Author Eric Burns talks about Jerome Corsi's book, "The Obama Nation," and whether its unfair attacks on Barack Obama will do the kind of damage Corsi's previous attack-book did to John Kerry's campaign. Burns and Countdown guest host Rachel Maddow explore the dishonest tactics employed to make the book appear more popular than it is.

This video is from MSNBC's Countdown, broadcast August 14, 2008.

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