The IRS must remove the tax-exempt status of any Church that attempts to influence the way its members vote in an election for public office.
Why is this important?
Churches have power over their members, and can be a significant force in an election. It is clear, for example, that some churches pressure their members to vote for a given candidate based on her/his alignment with their particular teaching. However, the involvement of any tax-exempt organization in the political process is strictly forbidden by the IRS: "...it may not participate in any campaign activity for or against political candidates."