Canada hauls US to WTO over beef, pork rules Geneva: Canada filed a World Trade Organization complaint over a new U.S. law that requires retailers to provide country-of-origin labeling for fresh beef and pork, officials said. The Canadian government said it was concerned the U.S. rules were discriminating against Canadian agricultural exporters, who have lobbied hard for a legal challenge at the WTO. "We believe that the country-of-origin legislation is creating undue trade restrictions to the detriment of Canadian exporters," Minister of International Trade Stockwell Day said in a statement. The WTO confirmed receipt of Canada's complaint. Canadian farm groups...