Caption
Dr. Alex Karp. (Wall Street Journal photo)
Drug Policy
Drug Policy
Caption
A young woman next to a satirical portrait of U.S. President Barack Obama while marching in support of the legalization of marijuana on August 7, 2010 in Berlin, Germany.(Sean Gallup/Getty Images)
Caption
Dave Warden, a bud tender at Private Organic Therapy (P.O.T.), displays various types of marijuana available to patients on October 19, 2009 in Los Angeles, California. (David McNew/Getty Images)
Commentary
Experts
David W. Murray
Senior Fellow
John P. Walters
President and CEO
