The Islamist government of Turkey is building a 15-acre, $100 million mega-mosque in Lanham, Maryland. Prime Minister Erdogan visited the site on May 15 in a ceremony that was attended by the leaders of two groups linked to the U.S. Muslim Brotherhood. Also present was the Maryland Secretary of State, representing Maryland Governor and likely Democratic presidential candidate in 2016, Martin O’Malley. The mega-mosque is called the Turkish American Culture and Civilization Center and, according to the Muslim Link, it “will likely become the largest and most striking examples of Islamic architecture in the western hemisphere” when it is finished...