“We believe the double layer issue of a tariff imbalance and an impenetrable RenovaBio is unjustified and puts American ethanol and farmers at risk,” wrote the coalition. “We strongly urge you to prioritize American ethanol export competitiveness in the Brazilian market by addressing these unfair policies. Further, if Brazil continues with its unfair treatment of American ethanol, we stand ready to work with you to consider measure that protect U.S. farmers and biofuels producers and counter these unfair trade practices.”