Ethanol as fuel suddenly isn't the completely brilliant idea it was a while back, not with what it has done to the feed business. NY Times article mentions:
O.K. Industries, a poultry company in Arkansas upset about rising feed costs, said this was the first year since the company was founded during the Great Depression that it could not afford to give its employees a wage increase.
So which lobby will talk loudest to Congress -- the grain farmers, the livestock growers, the developing fuel industry? No point in including consumers in this list. Their interests are incidental.