I see both. You can look at examples. The RCC has done a good job of trying to harmonize. Two examples they give are Cheerios—they can sell Cheerios on both sides of the border—and, from our perspective, life jackets. It was a Herculean act to align those regulations to sell those two products.
Where I'm most concerned is in the area of ballast water, where the Americans are not a signatory to the IMO and the Canadians are a signatory. There are some within Transport Canada who are taking an overly aggressive approach to ballast water and trying to regulate domestic American transits via a transit standard. Imagine the American government trying to regulate a shipment between Thunder Bay and Sarnia and how outraged the Canadian people would rightfully be, as they were when the State of New York tried to do that. We're on the receiving end of that. There's a good example of a divergence for no good reason.
Notice that I used the word “harmonization”, not “synchronization”. They can interoperate and still be different. I think that's the goal.