The story of the Swiss Muslim scholar Tariq Ramadan, who was to become Henry R. Luce professor of religion, conflict and peace building at Norte Dame before the Department of Homeland Security revoked his visa, has become a trope of the times. Some see in these events a story of how the new post-9/11 environment has been destroying an open society. Others see a sensible measure in circumstances of war. For an instance of the latter, see Daniel Pipes’ comments here. Scott Martens at Fistful of Euros has responses here and here. Ramadan himself has this to say in the op-ed pages of today’s New York Times.