quote: I bet they didn't get asked about the content of their prayers.
You should check every lefty political groups info page and you'll see that they are all listed as 501(c)(3)'s just like churches, synagogues and mosques. Even the Americans United for the Separation of Church and State (Barry Lynne's organization) is a 501(c)(3).
quote: Yes — Americans United is designated by the IRS as a 501(c)3, non-profit organization. You may access a copy of our most recent IRS 990 form here.