Ha, this is hilarious. The 'Canada should grow a pair' group is basically saying Canada should assume the position and let the US dictate trade rules. What is that you want - Canada to stand up for itself or Canada to bow down before the one we serve?
IMO, using the oil industry would not necessarily cost Alberta much at all. Oil is in very short supply, so an export tariff would most likely be passed on to the US consumer, not the Canadian producer. The US has no real option to replace a million bpd of oil along with about 3 TCf of gas per year. This is a lot of leverage. I don't get how it is anti-Americanism to suggest Canada should simply apply the penalties it jointly agreed to with the US via the NAFTA agreement when the US acts illegally.