San Francisco city attorney's Therese Stewart (L) and Dennis Herrera talk to the media following a California Supreme Court hearing on gay marriage in San Francisco, California March 4, 2008. Four years after San Francisco ignited passionate embraces and heated national debate by briefly allowing gay marriage, California's top court hears arguments on Tuesday as to whether matrimony should be limited to a man and a woman. REUTERS/Robert Galbraith (UNITED STATES)