Are these AGs arguing that not only is marriage a 10th Amendment-protected state power issue, but that the states have never amended the Constitution to expressly protect so-called LGBT issues? The states are therefore free to make laws which prohibit constitutionally unprotected gay marriage as long as such laws don’t unreasonably abridge constitutionally enumerated protections.
I believe that’s about right. Basically saying that the feds have no right to decide something that was reserved to the states.