I lived half my life in Iowa, but thanks for the lecture.
Not targeted at you specifically ;)
Cruz was actually better than the other candidates regarding GMO and country of origin food labeling. Those have potentially larger ramifications than the renewable fuels. Canada and Mexico are ready to elevate trade wars in the meat and produce markets if labeling becomes mandated. This will put a lot of farmers out of business. Many candidates do not know this. Especially Jeb Bush. His non-answers were worse than if he just sat up there and picked his nose in silence.