Yes, they have. And every time each attack goes unanswered it becomes ingrained in the average, uninformed American's mind as the truth and that is the problem. The failure to launch an effective PR counter-attack has been almost criminal. Our troops and our mission require more of an effort in this regard, however uncomfortable it might be or how "unseemly" they find it. This "rising above it all" stuff is not working. We not only have to wage a smarter fight against the enemy abroad, but against the enemy within as well.
Anyway, I just think VP Cheney is one, among many, of the spokesmen who could be used more effectively.