The information below is taken from the FBI website detailing famous cases and criminals:
Shortly after midnight on the morning of June 13, 1942, four men landed on a beach near Amagansett, Long Island, New York from a German submarine, clad in German uniforms and bringing ashore enough explosives, primers, and incendiaries to support an expected two-year career in the sabotage of American defense-related production. On June 17, 1942, a similar group landed on Ponte Vedra Beach, near Jacksonville, Florida, equipped for a similar career in industrial disruption.
The purpose of the invasions was to strike a major blow for Germany by bringing the violence of war to our home ground through destruction of America’s ability to manufacture vital equipment and supplies and transport them to the battlegrounds of Europe; to strike fear into the American civilian population; and to diminish the resolve of the United States to overcome our enemies.
By June 27, 1942, all eight saboteurs had been arrested without having accomplished one act of destruction. Tried before a military commission, they were found guilty. One was sentenced to life imprisonment, another to 30vyears, and six received the death penalty, which was carried out within a few days.
Two of these men were American citizens–Ernest Peter Burger had become a naturalized American in 1933 and Herbert Hans Haupt had entered the United States as a child, gaining citizenship when his father was naturalized in 1930.
The FBI website reports:
All eight were found guilty and sentenced to death. Attorney General Biddle and J. Edgar Hoover appealed to President Roosevelt to commute the sentences of Dasch and Burger. Dasch then received a 30-year sentence, and Burger received a life sentence, both to be served in a federal penitentiary. The remaining six were executed at the District of Columbia Jail on August 8, 1942.
Why is the person who bombed the Boston Marathon being treated differently than these men?