The Wall Street Journal wants voters in Pennsylvania and Ohio to pay close attention to what Sen. Barack Obama and his running mate, Sen. Joe Biden, have to say about America's energy future.

Both states stand to benefit if America turns more to clean coal technology to break the grip of foreign oil. But Biden slipped again during a recent speech. If you listen closely to what Obama and Biden have to say about energy, they're more concerned with global warming and imposing a carbon tax on Americans than they are with finding clean, reliable and affordable energy alternatives.

From the WSJ editorial:

Mr. Biden, then, only stated an obvious if politically unutterable truth. The real costs of green ambitions won't be paid by well-heeled coastal liberals, but will fall disproportionately on the Southern and Midwestern states that depend on coal for jobs and power. The blue-collar voters of Pennsylvania, Indiana, Ohio, West Virginia and so forth will get hurt most -- notwithstanding Mr. Biden's campaign reinvention as the scrapper from Scranton.

Read the full editorial, "Biden's Coal Slaw," at the newspaper's Web site.