Sure, but then they usually don't consider themselves "American" or what have you. They consider themselves Iranian or Chinese or whatever nation they came from. Not until they've identified somewhat with what it means to be "American" (or British or whatever) do they consider themselves primarily American. At that point, they DO have something in common.
What difference does it make what they "consider" themselves as? We all know the stereotype of Americans who claim to be pretty much anything (Irish, Italian, Scandinavian, Asian, African...) - anything other than American - on the basis that their great-great grandparents were. Obviously they're not any of those things, they're American with ancestors of whatever nationality, no matter how they think of themselves.
Having citizenship is just a legal status, it is not necessarily the same thing as being a member of that nation (despite the fact they are legally of that nationality). To really be a constituent member of the nation, you must identify first and foremost as a member of that nation, and not as something else. Citizenship is entirely irrelevant; a person can consider themselves primarily of a particular nationality without even having citizenship (children born in refugee camps, for example).
Why? Where do you get this principle that nationality comes from self-identity?
Only legally. They don't consider themselves "British" or "Englishmen" and nobody else does either, except in a purely legal sense. If a group of them are in some foreign country, nobody will describe them as "those British guys" even if they know their citizenship, will they? If they adopt some of the civic values of the British, then they might be considered that way by some (those who favour civic nationalism over ethnic nationalism).
I don't understand the concept of "only legally" in this context. You might as well say that something is "only legally" a crime. It's the law that determines whether something is a crime or not; and it's the law that determines someone's nationality. If someone's passport says they're British, then I would certainly consider them British no matter what they sound like.
The problem with the view you're defending is that it plays right into the hands of people like the BNP. They too believe that nationality and culture are identical, and conclude that people who don't match their understanding of "British culture" are not really "British" and have no business being in Britain at all. Which is why they want to deport everyone who follows a "non-British" religion or has skin of a "non-British" colour.
This is an extreme example but it illustrates the fatal flaw of this "nationality equals culture" view, because how do you define culture? How do you decide whether two people are sufficiently culturally similar to count as having the same nationality? Do they have to speak the same language? With the same accent? Do they have to like the same music? Do they have to have the same political views? Presumably not. But then what is to stop (say) a British person and an Irish person - or a Canadian and an American - from counting as having the same nationality, if they are culturally very similar? Yet they
don't have the same nationality, do they? The intellectual psychiatrist from Seattle may have far more in common with the intellectual psychiatrist from Vancouver than he does with the redneck cowboy from Texas, but he shares a nationality with the latter and not with the former. That indicates that nationality is not determined by culture.
The same goes for self-identity. What if you have two people from Glasgow, one of whom regards himself as proudly British, and the other is a staunch Scottish nationalist who wants to break away from Britain? Would you say that they are of different nationalities - one counts as British and the other doesn't? Yet they could be brothers with exactly the same upbringing!
The perceived legitimacy of extending citizenship to foreigners comes from the notion that civic and cultural values will eventually be adopted by second or third generation immigrants. When you see opposition to immigrant communities in Britain, this is the basis for the argument: they are not adopting the civic values associated with the British, and therefore, they should be removed or stopped from coming in or whatever. This is a nationalist concept; they perceive that these people are not part of the 'imagined community' and don't feel that they should remain in the country.
Exactly - this is the kind of intolerance that the view you're defending can lead to. If you think that being of a certain nationality entails holding certain views or behaving in a certain way, then inevitably you're not going to want people who hold different views, or who behave in a different way, in your country. But I don't see any reason to allow that kind of person to dictate the meaning of words such as "nationality".
Well, you're confusing legal status and cultural status. Nation is a cultural reference, not a legal one (keeping in mind that "nation" to mean "state" is a colloqualism, shorthand for "nation-state"). A state is a legal fiction, a nation is a cultural fiction. There need not be a state in existance for people to believe they are members of a particular nation; that's what self-determination is all about. Kurds, for instance, consider that there exists a Kurdish nationality and that there should exist a national state for that nationality. You've got the horse before the cart; the state doesn't bring the nation into existance (at least, not in the minds of nationalists) but the other way around.
Well, I would simply say that the Kurds are
not a nation, they are an ethnic group many of whom want to be
be a nation. And yes, in the minds of nationalists, the nation precedes the state, not vice versa; but as I say, I don't see why nationalists should dictate how we use these words, any more than sexists should dictate how we use gender-related language or homophobes should dictate how we use sexuality-related language.
On the other hand, yes, nationalism is tied into the concept of the state. But not in a synonymous way. It's related to it through the idea of self-determination, the notion that every nationality deserves its own state (whether it currently has one or not). Nationalism is inextricably linked in this way to the concept of the state.
The problem with that is that you haven't really given a clear definition of nationality. If you say that every nationality deserves its own state then you are making a moral claim about every nationality, and that commits you to the view that these nationalities are
real entities, not simply convenient fictions that people choose to believe in for whatever reason. But the very vagueness of national identity on your definition of it makes that highly implausible. Should Scotland break away from the UK because many Scots are nationalists? What about those Scots who are not nationalists? What about Northern Ireland, where only a minority want to break away? If Kurds deserve a state because they are a nation, what about Texans? Don't they count as a nation, and if not, why not? Or Cockneys? Or Millwall supporters? Once you start hypostasising culture groups and assigning them first the status of nation and then rights of statehood, where do you stop?