Regional trading blocs involving countries with very uneven economic clout make no sense. Trump and the U.S. can dictate NAFTA terms because the U.S. accounts for about 80 percent of the bloc's total economy. Even in the EU, where weaker economies struggle to compete with the German colossus - albeit the Euro also plays a role in making the situation even more lopsided - cracks are appearing in the trading bloc. We have to get back to basics in all of this and if international trade is to become fairer vest our efforts in an improved WTO regime. Countries that don't comply with WTO rules and standards should be ostracized until they're brought into line. Canada and Mexico can do little on their own, or even together, to overcome American arrogance and intransigence. We need the rest of the world involved in the effort.