. . . even in places like California, where state law permits the use of medical marijuana with a doctor's prescription, it is still illegal under federal law to possess or distribute marijuana. It is a Schedule IV narcotic under the Controlled Substances Act and the DEA continues to enforce this law;
As of December 1, 2008, the U.S. Supreme Court ruled that state's medical marijuana laws are not preempted by federal law.
If the DEA wants to continue raiding dispensaries/co-ops, and destroying the lives of medical marijuana patients in states where medical marijuana is legal, they're going to have to do it without the assistance of the local law enforcement community. My guess is they're not going to want to do that, from my viewing of YouTube videos of prior DEA dispensary busts. I would think with this recent ruling, the local law enforcement personnel may be called on the fact that they should be busting the DEA for violating state law.