A policy that entails draining America’s limited oil supplies – I call it “drain America first” – will leave the US even more dependent on foreign oil. The US imposes a tariff of more than 50 cents per gallon on sugar-based ethanol from Brazil, but subsidizes inefficient corn-based American ethanol heavily – indeed , it requires more than a gallon of gasoline to fertilize, harvest, transport, process, and distill corn to yield one gallon of ethanol.