Obama adviser Robert Gibbs responded sharply by stating that "Joe Lieberman ought to be ashamed of himself for some of the things he said tonight, not as a Democrat but as an American."
This is an odd condemnation from a party source that should prize free speech. Why shouldn't a Senator be able to state his position? It is not anti-American to evaluate a politician. Lieberman rankles nerves, and does not always toe the party line, his independence makes him an effective spokesperson for many Americans.