If the endorsed religion thinks that something is a "sin," soon enough, we find that the religious supporters in government start trying to sneak in a law against it.
In most places this is already illegal. What irritates me is to see a constitution being abused by silly amendments. For us in Florida, the most recent fun article that was tacked on to the state constitution was that the local government must make plans and erect a high speed rail system linking Miami, Tampa, and Orlando. I tend to view the federal position in similar terms -- what business does the government have attempting to define a family unit through an amendment to the constitution? This is not the government's job and not what the constitution was intended to define.
"Neither this Constitution or the constitution of any state, nor state or federal law, shall be construed to require that marital status or the legal incidents thereof be conferred upon unmarried couples or groups."
Say goodbye to domestic partner benefits if your area has them.
But this isn't an assault on homosexuals. Of course not! This is the "strengthening of the family and the father figure", something we all need.
The removal of gay rights from the federal website is just a coincidence.