Three groups make challenge to Proposition 8 , which bans same - sex marriage . Groups say ballot initiative ` ` improperly used '' to take away state constitutional right . Court says it will not interfere with enforcement of the law before it hears appeal . State Supreme Court ban same - sex marriage in February 15 ruling .
Three groups file challenge to Proposition 8 , which bans same-sex marriage . Groups say ballot initiative `` improperly used '' to strip away state constitutional right . Court says it will not interfere with enforcement of the law before it hears appeal . State Supreme Court legalized same-sex marriage in May 15 ruling .