As John Helliwell reminds us, “border effects are still too large to 1 be ignored and too complex to be easily classed as good or bad.” (iv)  Regulatory regimes  As I just pointed out in discussing labour markets, there are many non-tariff impediments to achieving the full benefits of economic integration.
Among these, importantly, are the different national, provincial, or state regulatory regimes. Here, it seems to me that one of the key questions we should be asking ourselves is whether we have given sufficient consideration to “harmonizing” a number of our regulations with those of the United States.