The most famous treason trial, that of Aaron Burr in 1807, resulted in acquittal. In 1807, on a charge of treason, Burr was brought to trial before the United States Circuit Court at Richmond, Virginia. The only physical evidence presented to the grand jury was General James Wilkinson's so-called letter from Burr, which proposed the idea of stealing land in the Louisiana Purchase. The trial was presided over by Chief Justice of the United States John Marshall, acting as a circuit judge. Since no witnesses testified, Burr was acquitted in spite of the full force of Jefferson's political influence thrown against him. Immediately afterward, Burr was tried on a misdemeanor charge and was again acquitted.