Wartime Secrets, Assassination Plots, and More Conspiracy Theories about U.S. History

Was there a secret plot to kill President John F. Kennedy? Did the U.S. government know that the Pearl Harbor attack was going to happen? Conspiracy theories have cropped up since the U.S. formed. Uncover the details about some of the most popular conspiracy theories about U.S. history. Find out why people believe in them and what experts say. Can the conspiracy theories be easily debunked, or is the truth still waiting to be found?