Via Pam's House Blend...  Ronald J. Rychlak over at Catholic Online makes clear what the danger is in banning discrimination against homosexuals...

If homosexual marriages or civil unions are the equivalent of traditional marriages, you can't discriminate. If you do, at the very least you put your government benefits at risk.

This is the same rationale that was used by the Supreme Court in 1983 to uphold stripping Bob Jones University of its tax-exempt status due to its racial policies. 

That it was.  Gosh it's so uncanny how racists and homophobes look so much alike isn't it?  You'd almost think they were cut from the same cloth or something...

And in the end, it all comes down to money, not theology.  What motivated the Pat Robertsons and Jerry Falwells and James Dobsons of America to pour their poison into American politics for the past several decades wasn't abortion, and it wasn't gay rights, and it wasn't even racism, it was loosing their tax-exemptions.