The latest Bloomberg Businessweek searches for the answer to that question, and the nation?s poor economic picture might offer a good clue:

Jim Sensenbrenner pays extra to cruise his pontoon boat across Pine Lake in southern Wisconsin. He’s willing to hand over 30? more per gallon for gasoline free of ethanol, which he calls “a lousy fuel” that corrodes his two-stroke outboard engine.

One boater’s opinion might not matter, except that Sensenbrenner happens to be the top Republican on the House Select Committee on Energy Independence and Global Warming. His ethanol aversion is a sign that the darling of alternative fuels is hitting a political wall. “People are worried about deficits, debt, and special-interest handouts,” Sensenbrenner says. “Ethanol is all three.”

Why are ethanol subsidies so counterproductive? You?ll find more answers here, here, and here.