Gas stations across Iowa, like this Casey's General Store in Des Moines, boast ethanol as "cleaner air for Iowa." Clay Masters/Iowa Public Radio hide caption

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It's All Politics

Got Corn? Ethanol Is No Longer King In Iowa Among Candidates

Iowa Public Radio

Candidates' waning interest in the corn fuel shows that Iowa's role in shaping policy debates may be declining.

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Wisconsin Gov. Scott Walker speaks at a news conference Monday in Madison, Wis., where he announced that he is suspending his Republican presidential campaign. Morry Gash/AP hide caption

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Ex-Iowa State Sen. Kent Sorenson defected from Michele Bachmann's campaign before the 2012 Iowa caucuses. In a 2014 plea deal, he admitted that he lied about payments from the Ron Paul campaign. Charles Dharapak/AP hide caption

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Republican presidential candidate and Wisconsin Gov. Scott Walker speaks at the Iowa State Fair, where he encountered protesters over his record in Wisconsin. Charlie Neibergall/AP hide caption

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Democratic presidential candidate Hillary Clinton speaks at the Iowa Democratic Wing Ding at the Surf Ballroom on Friday. Appearing at the Iowa State Fair on Saturday, she said the controversy over her emails was the "usual" politics. Charlie Riedel/AP hide caption

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Brenda Hummel and her 7-year-old daughter Andrea in their home near Des Moines, Iowa. Andrea was born with severe epilepsy and gets her health care through Medicaid. Clay Masters/Iowa Public Radio hide caption

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As candidates, staff and media flood Iowa, there will inevitably be photo ops with grain silos and bales of hay. Justin Sullivan/Getty Images hide caption

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Men in hazardous materials suits load dead poultry to be buried at Rose Acre Farms Inc., just west of Winterset, Iowa, on May 11. John Gaps III/AP hide caption

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