Some of the biggest, and most politically manipulative corporations in America are churches: tell your congresspeople that it's time to take away their tax-free status, and have them help support the government they are trying to create.
Why is this important?
For the last 30 years, churches have been more and more political, telling their parishioners who to vote for, what issues to vote for, etc., all the time growing wealthy on tax-free donations. The Constitution assumes that churches will be apolitical, small organizations: but today they are corporations, and, like all corporations, they should pay taxes.