http://www.cnn.com/SPECIALS/2001/pardons/pardon.history.html
Iva Toguri D'Aquino, an American citizen, was convicted of treason for broadcasting Japanese propaganda during World War II. President Ford pardoned her after it came to light she was being held in Japan as an "enemy alien" and was secretly working to subvert the broadcasts.
Freaky article............................
Presidents and the power to pardon
http://www.cnn.com/SPECIALS/2001/pardons/pardon.history.html
(CNN) -- The power of U.S. presidents to grant irrevocable reprieves and pardons has raised eyebrows throughout the country's history.