When annexation happens I do not expect the US to be interested in Quebec because of language. I suppose that means that sovereignists ought to be in favor of US annexation.
The Americans know as much as me that quick and painful assimilation is possible. Why wouldn’t they wish to impose it on my nation?
It's possible that the US would annex Quebec and similarly keep it as a territory, but more likely is the US not bothering with it at all; why bring within itself an ethnic conflict that has bedeviled Canada for 250 years?
But even setting aside the unlikelihood of Quebecois used to having so much say in governing Canada being happy with no longer having voting delegates in the national legislature, surely any such benefit for the US would be a lot less, relatively speaking. And, again, why would we bring in yet another ethnic conflict into our country?
Canada is indeed an anomaly. I can't think of another circumstance in which two countries that
* share land borders
* are 95% culturally, economically, and politically identical
* do not have longstanding historical grievances against each other
have not unified after two centuries; if anything, this fact implies that annexation is more likely than not to occur, perhaps sometime this century.
Americans on either side of politics think that Canada is full of super-leftists (and there is no shortage). But were Canada a part of the US in 2016, Trump would have won AB, SK, and quite possibly enough of the GTA (the parts that loved Rob Ford, and as "Ford Country" has repeatedly won the province for Doug Ford) to win ON, the province most resembling MI/WI/PA, the three states that Trump unexpectedly won the election with.