Lancer; I've had a red hat, well, helmet, as my avatar for 25 years on this board (and the board that I sought political asylum from to post here).
I don't expect Canadians to agree with America's policies. I don't expect Americans to agree with them either. I expect debate about that stuff in forums for political discussion, IRL or online. We influence, we get influenced, we vote, we act, we adjust to changing conditions, political parties adjust to us, we do it all again.
But on my visits to Canada (which have always been to see friends or as a tourist), I would find it quite rude to be booed at or held to account for the actions of my government, whether I agreed with 75% of it, 25% of it, or just agreed with the fact that the people who set my country's foreign policy were duly elected and that carries with it a legitimacy that I ought to respect.

