It also could trigger a Constitutional Convention so that a Defense of Marriage Amendment can be considered that would leave the issue of Marriage to each State.
Most likely this would only enrage those who are opposed to same-sex marriage, leading to a huge movement to ban same-sex marriage with a Constitutional amendment. Most Americans do not believe in federalism, anymore. It's either same-sex marriage should be banned on a federal level, or should be legalized on a federal level. Ask anybody on the street what the Tenth Amendment is and they probably wouldn't know.
Such an amendment clarifying that same-sex marriage should be left to the states would be great. It will never happen, though. Not with all the hacks in Washington who think that their views are 100% the best for Murica, and should therefor be shoved down everyone's throats.
