What makes an issue deserve a Constitutional amendment? (Gay marriage and more)

[Metacom]

*Originally posted by John Mace *
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2. States may want to disallow gay marriage, but they may not want it done at the federal level. As long as they don’t have to recognize gay marriage from another state, they don’t need the additional oomph of a federal constitutional amendment. **

I’m definately with Freyr here: I have a hard time picturing the voters in those states, and their elected representatives, ceding an issue as controversial has gay marriage to abstract Anti-Federalist arguments.