Proponents of same-sex marriage contend that most of the state bills are almost certainly unconstitutional. And even in conservative-dominated statehouses, the chances of passage are unclear, given disagreements within the Republican Party on whether same-sex marriage should be a priority issue. Some experts say they could face sharp rebukes from judges who have ruled in favor of same-sex marriage.“I think they’ll be angry,” said Risa L. Goluboff, a law professor at the University of Virginia who studies American legal history. “I think they’ll see this ...