On Wednesday, the Justice Department issued a shot across the bow to states wrestling with how to regulate the growing and distribution of medical marijuana.
The Netherlands, famous for its liberal soft drugs policies, said on Friday it may label some highly concentrated forms of cannabis as a hard drug on a par with cocaine or heroin, because of the risk of addiction.
Despite this the Dutch Supreme court cites the National Opium Act which may block even locals from patronizing the Netherlands' numerous quasi-legal coffee shops.
The Netherlands, long famous for its liberal soft drugs policies, moved closer to introducing "weed passes" to curb sales of cannabis to foreign tourists, following a court ruling Wednesday.