They'll probably aim for statehood to be granted the rights in the US constitution. Although the US could always try and flood Canada with settlers or attracting immigrants. Most likely they'll accept the situation and vote for those who are willing to extend the rights to them.With the Canadian election being this past Monday, I have some ideas and questions on how different the state of Canadian politics would be pre-GW1 and post. First with the immediate prewar period: Robert Borden is mentioned as still being the PM during GW1; and in 1911, he came to power after a split in the Liberal Party under Wilfrid Laurier on the issue of freed trade, reducing tariffs, and cultural rapprochement with the United States. Of note, Champ Clark would never utter his wish to see the "American flag will fly over every square foot of British North America up to the North Pole" since since the CSA are state allies with the British Empire, which drove the issue against free trade in favor of the Conservative. But with OTL's relations and cultural animosity, the end results would be the same and the Liberal's may split further as a result.
Now with the US winning the FGW and annexing Canada as a whole, how long would it take for Canadians of various political backgrounds to ultimately accept the US and know the UK was never coming back after the Great Wars? That would mean among the Conservatives, Liberals, and small left wing parties that were the predecessors to the NDP. The Conservatives would react strongly against this the most and would make up the lot of the rebels; the Liberals would be a mixed bag as they had wanted to work with the US, but now their country is gone and the US are their new overlords; left-wingers would perhaps try to cooperate the most IMO through negotiations. Though when Custer becomes the Governor General, Canadians are universally opposed to his heavy-handed rule and have total hatred toward him. Long term once the US tries to make the former provinces into states, it won't be an easy process. A bit of speculation is that the US offers the chance for Canadians to serve in the Armed Forces to become citizens, but there'd still animosity. An idea from David in his After the End thread is that Canadians become the foremost constitutionalist activists in trying to have their rights recognized as US subject and citizens for those born after annexation that ends up working out for them in their favor. What are all your thoughts and opinions on this matter? What are your speculations for long-term rapprochement between the US and their former Canadian subjects when it comes to politics and society, apart from what was mentioned in the books?