Micheal Clements, NAFB News Service

An Iowa candidate for the U.S. Senate is calling on Environmental Protection Agency Administrator Andrew Wheeler to resign. Theresa Greenfield, a Democratic challenger to Republican Senator Joni Ernst, says, “Wheeler must step down immediately.” Greenfield says Iowa farmers “deserve answers for why Senator Ernst voted for a fossil fuel lobbyist to run the EPA in the first place.” Last year, Ernst did suggest she would call for Wheeler’s resignation if his biofuels promises are not fulfilled. Last week, Ernst co-sponsored a bill that would “approve certain advanced biofuel registrations that have languished before the EPA.” Recent polling by the Des Moines Register found 46 percent of likely Iowa voters say they would back Greenfield if the election were held today, and 43 percent say they would support Ernst. Iowa is the top state for biofuels production, with 43 ethanol plants capable of producing over 4.5 billion gallons annually, according to the Iowa Renewable Fuels Association.