The biggest obstacle to adopting the best ideas from Europe in the USA is that
in general, the people of European countries think of everyone in their country as part of "them" and don't resent helping them,. (sadly, that is changing with increased immigration in those countries) In the USA, much of the resistance to helping the poor is that they are considered as "others" because of their race and/or nationality.
"Bob Herbert, a New York Times columnist, reported a 1981 interview with Lee Atwater, published in Southern Politics in the 1990s by Alexander P. Lamis, in which Lee Atwater discussed politics in the South:
Questioner: But the fact is, isn't it, that Reagan does get to the Wallace voter and to the racist side of the Wallace voter by doing away with legal services, by cutting down on food stamps?
Atwater: You start out in 1954 by saying, "Nigger, nigger, nigger." By 1968 you can't say "nigger" — that hurts you. Backfires. So you say stuff like forced busing, states' rights and all that stuff. You're getting so abstract now [that] you're talking about cutting taxes, and all these things you're talking about are totally economic things and a byproduct of them is [that] blacks get hurt worse than whites. And subconsciously maybe that is part of it. I'm not saying that.
But I'm saying that if it is getting that abstract, and that coded, that we are doing away with the racial problem one way or the other. You follow me — because obviously sitting around saying, "We want to cut this," is much more abstract than even the busing thing, and a hell of a lot more abstract than "Nigger, nigger.""
Southern strategy - Wikipedia, the free encyclopedia