Certainly the fluctuation in the exchange rate, the volatility of the exchange rate, and the rapid appreciation of the exchange rate are very difficult problems to manage. It's not the fact that the dollar is at par or is at $1.10--companies can adjust to that--but it's that rapid volatility.
But if you are looking at issues around a monetary union, our members would probably have various ideas about what level we should peg the currency at. I'm sure there are a number of companies that would have loved to peg the currency at 62ยข U.S., but in so doing we'd be locking in a very low rate of productivity as well. At $1.10, I'm sure other people would have different views about the currency's level.
So I think there are a number of good economic reasons why we would want to keep a currency that is unique, a currency that can adjust to Canadian economic circumstances. But clearly, we're in unusual circumstances in Canada and the United States right now.