CNBC's Jane Wells reports from the National Marijuana Business Conference in Washington State. Pot is already legal in a number of states for medical use and others for recreational, and is drawing ... more 
CNBC's Jane Wells reports from the National Marijuana Business Conference in Washington State. Pot is already legal in a number of states for medical use and others for recreational, and is drawing interest from big investors, she says. less 
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Thu, Nov 7, 2013 2:13 PM EST