It's no longer about cheaper gas, or cleaner air. It's about a de facto subsidy to grow corn to sell to the distillers.
No more ethanol mandate in the gasoline motor fuel blend, no more need to create ethanol, no more demand for the corn that makes ethanol, more p.o.ed farmers with tons of grain on their hands with no market.
I've seen it before when a candidate suggests removing the ethanol requirement, and the Iowans revolt.
Iowa is ONE state of 50. It's wrong to screw the other 49 to make the Iowa corn farmers happy. There are food shortages on the horizon. There will be plenty of market for corn.