John F. Kennedy was the president of the United States of America.
John F. Kennedy . Lee Harvey Oswald was arrested for the crime , but he was never prosecuted due to his murder by Jack Ruby two days later . Lee Harvey Oswald ( October 18 , 1939 -- November 24 , 1963 ) was an American former U.S. Marine who was arrested for the assassination of United States President John F. Kennedy on November 22 , 1963 .