Biden Calls Obama Ad "Terrible," Walks It Back (VIDEO)

Joe Biden told CBS' Katie Couric last night that an ad painting John McCain as unable to use a computer was "terrible."

"I thought that was terrible, by the way," Biden told Couric. "I didn't know we did it. If I'd had anything to do with it, we'd have never done it. And I don't think Barack, you know, I mean, I just think -- I don't think there was anything intentional about that." Watch:

Later, Biden walked back his comments:

"I was asked about an ad I'd never seen, reacting merely to press reports. As I said right then, I knew there was nothing intentionally personal in the criticism of Senator McCain's views which look backwards not forwards and are out of touch with the new economic challenges we face today.

"Having now reviewed the ad, it is even more clear to me that given the disgraceful tenor of Senator McCain's ads and their persistent falsehoods, his campaign is in no position to criticize, especially when they continue to distort Barack's votes on an issue as personal as keeping kids safe from sexual predators."

But McCain's campaign has already seized on the remark. Spokesman Brian Rogers responded:

"While the New York Times and other media outlets were silent in the face of Barack Obama's shameless and dishonorable attack on John McCain, even Obama's own running mate has now condemned the ad as 'terrible,' admitting he never would have approved it. Barack Obama has brought the sleazy gutter politics of Chicago to our national stage, exposing his call for a 'new politics' as a lie and embarrassing even his own running-mate with the low road campaign he's running."