The DEA clearly is bending over backward to keep marijuana on Schedule I, and nothing in the CSA requires it to do that.
Well, duh. The DEA is a government agency created to enforce laws against illegal drugs. Removing some drugs from the illegal list would reduce the size and scope of its duties. No federal agency, if given a choice, is going to commit this sort of partial suicide. Government agencies are supposed to be immortal – didn’t you know?
Expecting a government agency to threaten its own Iron Rice Bowl is the height of insanity. It just won’t happen, and Obama knows it.