Huh I was pretty shocked Canadians sound so much like Australians... we get along fine with the yanks for the most part but dig our heels in when we're told what to do, then it's "BUGGER YOU!!!" regardless of what the actual issue is. People hate being ordered around, especially if the person or country in question is far far from perfect.
My father is a farmer, he also served in the ADF (Australian Defence Force) and saw action in Vietnam alongside American troops, he has many a good word for Americans, yet once when I was out on the farm back a few years ago we were watching the late news while drinking a few beers, and my American friendly father, and grandfather (who severed alongside American's in WWII and Korea), started yelling at the TV about where "the yanks" could stick their trade policy.
It seems the American trade rep in talks with Australia started ripping on Australian trade policy regarding our farming industry and how it was "unfair" to Americans... all the while America has one of the most protectionist trade policies in the western world protecting their farmers from any form of competition, the sheer hypocrisy made my father so angry he forgot about all the good will he normally had to America.
And oh god, don't even start me thinking about what he said about American's position regarding the PBS (Pharmaceutical Benefits Scheme), at the time I swear he was ready to invade New York on his own.
Advise, Negotiate, but never never order, it just pissed people off. America already has a rep as being arrogant overseas, throwing their weight around is the last thing they should be doing, all it does is make people who might be interested in talking and making a deal more obstinate.