Summary: On MSNBC's Morning Joe, David Shuster asked Clinton campaign chief strategist Mark Penn if it was a "mistake" when he "brought up a word and reminded people of [Sen.] Barack Obama's past drug use" on Hardball in December 2007. But, Penn was not the one to bring up Obama's past drug use; it was Chris Matthews. Matthews, as well as Norah O'Donnell, have falsely asserted that Penn brought up the issue.
