"Joe Lieberman ought to be ashamed of himself for some of the things he said tonight, not as a Democrat but as an American," adviser Robert Gibbs said on "Larry King Live." ...

"In the Senate, [Obama] has not reached across party lines to get anything significant done, nor has he been willing to take on powerful interest groups in the Democratic Party," Lieberman said in his speech.

Gibbs stressed that it was a "flat-out lie" that Obama hasn't reached across party lines during his time in public office. Gibbs cited Obama's work with Sen. Richard Lugar, R-Indiana, to keep nuclear weapons out of the hands of terrorists and with Sen. Tom Coburn, R-Oklahoma, on the government budget.

Gibbs blamed what he called lies like those perpetrated in Lieberman's speech for disillusioning voters and making them cynical of the government.

"I think [Lieberman] owes it to the American people to look into the camera and tell them the truth," Gibbs said...

Obama campaign spokesman Tommy Vietor said in a statement that the convention speeches also showed how out of touch the McCain campaign and Republicans are with the American people, neglecting to talk about one of the country's biggest problems: the economy.