Legalizing drugs… for medical use, of course.
R. J. David Bleich, Judaism and Healing: Halakhic Perspectives (2002 edition) pp. 178-179:
[E]verything possible should be done to alleviate the patient’s suffering. This includes aggressive treatment of pain even to a degree which at present is not common in medical practice. Physicians are reluctant to use morphine in high dosages because of the danger of depression of the cerebral center responsible for respiration. The effect of such medications is that the patient cannot control the muscles necessary for breathing. However, as has been discussed in the preceding chapter, there is no halakhic objection to providing such medication in order to control pain in the case of terminal patients and maintaining such patients on a respirator. Similarly, there is no halakhic objection to the use of heroin in the control of pain in terminal patients. The danger of addiction under such circumstances is, of course, hardly a significant consideration. At present, the use of heroin is illegal even for medical purposes. Judaism firmly believes that everything in creation is designed for a purpose. Alleviation of otherwise intractable pain is a known beneficial use of heroin. Marijuana is effective in alleviating nausea which is a side-effect of some forms of chemotherapy. There is every reason to believe that these drugs were given to man for the specific purpose of controlling pain and discomfort. Jewish teaching would enthusiastically endorse legislation legalizing the use–with adequate accompanying safeguards–of these substances in the treatment of terminal patients.
(Reposted from here)