Here is an article that calls for the end to the tax exempt status of churches. Now I know that a portion athiests will agree with the premise, but I think that churches bring a sense of stability to those that attend. They also do a lot of good work, food banks, utility assistance, etc. The author of this article also talks about the tax revenue it would generate. I think that the last thing we need is to feed the behemoth.
http://time.com/3939143/nows-the-time-to-end-tax-exemptions-for-religious-institutions/
There was a reason why we keep the "camel's nose out of the tent". Then again, would not expect someone writing for time to take high school civics.