Ninety-four years ago today, one of America's most notorious criminals faced what many thought was impossible – federal indictment for his crimes. On June 12, 1931, Al Capone, the man who had seemingly made himself untouchable through violence, corruption, and careful legal maneuvering, was formally charged by a federal grand jury in Chicago. But in a twist that would become legendary in American legal history, the government didn't get him for murder, bootlegging, or racketeering – they got him for tax evasion.