Rush Limbaugh likes to facetiously refer to Hillary Clinton as "the smartest woman in the world." Today's Morning Joe brought us three people who might actually believe she is. Previewing tonight's Dem debate, Mike Barnicle led off the love-in, fantasizing about people coming away from the debate saying "wow, there is a prepared, thorough, knowledgeable candidate. All the Benghazi stuff goes out the window." Next was Joe Scarborough, who said the debate gives Hillary the chance to show voters "she may be the smartest person on the stage and in politics right now." And finally, the incomparable Cokie Roberts, who...