One small note. Above, Romney says that we should not discard 3,000 years of history of one-man-one-woman marriage. Ahem. His own family were ardent polygamists only a century ago - and went to Mexican colonies to escape US federal oppression of their version of marriage (which also goes back a long, long way and still exists across the world). Romney's great-grandparents were polygamists; one of his his great-great-grandfathers had twelve wives and was murdered by the husband of the twelfth.