I have to speak from the perspective of large enterprises, and in that context it's important to recognize the extent to which trade flows are linked to investments. Canadian companies on the large end have become very enthusiastic investors abroad. Canada as a country is a net investor abroad now, as opposed to attracting investment here.
The two-way flow is important, but as companies invest, one of the points that was made by one of my colleagues here is that a large portion of the trade is within a sector, within supply chains within a sector, and even within individual firms that have operations on both sides of the border. I think we have to understand that the trade relationship goes much beyond the basics of not selling anything in the United States and needing to explore that market. We need to understand the broader dimensions of this and the investment flows as well as the trade flows.