The Canadian International Trade Tribunal ruled that imports of U.S. corn do not hurt Canada's corn industry. This ruling removes the duties that had been placed on U.S. corn last December by the Canada Border Services Agency. Canadian producers had claimed the U.S. was "dumping subsidized" corn in Canada. USDA and the U.S. Trade Representative in a statement said, "This decision results in no final anti-dumping or countervailing duties being imported. All provisional duties collected will be refunded. The ruling is confirmation that, when properly utilized, the international trading system works in favor of free trade." Canada represents a $200 million market for U.S. corn. -- P. Scott Shearer, Washington, D.C., correspondent