According to an article in Bloomberg, "More than a decade after conservationists helped persuade Congress to require adding corn-based ethanol and other biofuels to gasoline, some groups regret the resulting agricultural runoff in waterways and conversion of prairies to cropland – improving the odds that lawmakers might seek changes to the program next year." The federal Renewable Fuel Standard (RFS), which led to mass production of corn-based ethanol, has proven to be sadly ineffectual; in fact, groups like the Environmental Defense Fund and the National Wildlife Federation have begun to realize that the use and manufacture of biofuels has had "severe, unintended consequences," partly as a result of the way regulatory regimes were implemented. Despite a political divide between legislators from the Corn Belt and others, a revamped RFS appears to be moving forward in the House of Representatives.