The other professors hated him because he was lazy, unqualified, never attended any of the faculty meetings, and it was clear that the position was nothing more than a political stepping stool. According to my professor friend, he had the lowest intellectual capacity in the building. He also doubted whether he was legitimately an editor on the Harvard Law Review, because if he was, he would be the first and only editor of an Ivy League law review to never be published while in school (publication is or was a requirement).
Obama is a fraud. But then, some people knew that before the election. We were just called "racists".