An eyepopping report on the full range of subsidies, federal and state, is in the report "Biofuels: At What Cost. Government Support for Ethanol and Biodiesel in the United States" at http://www.globalsubsidies.org/IMG/pdf/biofuels_subsidies_us.pdf
very detailed report, thanks for posting
http://www.globalsubsidies.org/IMG/pdf/biofuels_subsidies_us.pdf
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