Whether the Fifth and Sixth Amendments permit a judge to decide materiality when materiality is an element of a prosecution under 18 U.S.C. § 1001.
Holding
No. Because materiality was an element of Gaudin's § 1001 offense, the Constitution required the jury to determine it beyond a reasonable doubt.
Reasoning
The Court began with an agreed premise: materiality was an element of the charged § 1001 offense. The Fifth Amendment's Due Process Clause and the Sixth Amendment jury-trial guarantee require a criminal conviction to rest on a jury determination, beyond a reasonable doubt, of every element of the crime. The district court therefore could not direct a finding on materiality while allowing the jury to decide the remaining elements.
Materiality asks whether a false statement had a natural tendency to influence, or was capable of influencing, the relevant governmental decision. That inquiry includes historical facts—what was said and what decision the agency faced—but it ultimately applies a legal standard to those facts. The Court rejected the Government's effort to characterize that ultimate application as a judge-only legal question.
Mixed questions of law and fact have traditionally been resolved by juries when they are part of the ultimate criminal-guilt determination. At the founding, criminal juries returned general verdicts of guilty or not guilty rather than merely supplying factual findings for a judge to convert into a verdict. A jury must follow the judge's instructions on the law, but it applies that law to the facts in deciding guilt.