It's a classic case of the Big Lie. I think that Bush wants to restore civility to the political scene, and he indeed the case, he's making a mistake. He's fighting a defensive war with the Left, and you can't win a war by fighting defensively. He should go all out and show that the Left are the real liars.
Yeah, that kind of perpetual campaign mode worked so well for Clinton. Amazing how some "Conservatives" want Bush to be a Clinton clone. Sorry Bush is President of the USA, NOT your favorite talkshow host. Expecting him to act like a talking head is silly.