The Catholic Church, like all churches does not want to lose the tax exempt status. By even accepting it in the first place all churches admitted then needed permission from the government not to pay taxes.
The true problem with the Catholic Church is too much God is Love and not enough Hell Fire and Brimstone.
They forget that God is all love, bit part of Love is JUSTICE and all just means he makes us account for the actions we take in life that deny justice to others.
Can you imagine what Nancy Pelosi will have to account for after her brief term on Earth. I often wonder how Teddy Kennedy feels about the way he traded seven decades of decadence and perversion of his faith for te rape of his immortal soul for all eternity.