think this conversation needs a canadain point of view. NAFTA is supossed to encourage free trade but that simply hasn't happened. canadain exports into the U.S. (i.e. softwood lumber)have been taxed and tarrifed (softwood lumber was eventually taxed to cost the canadain economy 6 billion dollars) it has not been upheld. granted it has caused greater trade between the countries wich is great but the thought of a real trade union may mean greater assimilation of canada into the U.S. wich is something many canadains are opposed to.