I have no desire to live anywhere else and I have no desire to go fight a war but if war comes to me I'll do what must be done.
Yeah, the home team usually has the advantage.
But, I don't ever really see a Red Dawn type invasion in the US. At least not initially.
At first, a low yield nuke in orbit to shut down most electricity and electronics would cripple the majority of the North American continent (Canada and Mexico as well).
This would set in motion a domino affect where the people here would take out large numbers of their fellow countrymen who would later be the resistance that the invader wouldn't have to deal with after we're weakened to the point where they would launch a ground invasion.
It would start in the major cities and financial and government locations now. Those that can be made to pledge allegience to them will stay in power, those that don't will be made an example of.
Sadly, many people at that point will be tired of fighting and struggling and wanting their lives to get back to "normal" would do just about anything/anyone to get that back so at the end of the day, we'd be the ones largely fighting each other. At least for the first while, then you'll be outnumbered by the weakest that will turn you in to their new handlers.
Half of them already lick the hand that feeds them (Samuel Adams quote).
Such is life.
Not much ever seems to change. This is how humans have done for millennia.