They [the American authorities] can't actually believe that anyone would want to not be an American," he says. "It's not enough to send them a letter and tell them you've become British; you've got to go to the embassy to formally renounce your US citizenship. I'm a little worried that when I do this they'll pack me off to Guantanamo.

Bill Bryson: The accidental chancellor (November 15, 2005)