The biggest U.S. biodiesel lobbying group has dropped its nine-year push to covert a $1-per-gallon tax credit available to blenders of the biofuel into one for producers, the vice president of federal affairs said on Friday. The tax credit benefits companies that blend biodiesel into gasoline sold at U.S. gas stations. It first went into effect as part the American Jobs Creation Act from 2005 to 2009 and has often been renewed retroactively in the years since. The National Biodiesel Board previously sought to change the credit to benefit biodiesel producers it represents, saying the credit was intended to support the domestic industry. By contrast, some blenders who benefited from the credit were also importing millions of gallons of foreign biodiesel. But import duties imposed by the U.S. Commerce Department have nearly stopped biodiesel imports from Indonesia and Argentina that were being sold below fair-market value, […]