In this article on the reliability (or lack thereof) of CAIR polls, Howard Fienberg makes this interesting observation:
[CAIR] also continues to insist that, “There are an estimated seven million Muslims in America,” based on its 2000 survey of mosques, while a STATS investigation in November estimated the number is closer to about two million, give or take a few hundred thousand.
Huh. Imagine that. A pressure group overstating its numbers.
(Link to stats.org is in the original)
UPDATE: Stupid me. In my haste to make sure the population article was linked, I forgot to link the polling article 🙂