I have reservations about this one. Ethanol is IMHO a farce IMHO, a disguised farm supplement bill, however I'm not sure everything bad needs to be controlled by more laws. Laws mandating ethanol are how we got into the situation we're in, and I oppose that too. I believe the amount of ethanol in the product should be mandated to be clearly labeled on the pumps, and limits to the amount a car can ingest without problems should be clearly labeled at the fill spout and the free market should decide.
Ethanol is, in fact, a renewable fuel (it can even be distilled at home), and while it contains less energy than gasoline and studies have shown it may actually use more dead dinosaurs in its production than it saves, if a consumer chooses to get a "flex fuel" vehicle and use 85% I believe that should be their choice. The laws should IMHO address full and clear disclosure, not interfere with freedom to choose.
Paradoxically, Henry Ford originally wanted the Model T to run on ethanol. In 1920 GM's legendary research boss Charles Kettering drive a Chevy running 70/30 ethanol/gasoline. He promoted ethanol as a wondrous new automotive fuel.
In short, I don't like being forced to use ethanol at even 10%. I also don't like being banned from using ethanol at 85% if I choose to buy a flex fuel car. What I want the laws to support is freedom of choice AND full disclosure on both the pump and the car (for the next owner's benefit) to make that choice.