Once again, Josh Marshall demonstrates why he's the best progressive journalist around these days, with this post on the truly terrible idea of allowing Mexican - Americans to maintain dual citizenship.

"I don't think the United States should allow dual-citizenship at all. Not ever. Not with Australia, not with Canada, not with Israel, not with Mexico. Not with anyone.

"Children present a unique case, of course. They should be allowed to maintain a dual nationality until they reach adulthood so they can make a mature decision about which country to adhere to. But why should any adult be allowed to be a citizen of two countries at once. And under what theory of citizenship does such a practice make sense?"

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