Biden apologizes for attack ad on McCain.
Barack Obama's running mate says a campaign ad that mocked Republican presidential candidate John McCain as an out-of-touch, out-of-date computer illiterate was "terrible" and would not have been done had he known about it. ...
"I thought that was terrible, by the way," Biden said.
Asked why it was done, he said: "I didn't know we did it and if I had anything to do with it, we'd have never done it."
Biden takes back his apology.