Minnesota did extensive E-15 and E-20 studies that completed back in 2008. They didn't find a many problems, which is why the EPA passed the waivers without much fanfare. It's been lawful to sell E15-E20 in MN for some time. Here's the thing though, there's no reason to make a big deal out of the blends. Ethanol can be blended at the pump. Give consumers the choice on how much they want and how much they want to pay.