I also realized how hard it must be for American children of Asians to visit these countries. They look like natives so are expected to speak and act like them. If their parents haven't made extraordinary efforts to acculturate them in the home country's ways, they are likely to encounter real difficulties when they visit.
Just to reinforce this observation, read Alan Paul's discussion of how Chinese expatriates manage their dual identities while living in China. Would second-generation Pittsburgh expatriates face similar obstacles if they returned to the city of their parents?
I don't know the answer to that question, but I figure that a direct bloodline to the Burgh won't buy you insider status. There might be a liminal experience of having a romantic attachment to Pittsburgh, but the recognition that the city or neighborhood doesn't love you back (at least in the same way).
I'm a Pittsburgher first by choice and second by marriage. While I appreciate the region's parochial and provincial charms, I also realize that particular place can never be my home. You can see the same tension in Mike Madison's post about suburban and urban entitlements in Pittsburgh. For me, there is only New Pittsburgh. And that's why newcomers are so important to Pittsburgh's future.