The US has no more interests in Poland than it does in Ukraine.
No real interests at all.
And no POTUS would ever get a majority of the American people to go to war with Russia over Poland.
So the warmongers can fluff and puff as much as it suits them. But I suspect Poland can read the tea leaves and knows, NATO or not, the US will not go to existential war for them.
Ukraine is like the somewhat shady guy who gets into quarrels with his much shadier and aggressive neighbor that nobody likes.
Poland is like the loudmouth scrappy cousin who also gets into quarrels with the disliked neighbor, but has always been good to you and has always had your back when you got into fights.
Too late for that. We have a treaty obligation to defend Poland.