And the American Civil Liberties Union is suing the US government to challenge a no-fly list that has in some cases stranded Americans abroad. The suit was filed Wednesday on behalf of ten US citizens or permanent residents prevented from boarding US-bound flights. Ben Wizner of the ACLU’s National Security Project said, “There is simply no legal basis for placing a US citizen into involuntary exile. And to use a secret government list without any process to accomplish that goal is…unconstitutional.”