Snotty Canadians always expect a free ride.
They have no fears of attack due to the US protectorate umbrella which by necessity extends to all of Canada.
Every rich person there who gets really sick comes here to get treatment.
They import every manner of foreign immigrants and let them run loose all across our several thousand mile border.
They create more or a carbon footprint per capita (not that I care about any carbon footprint) than anywhere on earth but lecture the US on our consumption.
Screw them.
The U.S. lost that trade dispute in every trade organization that heard the case.