Im actually fully in agreement. Of course, the idea of the USA annexing Canada is laughable right now, but if you entertain it for a moment... it could shatter the entire Western order. Not because Canada could resist the USA, but because it would break the very foundations many people believe the Western world is built upon.
Even a relatively bloodless annexation has massive potential to radicalize the masses within the imperial core.
As others said before it is HIGHLY unlikely to happen....but if the US seriously would invade Canada I would at the very least give critical support to Canada. It would be another mark against the US on the Worldstage if the US invaded or even peacefully annexed one of its closest allies. It would make even NAFO dogs uneasy if that happened. Now this is not me saying it would be good if it happened...but if it happened I feel like it could increase the instability of the Western block by a lot.
My 2cents as an Armchair historian
Meet me at 325 Superior Ave., Cleveland, OH 44114. Im waiting for you. You can bring a friend if you are scared or come alone. I will never back down from a challenge. 1v1
We can spend the whole day at the library and afterwards go to a waffle house.
Kind of a bad look Sonic 
Heresy is stored in the balls
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Gives me retro sci-fi vibes
While X4 looks cool just from a glance it seems like a game I would need to watch a 3h youtube guide first just to get a basic understanding of the game. (Not opposed to do the work to get into the game ..just dont really have the time for that atm)
Thanks for the recommendation though.
Infinite Luigis on the first World 
Mood. I just wanna be cute -pet puppies and wear frilly dresses 
Calling in sick while you feel prefectly healthy
Exactly. The chance of Marines storming Alberta is like 0....and one has to assume some higher ups would be aware of all the implictions a US annexation of Canada would have. But who knows....