In 2002, the spokesman for FBI director Robert Mueller memorably described the American Muslim Council (AMC) as the "the most mainstream Muslim group in the United States." A year later, the Catholic bishops called the AMC "the premier, mainstream Muslim group in Washington." Its founder and long-time chief, Abdurahman Alamoudi, was a Washington fixture. He had many meetings with both Clintons in the White House and once joined George W. Bush at a prayer service. He arranged a Ramadan fast-breaking dinner for congressional leaders. He six times lectured abroad for the State Department and founded an organization to provide Muslim...