DAVID MARCUS: Canada sees Trump trade war as ‘life and death’ while Americans barely notice

Gary Mar is a guy who knows a thing or two about trade between the United States and Canada. As the president of the Canada West Foundation and a former minister dealing with trade for the Province of Alberta, he’s seen a lot — but nothing quite like the current asymmetrical trade dispute between the two nations.

America and our neighbors to the north face a Sept. 7 deadline to reach a new trade deal, or see crippling sanctions go into effect on both sides. But the citizens of each country...