Photos / Puff, Puff … Pass!

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SAN FRANCISCO - APRIL 24: A customer at the Alternative Herbal Health Services cannabis dispensary holds a marijuana cigarette April 24, 2006 in San Francisco, California. The Food and Drug Administration issued a statement last week rejecting the use of medical marijuana declaring that there is no scientific evidence supporting use of the drug for medical treatment. (Photo by Justin Sullivan/Getty Images)

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