The Obama-Boehner duel
The President as commander in chief correctly explained his position to the American people while it is inappropriate and disrespectful for the speaker to argue when he does not have his own party behind him.
Main article: Burr-Hamilton duel
§ August 12, 1817: Thomas Hart Benton (senator) and Charles Lucas (Missouri) on Bloody Island (Mississippi); Attorneys on opposite sides of a court battle - Lucas challenged Benton's right to vote and Benton accused Lucas of being a "puppy"; Lucas was shot in the throat and Benton shot in the leg; Benton released Lucas from his obligation.
§ September 27, 1817: Benton and Lucas rematch on Bloody Island; Benton challenged Lucas after Lucas said the first fight at 30 feet (9.1 m) was unfair because Benton was a better shot. Benton killed Lucas at nine feet and was unhurt.
§ June 30, 1823 Joshua Barton and Thomas C. Rector on Bloody Island (Mississippi River); Rector was critical of Barton's brother, Senator David Barton's blocking the appointment of Rector's brother William Rector to General Surveyor position. Barton was killed and Rector unhurt.
§ August 26, 1831: Thomas Biddle and Spencer Darwin Pettis on Bloody Island (Mississippi River); Biddle challenged Pettis for comments about Biddle's brother who was president of the United States bank. Both died after firing from five feet.
§ August 10, 1832: Savannah physician Philip Minis shot and killed Georgia state legislator James Stark.
Main article: Stark-Minis duel
§ February 24, 1838: Kentucky Representative William Jordan Graves killed Maine Representative Jonathan Cilley in a pistol duel. Congress then passed a law making it illegal to issue or accept duel challenge in Washington, D.C.
§ September 22, 1842: Future President Abraham Lincoln, at the time an Illinois state legislator, accepted a challenge to a duel by state auditor James Shields. Lincoln apparently had published an inflammatory letter in a Springfield, Illinois, newspaper, the Sangamon Journal, that poked fun at the Illinois State Auditor—Shields. Taking offense, Shields demanded "satisfaction" and the incident escalated with the two parties meeting on a Missouri island called Sunflower Island, near Alton, Illinois, to participate in a duel. Just prior to engaging in combat, the two participants' seconds intervened and were able to convince the two men to cease hostilities, on the grounds that Lincoln had not written the letters.
§ August 26, 1856: Benjamin Gratz Brown and Thomas C. Reynolds on Bloody Island (Mississippi River); In what would be called the "Duel of the Governors" Brown was then the abolitionist editor of the St. Louis Democrat and Reynolds a pro-slavery St. Louis district attorney fought with Brown being shot in the leg and limping for the rest of his life while Reynolds was unhurt. Brown would become a Missouri Governor and Reynolds would become a Confederate Governor of Missouri.
§ June 7, 1882: Louisiana State Treasurer Edward A. Burke was seriously wounded by C. Harrison Parker, the editor of the New Orleans Daily Picayune, in a duel with pistols. After Parker published unflattering remarks about Burke, Burke challenged him to a duel.”