No, Canada and the US have good connections, peace and
share the same view as how the borders should be drawn.

When one party doesn't like the present state, it will begin
a war, civil or foreign. So now, they can either call it justified
by greed, saying it's their right to change the present state
because they can, or they can go the easy way and
tell the world it's for their believes. It's easy to argue with
reasonable people, but you can't argue with a 'believer'
about his faith. If his faith tells him to kill, it's senseless to
talk about peace. If it tells him to conquer, he will. And he
doesn't even have to abide to the morals that apply. He
is believing in his cause and that's his justification for
doing everything his greed tells him.

Other than that, neither the US nor Canada are being
controlled by a system that resembles a medieval monarchy.

( Oh, and Canada is not worth fighting over, they don't have
anything the US needs... just kidding )