The challenge of assessing Muslim population growth is twofold. On the one hand, Muslims artificially inflate their numbers to obtain more social benefits and political influence. On the other hand, total household counts are blurred by illegal migrants and illegal polygamy.
Daniel Greenfield, a Shillman Journalism Fellow at the Freedom Center, is a New York writer focusing on radical Islam. He is completing a book on the international challenges America faces in the 21st century.
William Kilpatrick is the author of Christianity, Islam and Atheism: The Struggle for the Soul of the West (Ignatius Press) and Insecurity (Post Hill Press).