Nine potential Republican presidential candidates were asked their opinions on various agricultural issues at the Iowa Ag Summit in Des Moines on Saturday.

Each taking a seat on a stage with agribusiness entrepreneur Bruce Rastetter for 20-30 minutes were former Florida Gov. Jeb Bush, Texas Sen. Ted Cruz, New Jersey Gov. Chris Christie, former Arkansas Gov. Mike Huckabee, South Carolina Sen. Lindsey Graham, former New York Gov. George Pataki, former Texas Gov. Rick Perry, former Pennsylvania Sen. Rick Santorum, and Wisconsin Governor Scott Walker. Topics included immigration reform, trade promotion authority and GMO labeling, but the main focus of the event was to get the potential candidates to take a stand on the Renewable Fuel Standard (RFS).

Six of the nine expressed at least conditional support, including Wisconsin Governor Scott Walker who recently had been criticized by biofuel producers in his state for not taking a stand on the law. Three of the candidates – Cruz, Pataki, and Perry – came out firmly against the RFS, while at the same time saying they supported ethanol and other renewable fuels.

The summit was organized with the support of America’s Renewable Future, a quasi-political campaign for the RFS introduced earlier this year. Co-chair Bill Couser, pictured here with Sen. Cruz, says their goal is to educate potential presidential candidates.

“Show them why we do this, how we do this, and say what do you think?” said Couser, an Iowa cattle producer and ethanol advocate. “I can say, let’s go look at a corn field, let’s go look at a feedlot, let’s go look at some windmills, let’s go look at Lincolnway Energy, and then let’s go to the DuPont plant right next door and I’ll show you what we’re doing with the whole plant and being sustainable.”

Couser says they plan to approach all potential presidential candidates individually and invite them to visit and learn more about agriculture and renewable energy, including Hillary Clinton. “Wouldn’t that be something if she showed up?” he said.

Listen to my interview with Bill at the recent National Ethanol Conference here: Interview with Bill Couser, America's Renewable Future Co-Chair