They are in denial like so many other issues .. Global warming, Gun, Equality , Education, women rights , A free ride for the rich in America , and of course Sociopathic Narcissistic as President . There are so many issues American choose to bury their heads in the sand about when in all fact they know what's true but it's all so INCONVENIENT. It requires them to " CHANGE " and that is a nasty word in America change is Un American and so is reality ... We have people these days actually cheering on the Prospects of a  Nuclear War With North Korea . That is how unreal Americans have become . It's INSANE and it's getting worse . I give you Donald J Trump as just a starting point . It will become much much worse and might not ever get better . Because Americans cannot grasp the reality of the fact .. We all live on a single Planet .. and that planet is home to all of us not just the USA ..America First simply means the other 6.9 billion people don't matter and that is just not realistic