I'm no expert on the border. I wouldn't claim any expertise on perimeter security.
I think we are inevitably being forced toward perimeter security. It will cause us serious problems. It will force changes in our immigration policies, in our refugee policies. But I think we will, in our own enlightened self-interest, namely our economic self-interest, be forced to recognize that we will need to make those changes in order to keep access to the market that is most important to us.
A lot of Canadians think that the great China market or the great India market is going to displace the United States with us. I don't believe this for a minute. The United States is the world's richest market and will remain so, and we simply must keep access to it by whatever means necessary. If that means a common security perimeter, we will be forced to do that.