Could it be they don't want anyone looking into Libya, Al Qaeda and Hezbollah raising money in the West African diamond trade?
i could not disagree with you more. if we do legalize drugs, then more people will use drugs, and even if the price drops, the total money spent on drugs will increase.
the fact is that several terrorist organizations control land that grows some of the best drugs in the world (e.g. opium) and their peasant labor is cheap, dirt cheap. we could not begin to compete in the united states with these creeps if we did legalize drugs, both on price and on quality. the extra money spent in the now legal drug trafficking will provide even more funds to the terrorists.
besides being morally incorrect, your argument is also not economically sound.