Rep. Tom Tancredo challenged one of his Colorado colleagues but drew no response on Thursday in a flap touched off by the pope’s controversial comments about Islam. On Wednesday, Tancredo sent a letter to Pope Benedict XVI, urging him to resist calls to apologize over a recent speech that quoted a 14th century emperor who suggested that the Prophet Mohammed had inspired "things only evil and inhuman, such as his command to spread by the sword the faith he preached." Tancredo’s letter, which included criticisms of specific passages in The Koran, drew a strong response from Nayyera Haq, the Muslim...