Well, not to put too fine a point on it, but if that be the case, why should Americans "care much" about anything not in the US?
Just saying, you can't expect to get what you yourself won't even give.
I am all for cooperation in solving common problems.
There are some batshit crazy people here. Think mass shootings in walmarts, targets and the occasional black church every now and again. Those people get into power, they won't be satisfied with just walmart shootings. Fairly certain they'd try to take down all the "enemies of freedom". Which would be, pretty much, anyone they say is an "enemy of freedom". MidEasterners, Jews, Asians, South Americans, anyone in Europe to the left of themselves ideologically. Pretty much everyone.
Christian nationalists represent an existential level threat not only to the US, but everyone on the planet. If they come to power, the best outcome would be Russia and the US go at it and obliterate each other. Ridding the rest of the globe of both centers of foolishness.