"Federal Drug Policy: Time to Shift Priorities," July 7, 2009 [Capitol Hill Briefing]
"The Politics and Science of Medical Marijuana," March 17, 2009 [Policy Forum]
"Free to Booze: The 75th Anniversary of the Repeal of Prohibition," December 5, 2008 [Policy Forum]
"Should No-Knock Police Raids be Rare-or Routine?," September 11, 2008 [Policy Forum]
"Nudge: Improving Decisions about Health, Wealth, and Happiness," May 1, 2008 [Book Forum]
"Gay Marriage: Evidence from Europe?," June 1, 2006 [Policy Forum]
"Drug Cops and Doctors: Is the DEA Hampering the Treatment of Chronic Pain?," September 9, 2005 [Conference]
"Deployed in the U.S.A.," February 18, 2004 [Policy Forum]
"Bad Neighbor Policy: Washington's Futile War on Drugs in Latin America," July 18, 2003 [Capitol Hill Briefing]
"Saying Yes: In Defense of Drug Use," May 29, 2003 [Book Forum]
"Drug War Addiction," March 13, 2002 [Book Forum]
"Time to Rethink the War on Drugs?," May 22, 2001 [Policy Forum]
"The Law and Politics of Medical Marijuana ," March 27, 2001 [Policy Forum]
"Plan Colombia: Should We Escalate the War on Drugs?," March 13, 2001 [Policy Forum]
"Beyond Prohibition: An Adult Approach to Drug Policies in the 21st Century," October 5, 1999 [Conference]