I don't understand this behavior with some people being so defeatist about America. It's by no means perfect, but there is much innovation, growth, and development shown by her people.
I think US infrastructure and health care are areas:
1. Real needs exist for renovation.
2. Real examples outside US that works better and cost less.
It's just that the people somehow manage to still fail to achieve the desired results with reasonable investment. What went wrong? I cannot say for sure.
Democracy does not mean that "you have to screw in some areas". If there is a way to do it better, just do it that way. There is no inherent limitations of democracy which make it unable to learn, right?