Well, that part of Canada was never the United States...unlike Georgia, which has been under Russian hegemony for a few hundred years off and on.
Actually it would be straight forward conquest and aggression on our part.
But no apologies. There are a lot of people in Alberta and B.C. who would welcome the opportunity to break away from the Bolsheviks in Ottawa; Western Canada, outside the cities of Vancouver and maybe Edmonton, is far more like the American West than eastern Canada.
It would be a war of Liberation! Think of it as adding another few Montana's to the U.S.
Don't be sad. It would be good for real Canadians, bad for the Third Worlders in Toronto and Montreal.
Just remember....only the dead have seen the end of war. The age old struggle against statist tyranny will never end.
A shocking suggestion I know, but there it is....