One can only hope that on his trip to Canada this week, President Bush... EDWARD LOTTERMAN Comparing U.S., Canada can be instructive One can only hope that on his trip to Canada this week, President Bush kept his mind open to lessons from comparing the United States with that nation. There are few better ways to gain useful insights than by comparing the economic policies, institutions and performance of different nations. History and culture vary between countries, and they adopt different policies and institutions. At times the outcomes vary. In other cases, quite different policies lead to strikingly similar institutions....