Hagar asks in the comments to "Jonathan Rauch doubles down on the supply-of-women argument for why polygamy is not like same-sex marriage." Briefly, the supply-of-women argument says that government may exclude polygamists from the fundamental freedom to marry because if some men marry more than one woman, there will be fewer women available to pair up with unmarried men thereby cure them of their dangerous destructiveness.
Hagar is suggesting that polyandry could solve the problem. Everyone's picturing polygyny, which Jonathan Rauch called "almost invariably the real-world pattern." Rauch also points to a map, showing the prevalence of polygamy in countries that where women are not equal. But, as I say in the earlier post, this is America, and the question is what will happen going forward. The supply-of-women argument asks us to worry about what will happen going forward.
So Hagar's question is apt. Why must we deny women the right to choose to be one of multiple wives in a polygynous marriage if the same interest — marrying up the unmarried men — could be served by empowering, encouraging, and even subsidizing — rampant polyandry? That ought to vacuum up the excess men that are screwing up the world (according to the supply-of-women argument!).