Of the three marijuana legalization initiatives on the ballot this year, Kleiman thinks Washington State's initiative has the best chance of passing. If it does, he expects the Feds won't respect the state's decision:
The drug warriors who still dominate federal drug policy, especially at ONDCP and DEA will start to figure out how to make it impossible for Washington State to implement the new law.
He also suspects that legalization proponents will over-interpet the law:
[P]roponents will announce that the Millenium has arrived, and that it’s now time to legalize pot nationally and move on to legalize all other drugs. They will then, as the new law is implemented, announce that all of the results are good, nothing is wrong, and all that needs to be modified are the limits the new law puts on production and driving under the influence.
In response, Humphreys considers the role of the Cannabis Lobby:
Legalization would create a new player in pot politics, namely whoever sells legal pot. As we have seen with the drugs we have already legalized (e.g., alcohol) a legal industry in psychoactive substances will make a great deal of money and use it to keep regulatory structures weak.