Some great rope line video from Joe Biden's recent Ohio swing, where he was asked by an anti-pollution campaigner about clean coal -- a controversial approach in Democratic circles for which Obama has voiced support, particularly during the Kentucky primary.
Biden's apparent answer: He supports clean coal for China, but not for the United States.
"No coal plants here in America," he said. "Build them, if they're going to build them, over there. Make them clean."
"We’re not supporting clean coal," he said of himself and Obama. They do, on paper, support clean coal.
The answer seems to play into John McCain's case that Obama has been saying "no" to new sources of energy.
In the primary, Biden opposed Obama's push for clean coal, which is seen as a way of maintaining or expanding America's coal-burning power plants -- many of which are in rust belt swing states.
"I don't think there's much of a role for clean coal in energy independence, but I do think there's a significant role for clean coal in the bigger picture of climate change," he told Grist last year. "Clean-coal technology is not the route to go in the United States, because we have other, cleaner alternatives," he said, but added that America should push for a "fundamental change in technology" to clean up China's plants.
Biden also was not shy on his own clean energy credentials.
"The first guy to introduce a global warming bill was me 22 years ago. The first guy to support solar energy was me 20 years ago," he said, apparently referring to the 1986 Global Climate Protection.
Think Progress has some more context, and Jake Tapper reports that Obama this morning rebuked Biden on a separate issue, his quick opposition to a federal bailout.