At the White House petition site:

We petition the Obama Administration to:

Tax Churches

Churches are currently exempt from taxes since they’re listed as non-profit organizations, in spite of separation of church and state.

However, most if not all churches influence the way American citizens vote. Also, a megachurch profits(on average) about $6.5 million per year. An estimated $71 billion per year is lost in US tax revenue because of religious tax exemption. If taxed, the national debt would be paid off.

Church institutions are politically affiliated, as well as businesses. They should not be tax exempt.

Created: Jul 23, 2014

Issues: Budget and Taxes

Signatures needed by August 22, 2014 to reach goal of 100,000 94,727

Total signatures on this petition 5,273

[emphasis added]

Among the forest of petitions started on the site this one is actually generating more interest than most.