Speaking of HHS (from NYT):

Marijuana is neither as risky nor as prone to abuse as other tightly controlled substances and has potential medical benefits, and therefore should be removed from the nation’s most restrictive category of drugs, federal scientists have concluded.

The recommendations are contained in a 250-page scientific review provided to Matthew Zorn, a Texas lawyer who sued Health and Human Services officials for its release and published it online on Friday night. An H.H.S. official confirmed the authenticity of the document.

But sadly

Last month, Michael D. Miller, a Justice Department official, defended the D.E.A.’s prerogative in making the final decision on the administration’s position.

“D.E.A. has the final authority to schedule, reschedule, or deschedule a drug under the Controlled Substances Act, after considering the relevant statutory and regulatory criteria and H.H.S.’s scientific and medical evaluation,” he wrote in a letter to Representative Earl Blumenauer, an Oregon Democrat who has pushed the D.E.A. to reconsider marijuana.

I see no motivation for the DEA to voluntarily forfeit power and money just because it's the right thing to do. Also think of career DEA guys' pride and ego. They are not going to easily admit they've been wrong and that their rhetoric has been overheated for the past 50 years.