A completely unverified comment left here would seem to explain a lot of things if true:

Yeah, right, Schieffer is anti-Bush. Perhaps you didn't know that Schieffer's brother is a former business partner of George W. Bush, and was appointed by Bush to be an ambassador. Perhaps you also are unaware of this quote by Schieffer:

"But where I am kind of prejudiced is I always pull for people, in a funny kind of way, from my part of the country. I am not one of those who believes that every bit of wisdom somehow originates in the northeastern part of the United States. So when somebody comes out of the South, I'm always kind of secretly pulling for them."