The debate unleashed by the essay "What is Marriage?" authored by NOM's founding chairman Princeton Prof. Robby George and two of his former students (Sherif Girgis and Ryan Anderson) in the Harvard Journal of Law and Public Policy, continues.

Here's Prof. George and colleague's second round of reply to Prof. Yoshino,

And hteir reply to Prof. Andrew Koppelman,

And their reply to  blogger Barry Deutsch.