In 2008, the trial and conviction of five leaders of an Islamic charity for funding the terrorist group Hamas exposed the vast Muslim Brotherhood network in the U.S. and its stated aim, according to FBI evidence, to “destroy Western Civilization from within.” Along with the convictions, the Department of Justice named 300 unindicted co-conspirators in the plot, which included many of the nation’s most prominent Muslim Brotherhood-related organizations. Among them were the Council on American-Islamic Relations, the Islamic Society of North America and the North American Islamic Trust. Nevertheless, just one year later, Department of Homeland Security officer Philip B....