What do the Clinton State Department, Republican activist Grover Norquist, Bush FBI director William Mueller, Senator Joseph Lieberman, the Washington Post, and the National Conference of Catholic Bishops have in common? They all fell, in one way or another, for Abdurahman Alamoudi, a Muslim-American leader who turns out, according to a federal indictment, to have been in league with the terrorists. Call him the fifth-columnist who duped the Beltway establishment. Alamoudi was an invited guest at a 1998 State Department religious freedom event. He gave $10,000 in 1999 to an Islamic free-market institute on whose board Norquist sat. Mueller spoke...