There would be no ethanol without foreign oil? Tell that to Henry Ford when you see him in the afterlife. His first autos were designed to run on ethanol. And we were not importing oil at that time. No, the tractors don't run on ethanol, but many of them use biodiesel, another home grown deal. Some of those have been certified to use 100% bio in them. There is hardly a diesel truck that isn't being fed some blend of bio nowadays. And if you look at the levels of oil used for ag production today compared to 10 years ago, there is a significant drop. Low till and no till farming practices have reduced the footprint on ag crop production by significant amounts. Even commercial semi trucks are averaging 50% better fuel economy than 15 years ago. Wish the same could be said for the pickup truck market. I never implied that ethanol was a cure for everything, or that we have no need for oil. I stated the facts for what they are. The day the Iowa and Illinois get into a war over ethanol production, delivery, etc, then that will change.
By foreign oil, I assume you are mentioning Canada, Mexico, or Venezuela. Those are our primary "foreign oil" sources. But all of our military expenditures, propping up middle east potentates, and wars have been primarily with oil exporters that we barely use any oil from. And those costs should be rolled directly into the fuel cost at the pump so the public can feel the actual cost of these various adventures. My contention remains..... ethanol has one major thing going for it. We have not had to play in the same sandbox with it as we have had with oil. We have not gone to war over ethanol, we have not lost one soldier over ethanol, For all of it's detractors, ethanol has had a relatively benign impact both financially and human death toll compared to oil.
And even if we didn't make a drop of ethanol, that would not change the dynamics of what oil is costing us in money and lives. If you want to dispute those facts, they your argument is not so much with ethanol as it is with a government that does not allow us to be totally energy independent.
Use it. Don't use it, I don't care.