(1) Existing law, the Cigarette and Tobacco Products Licensing Act of 2003, requires a retailer, as defined, to hold a license from the California Department of Tax and Fee Administration to engage in the sale of cigarettes or tobacco products. A violation of these provisions is a misdemeanor. This bill would expand those provisions to prohibit a retailer from selling nitrous oxide in any retail location, subject to certain exceptions. The bill would authorize a city or county or city and county to adopt an ordinance imposing greater restrictions on the retail sale of nitrous oxide provided the ordinance does not restrict legitimate uses, as specified. (2) By expanding the definition of an existing crime, this bill would impose a state-mandated local program. The California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state. Statutory provisions establish procedures for making that reimbursement. This bill would provide that no reimbursement is required by this act for a specified reason.