The First District Court of Appeal concluded 2-1 that California’s ban on same-sex marriage is constitutional, analyzing it under a rational-basis test.

The opinion ( .pdf), written by Justice William McGuiness with Justice Joanne Parrilli concurring, represents a victory for lawyers defending a one-man, one-woman definition, and overturned a lower court ruling that had previously concluded that the ban on same-sex marriage violated the state Constitution. Justice J. Anthony Kline dissented from Thursday’s decision.