Thirty states have laws legalizing marijuana in some form, and come November four more states may join their ranks through ballot initiatives. But these new laws often do little to help people who have past marijuana convictions. Professor Douglas Berman describes this disconnect and what states and the federal government can do to address it. For more on this topic: Read Berman’s SSN Brief, How States Can Ensure That Today’s Marijuana Reforms Also Ameliorate Harms Inflicted on Past Offenders Check out his essay on the topic, Leveraging Marijuana Reform to Enhance Expungement Practices