There's no question. The goods have to go somewhere, and if there isn't capacity in our ports, they will flow south of the border if there is capacity there. Generally speaking, particularly in terms of containers, they are significantly more expensive. I'm told it's about $500 per container on average. These are costs that will get passed on to Canadian consumers in imports.
It's also a question of access. There are very limited cross-border rail routes. There's no question that more traffic would have to move. A company in Saskatchewan, say, moving lentils and moving specialty crops for export would likely be in a position of having to ship to Vancouver and truck south, and that's a problem.
It's not as big a problem for the Walmarts and the Canadian Tires, because they inevitably hedge their bets. They use multiple ports. However, for a smaller shipper, it would prove a significant challenge.