Chrs,
Yes it is mandatory. And it happened under a Republican legislature and govenor.
Many of the "Bread Basket" states have similar requirments. I'm pretty sure Iowa does along with Illinois. Not positive. There are all kinds of tax incentives for participating in ETOH production from the farm to retail outlets nationwide. It may not be required but not going along can hurt. The whole industry is being coerced into this and you can bet, the bean counters will care little about you and me and our right to chose.

Tells you how much power the farm lobby has.

Roadster with a stick.