Comment by umanwizard

"Sovereign" might have been the wrong choice of words, then. It's not a binary thing -- sovereignty is a leaky abstraction that groups together a very wide range of different statuses. US states are not 100% sovereign, but what I was getting at was that they are, in many but not all respects, more similar to sovereign nations than to administrative subdivisions of a country. They have totally independent legal systems, budgets, administration, and so on. Even in countries in Europe that are also federations, the level of sovereignty of the sub-entities is usually less (in Germany, for example, criminal law is handled centrally, not delegated to Lands).

One notable exception is the sub-entities of the UK (England, Scotland, Wales, N. Ireland), which have a high degree of autonomy.

As for the historical bit, we have simply had more time than you :). The current push for European integration only started after the war - 70 years ago. It's been going on in America for over 200 years, and our last major internal war was 150 years ago.

I'm not disputing your sentiment, though. I think anything that improves freedom of movement for people is great, and I'm happy that Europe has been moving steadily in that direction since the war.