This will soon be happening with all religious real estate tax exemptions as it did with zoning regulations. The only exemptions will be for secular non-profits and education institutions.
In Pittsburgh, since they can't go after the education institutions, they are going after the students.
What was funny is that a group of trustee's for a historical cemetery sued saying “What do you want us to do, dig them up?”.
The Iowa courts have suspended the fees for now. But I figure it will start again soon.
Oh well, the Church is much more than the building. Something we in the West have often forgotten.