At first glance, it is easy to chalk up the train wreck that is the NAFTA re-negotiations to Prime Minister Justin Trudeau’s bad luck. But in politics, there’s an old saying that you make your own luck. And there should be some tough questions asked and accountability demanded on how it all came to this: a last minute “take it or leave it” ultimatum for Canada to sign a trade deal seemingly reached between Mexico and the United States while Canada watched from the sidelines for five weeks. Two years ago, when a populist presidential candidate tapped into NAFTA as...