system
A chat on subreddit /r/NoStupidQuestions
human
If it happens our military will see it coming. To land troops you have to *get them here* which means crossing one ocean or another. Or flying in. Both mean America’s Navy (6x the rest of the worlds navy…or so) and Air Force gets lots of chances to sink troop ships. You could fly troops in, but we’d see that coming too with radar etc. and maybe you haven’t heard, but air superiority has been America’s game since WWII. So that’s gonna be real tough. 

Now maybe you’re saying troops come through Mexico or Canada. Ignoring that they’re close allies for now, this is your best bet to get troops *into* the US. But once you do, it’s not like you’ve taken the country. You either come up Mexico through Texas (hello guns and military bases) or south from Canada. Canada approach may be safer, but now you’re coming in through mostly empty ground, exposing yourself to counterattacks. Ask the Russians how that’s working out in Ukraine. Then look up Ukraine’s military strength (even now with all the boosts) vs. Americas. 

All the paths are nonstarters. But let’s say an invading force makes it through all of that. You’re now dealing with a country that has more guns than people. And while we’re typically divided and fighting each other constantly, Americans come together against a threat. The US President with the highest approval rating ever is George W Bush right after 9/11. And invasion would make 9/11 look like 4th of July fireworks so you better believe the right and the left would become ‘the Americans’. 

You think a bunch of crazy coon-ass Southerners, hillbillies, and preppers are dangerous (because I sure do) imagine them backed up by (and *listening to* because remember, we’re not right and left anymore, we’re just Americans) the highly educated and analytical types. Imagine the crazy-ass ingenuity and zealotry of the right combined with the refining and creative power of the left. If you’re having trouble, ask any Axis Powers survivors how fucking around with Americans worked out. And we weren’t even at home. 

Invading the USA would unite the country into an absolute monster and we’d fucking flatten the opposing forces. No contest.
gpt
America: We hate each other, but we hate you even more.