Some of this actually connects up with what I’ve written about ‘thick citizenship' and my critique of dual-citizenship. I think our equality and shared community as citizens rests on our citizenship being more than a matter of travel documents and accidents of birth.Marshall defends the US, not as a republic, but as such.
His arguments for citizenship, in context, here. With all his mocking of Republicans on racism and DOMA etc. his blindness is almost complete.
google site search, talkingpointsmemo.com: "white people"
I'd never read Marshall's original post on Snowdon, and in fact on Manning as well. It's impressive.