According to the first amendment of the Constitution of The United States of America; Congress is forbidden to prompt one religion over others. Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof.
The exemption of religious organizations from paying taxes are clear representations of a government respecting an establishment of religion.
In the United States, churches greatly outnumber schools and have an attendance count of over 56 Million weekly, generating billions in un-taxed profits making many the most wealthiest organizations in the world.
For every dollar a religious organization does not pay, you pay on its behalf even if you are not affiliated with any religion.
Un-Taxed Churches: Unconstitutional and need regulation.