By Adam Taylor
Washington Post

It may seem like a modern fairy tale, but the upcoming wedding of Britain’s Prince Harry to American actress Meghan Markle will come with some mundane hurdles. Perhaps most inconveniently for the British royals, this transatlantic partnership could end up involving the United States’ Internal Revenue Service.

Buckingham Palace announced Tuesday that Markle will become a British citizen after her wedding next year. Although some foreign politicians are required to give up their dual citizenship, there are no similar rules for British royals — and there already has been widespread speculation that the union of Prince Harry and Markle eventually could result in some British royal children wielding American passports…

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