Since the U.S. Supreme Court did such a poor job of chronicling the history of DEA marijuana rescheduling efforts in Gonzales v. Raich, 545 U.S. 1, 15 n.23 (2005), I have posted the relevant cases at: http://www.iowamedicalmarijuana.org/documents/young.aspx
Starting in 1972, the National Organization for the Reform of Marijuana Laws (NORML) began its campaign to reclassify marijuana. Grinspoon & Bakalar 13-17. After some fleeting success in 1988 when an Administrative Law Judge (ALJ) declared that the DEA would be acting in an "unreasonable, arbitrary, and capricious" manner if it continued to deny marijuana access to seriously ill patients, and concluded that it should be reclassified as a Schedule III substance, Grinspoon v. DEA, 828 F.2d 881, 883-884 (CA1 1987), the campaign has proved unsuccessful. The DEA Administrator did not endorse the ALJ's findings, 54 Fed. Reg. 53767 (1989), and since that time has routinely denied petitions to reschedule the drug, most recently in 2001. 66 Fed. Reg. 20038 (2001). The Court of Appeals for the District of Columbia Circuit has reviewed the petition to reschedule marijuana on five separate occasions over the course of 30 years, ultimately upholding the Administrator's final order. See Alliance for Cannabis Therapeutics v. DEA, 304 U.S. App. D.C. 400, 15 F.3d 1131, 1133 (1994).
It is extremely interesting to note that the Supreme Court recognized that marijuana was in the wrong schedule of the Controlled Substances Act and none of the parties to the case picked up on it. Gonzales v. Raich, 545 U.S. 1, 28 n.37 (2005):
We acknowledge that evidence proffered by respondents in this case regarding the effective medical uses for marijuana, if found credible after trial, would cast serious doubt on the accuracy of the findings that require marijuana to be listed in Schedule I. See, e.g., Institute of Medicine, Marijuana and Medicine: Assessing the Science Base 179 (J. Joy, S. Watson, & J. Benson eds. 1999) (recognizing that "[s]cientific data indicate the potential therapeutic value of cannabinoid drugs, primarily THC [Tetrahydrocannabinol] for pain relief, control of nausea and vomiting, and appetite stimulation"); see also Conant v. Walters, 309 F.3d 629, 640-643 (CA9 2002) (Kozinski, J., concurring) (chronicling medical studies recognizing valid medical uses for marijuana and its derivatives). But the possibility that the drug may be reclassified in the future has no relevance to the question whether Congress now has the power to regulate its production and distribution. Respondents' submission, if accepted, would place all homegrown medical substances beyond the reach of Congress' regulatory jurisdiction.