George W. Bush was instrumental in opening up the money channel to religious institutions, although the defined Church and State aspect of the US Constitution is pretty clear. With that in mind, those religions that enjoy the financial blessings of their affiliation with the government, and that would be all of them, should be required to uphold certain standards for civil and human rights.
If the Bible says that being "gay" is wrong and "gays" are not welcome at that church, fine. If you believe the Bible then that is your perogative to listen and accept. The church is simply repeating what their "good book" says, most who attend would probably take exception with it anyway. If the Bible says that being "gay" is wrong and the church condemns the "gays" with hate speech and a call to arms against the "gays" then that church is far from 1) Christian and 2) an entity deserving of ANY tax exempt consideration or governmental financial support....