

Ahh, but you’re missing the bigger part of the equation: one of Trump’s first EOs this time was the requirement, by April 20, for the Pentagon to put together a recommendation on whether or not to utilize the Insurrection Act to declare martial law. I, and most others, are thinking this is purely a formality with the departmental purges - and once he’s done that, it hardly matters whether you like them invading Canada or not.
Now, THAT BEING SAID, the military already has a manpower issue, has for a decent while. I do not think we could effectively lock down a country the size of the US, or even the major metros on both coasts, AND fight a war of invasion. Even unofficially deputizing all the various militia types, AND bringing local/state PDs and Nat Guard under federal control, I don’t think they have enough.
They also don’t stay in one place, and can just randomly show up in a place when you’re, say, doing stealthy stuff. Suddenly assassinating a whole outpost of orcs becomes “aww shit, Feldûsh is here, and he’s immune to stealth attacks” or '“oh no Roggvir just showed up, he’s riding a warg and so are the other 4 guys he pals around with”.