Your response to the petitions regarding marijuana legalization was written by Gil Kerlikowske, who, as the Director of the Office of National Drug Control Policy (ONDCP), is legally required by the Office of National Drug Control Policy Reauthorization Act of 1998 to oppose legalization of marijuana and other illegal drugs, regardless of the facts relating to their use and effects.
(See sec. 704 of the act: Among the duties of ONDCP directors is to "take such actions as necessary to oppose any attempt to legalize the use of a substance (in any form) that -- (A) is listed in schedule I of section 202 of the Controlled Substances Act (21 U.S.C. 812); and (B) has not been approved for use for medical purposes by the Food and Drug Administration")
This is clearly a conflict of interest.