Did you know Warren G. Harding, America's 29th President, might have been a member of the Ku Klux Klan? According to Freakonomics (a fascinating book I just started reading), he took his Klan oath in the White House Green Room.

According to a Harding historian (imagine being a Harding historian?), this is all lies.

I'm sure this will generate passionate debate between loyal Harding apologists and the smug anti-Warren G. crowd.