For you to make that statement, it presupposes that you have some idea of the total daily production of feces in America. Would you like to share that information with the rest of us? Along with a link, reference, source, etc.?
Unless I miss my guess, even if we were to convert 100% of America's total daily production of feces to energy products, it would only amount to "mouse nuts" when compared to the vast oceans of oil we import every day. So how is that going to free us from dependence on foreign oil?
Some numbers, sources and links, please.
--Boot Hill