I disagree. I do not identify with New Yorkers (or north east coast), Florida, Texas, California, Oregon, the rust belt, or the southwest. You probably guessed by now I'm from the Midwest. I also don't identify with the blacks, Hispanics, Cubans, Irish or Italians. All of these have rich and interesting cultures. I respect them, but they are not mine. When I meet one of them, we often have difficulty finding commonality. My point is that you would be hard pressed to find one specific example of something that relates to all American backgrounds. I think this is a good thing.