There was a prophecy back in the late 70s that there would come a tax on churches in later decades. It would start out as a small nuisance tax, but quickly grow to be a church-killing tax.
If this tax survives a court challenge, it could spread.
Personally I would think that we are near the point where we must have an open discussion on the entire fiscal framework leading to major reform of all Taxes/fees aka revenue.
First stop IMO is to end non-profit/tax exemption for ALL organizations and these should become part of this discussion.