Remember, it wasn't until May, 2012 that obama suddenly announced he was for gay-marriage.
Most the GOP didn't give a rat's ass about it, starting in about 1990 or so. You wanna get married? Knock yourself out. Try getting a gay-divorce back then. You had to travel to Massachusetts... America was utterly reliant on Sweden and Israel for gay stats. It's not as if the American-left had any enlightened info about behavioral-anything.