While schools, unions, the media, and everyone else can engage in politicking, churches know that the IRS is watching if they speak out. The IRS has even warned that praying in churches for a candidate may lose tax-exempt status.
Seems like the founding fathers were intent on protecting religion from government, not protecting government from religion. We've lost the spirit of liberty when the only sacred thing anymore is raw federal power.
And speaking of the loss of liberty, don't forget one of the gravest threats to true liberty is Homeland Security, which threatens to bring us into a police state, all in the name of security. Hints of the abuses to come are beginning to emerge. Take the story of the Homeland Security toy police.