Thomas Jefferson, Aaron Burr and the American Way of Treason

The U.S. had good reason to be cautious about drawing a line between disloyalty and conduct deserving of prosecution

Aaron Burr exhorting his followers at Blennerhassett Island Ohio River 1805 (Alamy)
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Treason is the only crime defined in the U.S. Constitution, which states: “Treason against the United States shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort.” 

The Founders borrowed this language from the law of Edward III of England. Enacted in 1350 A.D., Edward III’s statute also criminalized “compassing or imagining” the death of the king, sexually violating certain women in the royal household, counterfeiting the great seal or coinage of the realm and murdering certain royal officials—offenses that would not make sense to consider treasonous in a republic.

The U.S. Constitution also requires “the Testimony of two Witnesses to the same overt Act” or “Confession in open Court” in order to obtain a conviction. The requirement of an “overt Act” was intended to preclude judges or politicians from using treason trials to go after political opponents, as had been common in early modern England. Indeed, for centuries British monarchs had coerced judges into condemning political opponents to death based on spurious evidence or flimsy allegations, often rooted in the claim that the “traitor” had compassed or imagined the death of the king.

In America, the Founders wished to hold government authorities to a higher evidentiary standard.

But defining treason in the Constitution was one thing. It took actual experience to give life and practical legal meaning to the American idea of treason.

Within a decade of the Constitution’s ratification, several groups of protesters in Pennsylvania were convicted of treason for violently resisting the enforcement of federal tax laws. Presidents Washington and Adams pardoned these “traitors” before any of them stepped foot upon the gallows. Their convictions rested on an old English concept that “levying war” included violent resistance to a law. But the courts would soon begin to move away from this broad definition of treason. The first case to do so was the 1807 trial of Aaron Burr.

Burr had been Thomas Jefferson’s vice president from 1801 to 1805. A political chameleon, Burr would change party or office whenever he believed it to be most politically or financially advantageous. In 1800, Jefferson selected Burr as his running mate, hoping that Burr’s presence on the ticket would help carry northern states, like New York. In those days—prior to the ratification of the 12th Amendment in 1804—members of the Electoral College did not specify whether they were voting for president or vice president when they cast their ballots. So Jefferson and Burr tied in the Electoral College. Seeing this as an opportunity to slip his way into the presidency, Burr allowed the election to be thrown into the House of Representatives, where it took 37 ballots to decide that Jefferson was actually president-elect. This episode scarred Jefferson, teaching him that he could not trust his vice president.

In July 1804, Burr famously shot and killed Alexander Hamilton in a duel. Later that year Jefferson ran for reelection with a different running mate, and by March 1805, Burr was out of office. Now a political exile and accused murderer, Burr turned his gaze toward the western frontier.

Although the details of his plans remain murky, Burr made visits to the frontier—perhaps to provoke war with Spain and liberate Mexico; perhaps to separate the trans-Allegheny region from the United States and to set up his own empire; or perhaps simply to see how he might strike it rich. Unfortunately for Burr, one of his accomplices in New Orleans began to have second thoughts and sent copies of some of Burr’s correspondence to Washington, D.C., revealing Burr’s plans to federal authorities.

When word of Burr’s alleged plots reached Jefferson on November 25, 1806, the president decided to stop him. Without mentioning Burr by name, Jefferson issued a proclamation two days later stating that a traitorous conspiracy had been uncovered. He called on “all persons whatsoever engaged or concerned in the same to cease all further proceedings therein as they will answer the contrary at their peril.”

The House of Representatives requested Jefferson to present evidence in support of his claims. Although he saw this request as an affront to his administration, Jefferson nevertheless complied on January 22, 1807, this time identifying Burr by name and stating that he was an “archconspirator” and traitor whose “guilt is placed beyond all question.”

Jefferson’s public declaration of Burr’s guilt—before Burr had even been arrested or indicted—was controversial. Writing from his home in Quincy, Massachusetts, ex-president John Adams declared that even if Burr’s “guilt is as clear as the Noon day Sun, the first Magistrate ought not to have pronounced it so before a Jury had tryed him.”

Several of Burr’s associates were arrested and transported to Washington, D.C., for trial. In Washington, President Jefferson and Secretary of State James Madison personally interrogated one of them, disingenuously telling him that anything he said would not be used against him in court (it later was). 

Fortunately for the prisoners, their case came before U.S. Supreme Court Chief Justice John Marshall.

Marshall loathed Jefferson. Although the two men were both Virginians—and cousins—they had polar opposite views of what was best for the American republic. Throughout his tenure on the bench Marshall used his position as chief justice to articulate a nationalist view of the U.S. Constitution. Jefferson, an agrarian, generally opposed a strong central government. To make matters worse, Marshall had been appointed by lame duck president John Adams and confirmed by a lame duck Federalist Senate in early 1801, just weeks before Jefferson took office. Marshall, in effect, occupied a stolen seat on the Supreme Court that Jefferson believed he should have had the chance to fill.

In February 1807, Marshall ruled that Burr’s associates could not be tried in the nation’s capital since they had not committed any crime there. Much to Jefferson’s chagrin, they were released.

But that ruling wouldn’t spare Burr.

Burr was traveling down the Mississippi River on nine longboats with about 60 men when he learned that he might be assassinated in New Orleans. He tried to escape, making his way deep into the Mississippi Territory. But the U.S. military soon caught up with him and arrested him on February 19, 1807.

Burr was sent to Richmond for trial because his alleged “overt act” of treason had taken place on Blennerhassett Island, a small sliver of what was then Virginia, in the Ohio River, where, in December 1806, there had been an uneventful but armed standoff between some of Burr’s men and the Virginia state militia. (Of great significance to the eventual outcome of the case, Burr was not present at this standoff.)

Jefferson took an unhealthy interest in the prosecution of Burr’s case. The president sought to have a jury made up entirely of Jeffersonian Republicans. He also wanted the Treasury Department to pay the expenses of government witnesses. In an extraordinary delegation of executive authority, he sent his prosecutor “blank pardons…to be filled up at your discretion” should any of the other “offenders” be willing to testify against Burr. Finally, the president also supported a declaration of martial law in New Orleans, enabling military authorities to arrest civilians without warrants—including journalists—and to rifle through private mail at the post office in search of evidence.

Jefferson’s view of the evidence against Burr was highly problematic. “As to the overt acts,” he wrote, “were not the bundle of letters of information in [Attorney General Caesar] Rodney’s hands, the letters and facts published in local newspapers, Burr’s flight, and the universal belief or rumor of his guilt, probable ground for presuming…overt acts to have taken place?” (Emphasis added.)

There was great irony in Jefferson’s attitude, for when newspapers were unkind to his administration, he blasted them for their unreliability. “Nothing can now be believed which is in a newspaper,” he wrote in April 1807. “I will add, that the man who never looks into a newspaper is better informed than he who reads them; inasmuch as he who knows nothing is nearer to truth than he whose mind is filled with falsehoods and errors.”

Despite the weakness of the evidence, the trial began on August 3, 1807. The prosecution lined up more than 140 witnesses, but after several testified to Burr’s “evil intention,” Burr’s lawyers objected that the witnesses were not offering any evidence regarding any actual overt act of treason. Chief Justice Marshall, who presided over the trial as a circuit judge, ruled in favor of the defense, arguing that only witnesses who could testify about an “overt act” of “levying war” could take the stand. Since Burr had not been present at the standoff on Blennerhassett Island in December 1806, no further testimony would be admitted. The jury found him “not guilty by the evidence presented.”

President Jefferson was disgusted with the outcome of the trial and expressed his contempt for the courts as a result. In fact, Jefferson even advocated for an amendment to the U.S. Constitution that would enable the president to remove federal judges from office should both houses of Congress request it, claiming that the judicial branch was acting “independent of the nation” and that the courts were extending “immunity to that class of offenders which endeavors to overturn the Constitution, and are themselves protected in it by the Constitution.” 

From Jefferson’s perspective, if judges were going to allow traitors to undermine the nation, they should not receive the constitutional protection of life tenure. But the brazen assault on the federal judiciary by Jefferson and his followers in Congress did not become law.

Jefferson’s behavior in United States v. Aaron Burr reveals a president willing to allow his politics and personal vendettas to cloud his judgment. Hating both defendant and judge, Jefferson personally inserted himself into a criminal prosecution.

A controversial presidential election. A stolen Supreme Court seat. Allegations of treason. A president with open disdain for the courts and the press. The contest that defined treason in early America had elements familiar to Americans in 2017. The Founding Fathers faced similar conflict—and yet the nation survived.

Jonathan W. White is associate professor of American Studies at Christopher Newport University. His most recent book is Midnight in America: Darkness, Sleep, and Dreams during the Civil War (UNC Press, 2017).  Check out his website at www.jonathanwhite.org or follow him on Twitter at @CivilWarJon

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