Quercia v. United States

Background

A man was tried and convicted for violating the federal Narcotic Act after Government agents testified and the defendant gave live testimony denying the charges. The Circuit Court of Appeals affirmed the conviction, and the Supreme Court agreed to review whether the trial judge’s instructions to the jury were unfair. At trial the judge told jurors the usual rules about innocent until proven guilty and reasonable doubt, but also reviewed evidence and gave a blunt personal assessment of the defendant’s testimony.

Reasoning

The Court explained that a trial judge may comment on evidence to help jurors, but must not act like a witness, distort the record, or add facts not in evidence. Here the judge went further than permissible: he told jurors that the defendant’s habit of wiping his hands while testifying was 'almost always an indication of lying,' and declared that nearly all of the defendant’s testimony was a lie. The Court held that this was an added factual assertion, highly persuasive coming from the bench, and likely to prejudice the jury despite the judge’s later caveat that his view was not binding.

Real world impact

The Court reversed the conviction because the judge’s one-sided, concrete assertions about the defendant’s truthfulness deprived the defendant of a fair chance to have his testimony judged impartially. Going forward, judges must take care when commenting so their personal impressions do not replace the jury’s role in deciding facts, and defendants whose judges make similar factual attacks can seek reversal.