No, it's not with democracy, it's with the values of the populace. If you have a predominately good people, then many political systems can work; if you have a predominately duped and corrupt people, no system can work.
If you think that the problem with the U.S. is that everyone is hopelessly enamored with Rorty or other postmodernists, then, I think maybe you are out of touch with "reality" just a little bit. :) I don't think the NRA is going to start quoting Derrida any time soon.
