Trump took the position that the existing ethanol law passed by Congress and signed by the President should be enforced. BFD! Why pick a fight on a complicated issue in the middle of a campaign? Especially when your main opponent already has?
So if he decides that the subsidies are not good government in the future, he can use his “take the lumps out” approach that he would have taken on the Iran $150B. “I am so sorry, Iowa, but we are too much in debt to be able to afford to continue these subsidies.”
What man answers the question, “Honey, does this dress make me look fat?”
based on your post, trump is a politician not a outsider willing to take on special interests.