Sorry, dude, but I strongly disagree. Sure, the elderly, fat-assed traitors would fight..if they can move. The White Supremacist terrorists, like the Nazi assholes in Ukraine, would fight. Like Ukraine, the White Supremacist assholes are mostly fat-assed wannabes. Ukraine had a 1000 of the assholes compared to the 470,000 in the Ukrainian military and reserves. Let the Nazis be cannon fodder or watch them run. LOL
Bottom line, the US, awash in a sea of guns as the gun-banning Left constantly screams, would deflect any invasion quickly and retaliate with extreme prejudice.
FWIW, there's a good chance the Russian Army is seeing signs of mutiny. The two MI-24 Hinds which blew up a critical Russian fuel depot inside Russia, may have been Russian helicopters.
Without fuel to the invasion force, Russia can't advance nor send in reinforcements.
Occam's Razor: Are the Ukrainians supermen who successfully navigated the strongest air defense system in the world or, as we've already seen with fragging in the Russian Army, is it more likely pissed off Russians are revolting?
If Russia revolts, will Belarus follow? If so, will the non-NATO former Warsaw Pact nations assist?