Argument: Different GM labeling standards across countries is a problem
Peter W.B. Phillips and Heather McNeill. "A Survey Of National Labeling Policies For GM Foods." University of Saskatchewan. 2000: "So far, more than 26 countries have either adopted provisions or announced plans for rules to assist the market to develop and deliver labeled products. The challenge facing industry, national governments and international trade organizations is that each of the systems being developed has different tolerances, diverging application, and weak or inconsistent enforcement, compounding the tasks of international trade."