I believe it depends on who you talk to, but I'd say Charles Lindbergh.

"Lucky Lindy" was adored for his solo transatlantic flight from New York to Paris in 1927. And the nation mourned the kidnapping and m****r of his infant son, Charles Lindbergh Jr., in 1932. (Kidnapping was designated a federal crime because of this case.)

However, Lindbergh was a N**i sympathizer and headed the America First Committee, which was dedicated to keeping the United States out of WWII. He socialized with Nazis during one of his many trips to Germany and received a medal from Hermann Göring, who headed the Luftwaffe, the German Air Force.

Lindbergh also had a secret family in Germany while he was married to Anne Morrow Lindbergh. He had children with two women in Bavaria: Brigitte and Marietta Hesshaimer, and with his European secretary, Valeska. He kept these relationships secret from his wife and his children in America. .