Like dot, I find this question's broadness somewhat difficult. That said, since this is a website about anarchy, I will assume that what you mean is what is wrong with the u.s. for anarchists. Also, i'm gonna assume that you mean the u.s. culture, since the u.s. state is easy to describe as wrong entirely from an anarchist perspective.
With those self imposed limitations, the question becomes what do you think makes the u.s. a worse place for there to be anarchy?
I think the position of being a first world super power with a collapsing economy puts many people in a situation financially where they have just enough to lose. And compared to other first world nations where people might have social/economic security to give up by resisting, we have a penal system here that's far more barbaric and intense. The combination of the two, which is certainly not a condition for all, but many, is a powerful disincentive towards risk, something that anarchy leans towards pretty strongly.
Another "wrong" of the u.s. is the media, but I don't know if its about how there is too much t.v. or commercials or angry video games or what have you relative to other places (because this question certainly implies relativity). U.S. media creates an image that excludes other places from the imagination of its consumers. Other countries, if nothing else, have so many shows, movies, and songs from the u.s. in their daily media that people grow up knowing the world is more than what they can see, which helps them practice imagining other possible ways of living. That is the kind of imagination that anarchy comes from.
Not just in media, but also IRL, the places we think of as "better" for anarchy are often places where people in them are closer to other projects and people and countries and cultures and travel more freely, building connections and cementing the understanding of states as abstractions.
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