While a handful of states have moved to restrict so-called conversion therapy, California lawmakers are poised to ban the sale or advertisement of the controversial practice in an effort to crack down on its use. The California State Assembly passed a bill earlier this week that classifies conversion therapy as a fraudulent business practice and make it illegal for anyone to claim they can change a person's sexual orientation or gender identity through the practice. If passed by the state Senate, the bill would make California the first state to effectively ban conversion therapy from being performed on minors and adults.