I lived in the South most of my life, where growing, selling, or possessing cannabis was treated like opiates (in fact federal drug laws require judges during sentencing to use a table that converts amount of cannabis into equivalent amounts of heroin!) - I personally know people who have served jail time just for having a joint on a table when cops were called during a noise complaint because people were practicing their musical instruments. So it depends on the state you are in, but some of them don't overlook cannabis.