New regulations are emerging to govern the advertising of marijuana as more states legalize its use and distribution. Currently, 26 states have legalized marijuana either medically or recreationally, though it remains illegal under federal law. As the marijuana industry grows, guidelines around advertising are still developing as they have for other substances like alcohol and tobacco. Recent legislation and case law have aimed to clarify what types of marijuana advertising are allowed under state laws legalizing its use, though federal restrictions still apply if advertising crosses state lines.