Americans are, sadly, all too accustomed to lying presidents. Donald Trump tells a fib almost every time he opens his mouth. Bill Clinton lied about Monica Lewinsky; Richard Nixon lied about Watergate; and the entire Dubya Bush administration made up weapons of mass destruction. Yet as notable as these untruths were, none were as impactful or as blindly accepted as one told during the presidential campaign of 1840, the so-called Log Cabin Campaign.