On the campaign trail, President Obama and Republican challenger Mitt Romney traded barbs over energy policy on Tuesday during separate appearances. Speaking during a second consecutive day of campaigning in Iowa, President Obama said Romney has failed to support renewable power sources such as wind.

President Obama: “He said that new sources of energy like wind are imaginary. His running mate calls them a fad. During a speech a few months ago, Governor Romney even explained his energy policy this way — I’m quoting here — 'You can't drive a car with a windmill on it.’ That’s what he said about wind power: 'You can't drive a car with a windmill on it.’ Now, I don’t know if he’s actually tried that; I know he’s had other things on his car. But — but if he wants to learn something about wind, all he’s got to do is pay attention to what you’ve been doing here in Iowa.”

Romney meanwhile stumped in Ohio, where he said President Obama’s energy policy has fallen short in its support for coal mining.

Mitt Romney: “One promise he kept was with regard to energy. He said if he is elected president and his policies get put in place, the cost of energy would skyrocket. That’s one he’s kept. He also said you can go out and build a new coal plant if you want, but if you do, you’ll go bankrupt. That’s another promise he’s intent on keeping. His vice president said coal is more dangerous than terrorists. Can you imagine that? This — yeah, this tells you precisely what he actually feels and what he’s done.”