Two major U.S. ethanol policy developments look bullish -- at least on paper -- for Brazilian ethanol exports. One is the 31 December 2011 expiration of the secondary tariff on Brazilian ethanol imports into the U.S.; the other is the growing mandate for U.S. motor fuel to blend non-corn starch "advanced biofuels," which will hit 1 billion gallons next year. Add to that the California low carbon fuel standard (for which Brazilian sugar ethanol would qualify), and, as stated above, at least on paper it would be a reasonable assumption that ethanol exports to the U.S. would be a booming business. But instead, Brazil ended 2011 as a top destination for U.S. ethanol -- a total of 395 million gallons in 2011. Furthermore, imports of Brazilian...