Two problems I see are: 1) if any church is taxed (and the tax would be substantial, I'd guess, since this is a mega church we're talking about), next will come the effort to tax all churches; and 2) the power to tax is the power to destroy, so there will be at least some people in government who would like to drive religion in general out of society, and this change, if approved, would be a windfall for them.