DEA chief Chuck Rosenberg on Wednesday rejected the notion that smoking marijuana is "medicine," calling the premise a "joke."

 "What really bothers me is the notion that marijuana is also medicinal -- because it's not," Rosenberg said in a briefing to reporters. "We can have an intellectually honest debate about whether we should legalize something that is bad and dangerous, but don't call it medicine -- that is a joke."

As more and more states experiment with loosening marijuana laws, Rosenberg said that people shouldn't conflate the issue of legalizing recreational marijuana with medicinal marijuana.

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Paula Reid and Stephanie Condon ~ CBS News ~