex parte affidavit from a government attorney. They also disagreed with the majority's interpretation of judicial immunity, arguing that it should protect judges from prosecution for actions taken within their jurisdiction, even if those actions are later found to be erroneous or misguided. Furthermore, they contended that punishing judges for such errors would undermine judicial independence and discourage them from making bold or controversial decisions out of fear of potential reprisals.