With the world’s longest and most commerce-active border, the United States and Canada have maintained an intimate relationship for over two centuries. A shared cultural heritage, trade necessities and proximity have meant that the two nations have grown up together, and by virtue of this, have grown to rely heavily on one another.

“It’s’ very hard to find a substantive client in the United States that doesn’t have a Canadian operation or vice versa… The fact of the matter is that many of them act like there isn’t a border there. If you look, for example, at the Fortune 500, of those 500, more than 450 have operations on both sides of the border, and of those 450, 90 percent of them talk about North American operations, not Canadian operations versus U.S. operations,” says Joe Andrew, global chair of Dentons.