Federal Law

In a weird twist, Federal prosecutors are telling some  California pot dispensaries to shut down even though it is legal in that state.  Since Federal law trumps state law, these businesses are in trouble.  I am not sure what the Obama administration is doing? I really thought they were leaning towards legalizing weed.  I guess not.  So now what happens to the doctors who are making a living prescribing it?  They better start thinking about a more honest way of raking in the cash.  Maybe, crystal meth or black tar heroin?