Brownfield’s Ken Anderson interviews Growth Energy’s Emily Skor prior to President Trump’s appearance in Council Bluffs, Iowa. (Photo courtesy ZimmComm) Ethanol industry officials are calling on President Trump to address the issue of RFS small refinery waivers. Todd Becker, CEO of Omaha-based Green Plains Renewable Energy, says there’s no question those waivers have hurt ethanol demand. “We got hurt pretty bad on that situation,” Becker says. “We are pressing the White House to make changes to that.