This years drought will tell the tail about using food for fuel. I wouldn't burn ethanol in my hot rod period. Many service stations continue to sell 91/93 octane with no ethanol added. JMO
It will literally take an act of Congress to reduce the amount of ethanol that is sold in gasoline. That's because an act of Congress in 1990 created the requirement that most gasoline contain ethanol. Ethanol sales in gasoline are required by law to increase every year until 2023, so until the law changes, expect more, not less, ethanol. If ethanol becomes in short supply because of a corn shortage, expect higher prices at the pump as we import more ethanol to make up for shortages in domestic production (note- the US is already a net importer of ethanol).
Congress has bigger fish to fry than the ethanol situation, so I wouldn't hold my breath waiting for them to do something.
