Gatesheader and gavra:
To be consistent and avoid hypocricy, you surely support legal polygamous marriage which is far far less problematic (to put it mildly) than homosexual marriage. Fundamentalist Mormon’s practice it, and you surely do not want to interfere with their religious practices, as you’ve put it. And Sefardic Jews also can do it (they only don’t because it violates secular law; but once it’s legalized they can marry as such.)