Do trade deficits with neighboring countries make America richer?
Core argument: Canada's tar sands oil flows to the midwestern United States because pipelines make it a nearby accessible market, and Krugman argues such exports account for the bilateral deficit while making U.S. energy cheaper.
Oil from Canada’s tar sands is shipped to the midwestern United States because it’s a nearby market that can be accessed by pipelines. Mexico’s story is a bit subtler. Much of North American manufacturing, especially autos, reflects a highly integrated production system that sprawls across all three countries. This system relies on just-in-time production — that is, automotive factories have to be located close enough that their inputs and outputs can arrive quickly by road and rail, rather than taking several weeks to cross the Pacific. Mexico, which has much lower wages than the U.S. or Canada, specializes in the more labor-intensive aspects of production. And I’m reasonably sure that Mexico’s exports of labor-intensive segments of the value chain play a similar role in bilateral imbalances to that played by Canada’s oil exports. Pretty clearly, the Canadian and Mexican exports that account for our bilateral deficits make America richer than it would be without them. Canadian oil makes our energy cheaper; by handling the labor-intensive aspects of production, Mexico makes U.S. manufacturing more competitive.

