I'm not saying we are all going to help the NCR but i'm guessing if we are to the annexation thing our characters would have to choose which (my character, being canadian would fight with the resistance). Now i'm also guessing that the enclave will be involved with this too, which opens up a third option. And canada probably has it's own government as well which opens a fourth option. If we do go with the annex canada fighting back it would open up alot more choices and plot/character development.

And for the game I always go with the NCR