If signed, the law would make california the first state to threaten punishment for doctors who spread what the state deems inaccurate information on vaccines and covet prevention. Under the measure, the medical board of california would have the power to suspend or even revoke the license of any doctor they deem guilty of spreading such disinformation. The American Medical Association has been calling for legislation like this for a while now. They say that laws like this will save lives. But there are plenty of doctors who fear the law could have a chilling effect on free speech and scientific debate.