As of 2018 there were 65.5 million refugees [not economic migrants] on the planet. Exactly how many of these should the US embrace, 50%, 30%, or even just 10%. Now add perhaps the 100's of millions of economic migrants to those numbers as well. The US would cease to be a nation in it's own right, if not a downright another Venezuela, but on a giangatic scale if the border is even remotely weakened.
Exactly how much cruelty, trauma, death, and suffering are you willing to turn a blind eye to just to avoid holding corrupt powers accountable?
I wouldn't say it's a blind eye. I would say that most people say things like, "I hope kids in foster care find parents, but I don't want to adopt a kid." or "Homeless people should have homes, but I don't personally want to volunteer to build them." or "I don't want pets in a shelter to be put down, but I don't want to adopt any pets."
People care, but at the same time they do not have to do the things listed above. It's a delicate mindset.