When 52 percent of California voters passed Proposition 8 in November 2008, Attorney General Jerry Brown said he would defend the measure during the inevitable appeals. Then, as is his fashion, Brown changed his mind. Ditto Gov. Arnold Schwarzenegger, who twice vetoed same-sex marriage bills passed by the Legislature in deference to California voters who passed an earlier same-sex marriage statute in 2000. But after Prop. 8 passed, both refused to defend the measure. This month, after U.S. District Judge Vaughn Walker ruled that Prop. 8 is unconstitutional, both Brown and Schwarzenegger urged Walker to lift a stay on his...