Alright, let's just say that Guy gets captured in the first battle in Canada(which he nearly was) during the ARW. As a result, Quebec is not prepared well enough for the Americans. America takes Quebec, and the population soon starts turning somewhat revolutionary(but it would be more like Georgia or a southern state).
That's the premise. Not perfect, not deep, but that's the type of situation. Now, with that said, here's the question:
How would Canada shape out? I mean, access would suddenly be much more restricted, and, even then, America just got key ports and a large amount of good land.
Would Britain try harder to gain Alaska to balance it out, or would Canada simply fall into America's hands through some sort of "Ontario Purchase"?