Justice Robert Jackson, for the majority, stated, "Every act, movement, deed, and word of the defendant charged to constitute treason must be supported by the testimony of two witnesses". This strict evidentiary standard was interpreted as requiring two witnesses to the same overt act, not merely to separate acts. The Court emphasized that this constitutional safeguard was deliberately designed to prevent treason convictions based on suspicion, conjecture, or political disagreement. By requiring such rigorous proof, the Court reinforced the Founders' concern about potential abuse of treason charges by the government.