Dr. Mark Christian, president and founder of the Global Faith Institute, which seeks to educate Americans about the true nature of mainstream Islam, says about 80 percent of the roughly 2,800 U.S. mosques are controlled by the Muslim Brotherhood, an organization whose stated goal is to bring the nations into compliance with Shariah law.

You have a new mosque opening every week in America,” says Christian, a former child imam who grew up in Egypt the son of a Muslim Brotherhood operative before fleeing his homeland and converting to Christianity as a young adult.

Of the thousands of mosques in America, nearly 80 percent of them have been opened since the Sept. 11, 2001, terrorist attacks.