[jmorphy88]

> I don't understand how the caucasian-looking US population can claim to be the real Americans, ignoring that the US has been one of the richest mix of immigrants.

You can't be serious. American history did not start in 1980. The vast majority of the US population throughout its history has been European-descended.

[cm3]

I suppose I don't consider the ex-citizens of one of the European royally rules countries to be the same, but there's surely some unifying traits like Christianity.

Maybe all non-European immigrants were only brought in as workers (and also slaves), so your argument may be right.

Let me rephrase then: The US has always been an immigration destination, so it's interesting that some immigrants are seen as different enough to be singled out. Spanish-speaking immigrants and Chinese arrived in US america much earlier than the famous NY around the turn of 20th century ships from Europe with Italians, Germans, Irish, Russians did.

I don't have numbers to cite, so I'll stop arguing more :).

[jmorphy88]

> I suppose I don't consider the ex-citizens of one of the European royally rules countries to be the same, but there's surely some unifying traits like Christianity.

I don't either, but you did say "Caucasian-looking"...

A mass migration from any foreign culture (that is, highly different from the host culture) would be treated with alarm by the locals anywhere, in any country. It's not a phenomenon specific to the US. The US just happens to provide a particular historical instance of it. Vancouver seems to be providing us another.