Well NATO works both ways, and we’ve seen recently what happens if russia decides to walk into a non-NATO country.
If russia walks into the USA then NATO (probably renamed to the European Defence something) will be sitting back going “hey, sucks to be you. Shame you’re not in a mutual defence pact or something.”
Well you should ask them. Respectfully, without interrogation, and as part of a wider conversation that overall seeks to strengthen your relationships with your neighbours. You might find there is some sense there.
I’m from the UK, not USA. But I can see why some might vote for Trump. I wouldn’t, personally, because of stuff he’s said, but if you accept the premise “sure he speaks crazy but what he means is [non-crazy stuff]” then maybe there is some rationale behind their choice, and you might find you’re not as different as you think.