Re: Bobak Ferdowsi
Nah, you're missing it entirely. In America, as soon as you emigrate, you become '****-American'. Instantly. You are now just as American as the WASP down the street. As as soon as you know the patriotic chants (hint: "USA! USA! USA!" goes down pretty well), that's it, you've made it.
Contrast that to the UK, where even 2nd and 3rd generation immigrants will cling forcibly to their old nationality, and not consider themselves "British" in the slightest (qv the Tebbit test). I think the US does a better job of integrating (legal) immigrants into mainstream society than any other country.
Having said that, it is funny in cities with strong Irish links (Chicago, Boston etc), on St Patricks Day, everyone is Irish. Even the Mexicans!