LOL! America isn't threatening to invade Quebec!
Russia IS threatening all the small Baltic states, Finland, and even Norway. Constant poking with military aircraft, and jamming of GPS signals used by airliners, for example... I just read that one airline has cancelled flights into the (Latvian?) capital because of the Russian GPS jamming. There's a LOT more where that came from.
We're not doing anything at all like that to any of our neighbours.
If Quebec goes independent, join the BRICs, and goes into a military alliance with Russia and China, and lets China and Russia build military bases, we would hear a whole different story from US NeoCons of the “sanctity of international borders” and the “independence of sovereign states” ... etc. etc.