Rights CAN be signed away.”
I agree with that. That doesn’t change the point. I also agree you can make rules but the rules can’t be abridging freedom of speech.
OK, you are starting to confuse me. My point is that the Tax Exemption is essentially a self-imposed gag rule. If a church doesn't want to follow the agreed-upon rules, they have oly to give up the associated tax exemption.
But the government can't directly coerce them into saying or not saying anything.