In a recent letter to President Obama, the Republican Senator from Iowa, Charles Grassley, threatened to hold U.S.-Brazil relations hostage to his insatiable thirst for corn fed ethanol. Senator Grassley’s Iowa is the largest producer of ethanol in the U.S. For years Senator Grassley has played a key role in protecting U.S. ethanol producers from Brazilian ethanol imports, as both Chair and now as the minority’s ranking member of the Senate Finance committee that oversees all U.S. international trade policy.