What's worst about this is that this seems way out of proportion. He signed (and co-authored I believe) a petition arguing against NSA surveillance out of concern for its effects on democracy - a move that is absolutely in agreement with democratic values. Is there anyone who could argue that barring his entry to the US is justified? I don't like hyperbole but this is indeed truly worrying; I would expect it from Russia and China, certainly not from the former "shining city upon a hill whose beacon light guides freedom-loving people everywhere."