It takes a lot to get Canadians angry, but when an economic war is declared on your country by your number one ally, feelings of betrayal can quickly turn hostile. Case in point the crowd in Ottawa booing the American national anthem at last Saturday’s hockey game. Expect more uncharacteristic actions of hostility by Canadians if this provocation continues or escalates further. Personally, I am not buying that Americans won’t care what Canadians think. Yes, they did vote in Trump, but they didn’t sign up for a trade war with their northern neighbour. Properly calculating the American public’s response is vitally important in determining how Canada should react. It should also be remembered that this is Trump’s trade war with us, it doesn’t have broad support even among his own party. Of course they will go along with Trump,...