That particular teaching didn’t catch on with Mitt. He invented gay marriage out of wholecloth in Massachusetts.
Nah, that was the doing of the Chief Justice of the MA Supreme Judicial Court, her husband, Anthony Lewis of the NY TIMES, and their group of political friends. They saw an opportunity and took it. Mitt just didn't fight it. Don't know if he didn't think he could, or what, but the Supreme Judicial Court ruled and that was that.