I don't think we want British Columbia. Nearly as looney Left as its neighbors just to the south.
Alberta I'd take, Saskatchewan, too.
I'm also not sure about Manitoba, they've tended to lean Left.
As for Trump's idea of absorbing the whole thing, the Democrats should be salivating at the prospect. Before Trudeau the Elder, Canada's self-image was connected with having remained British, since then, their self-image has been formed by being to the Left of the United States.