The American perspective is that that are. Many would hard pressed to say which were in the EU and which were not.

I'm pretty sure that most Americans don't know or care about what the EU is, but they've heard of the UK, Italy, Poland, etc., and would readily tell you that the UK (they would probably call it 'England') is in Europe and that Europe is a continent, not a bureaucracy. Foreign bureaucracies are just uninteresting to outsiders, whereas people go visit Rome, Venice, London, etc.