Most "green" efforts are frauds and scams and rent-seeking, that actually do net environmental harm. Ethanol is no exception.
Obama's Paris agreement was a giant fraud as well - giving China a blank check to pollute at will out to 2030 while the West must take steps to reduce theirs, at great cost and waste and loss of industry (and meanwhile, the manufacturing that goes to China as a result of green policies is 4x less efficient per unit of output, greatly increasing global pollution). Meanwhile, emissions do this:
This is what happens when you keep policies that have the effect of needlessly duplicating manufacturing capital in a highly energy inefficient communist dictatorship. While lauding the Paris agreement which is worthless/net harmful to the environment. It's so incredibly dumb and destructive to both the environment and Western economies.