Those in conventional energy markets believe that if not for its adverse politics, there are plenty of philosophers in Washington who would raise the prices paid by Americans for fossil fuels. After all, these creations of Mother Nature are dirty and, importantly, their low cost undermines the successful introduction of so-called "green" manmade energy sources. But, a cheap energy policy remains in place in the U.S., as the chart below illustrates. This has not only encouraged Americans to continue buying sport utility vehicles, but it also affects the composition of agricultural exports.One interesting impact is how food is being used to arbitrage differing energy policies. As noted in the chart below, U.S. exports of dried egg, dried eg...