But supporting political candidates is not tax exempt. You cannot enjoy a tax-exempt income as a minister when you are actively working for a particular political candidate.
You missed my point...The government doesn't have the right to tax churches no matter what is said inside the church. That being the case, they don't have the power to remove their tax exemption. Churches do not need a tax exemption.
I disagree that a pastor/priest cannot bring pressure on politicians who do not practice the tennents of their faith. The Pope can excommunicate. The pastor has an obligation to his flock to give them guidance when politicians espouse views that oppose church teachings - and the IRS doesn't have to like it!