Do you realize how hard it is to jail a non-violent criminal? Especially in the State of California full of Pot Scolaws with the California legislators opting out of co-operation. It simply makes violating pot laws a Federal beef.
If the Feds want to make California pot clerks into a Federal crime, let the Feds provide the Prison space, let the Federal courts be responsible for trying those miscreants, and as far as Feds are concerned, if the feds want to the California local courts take the problems off their hands, the California courts, if nothing else, can simply issue an unlimited set of continuances and bail on their own recognizances, to effectively make the problems go away. In short there is not enough money in the world for the Feds to all by their selves enforce pot laws in the State of California.
Meanwhile back at the California ranch, its will be the best news real dangerous California criminals have heard, because as all Federal enforcement money is all diverted only enforcing pot laws, there will be no money left to investigate, try, or arrest more dangerous violators of other crimes.
In somewhat a tale out of school, I got a good view as a repeat student loan violator finally got caught dead to rights by the Feds. But the Feds had to wait two years to arrest her and take her off the street, because they did not have enough prison space to feed and house her post conviction. One day that reservation finally came, but that did not stop her from costing some $500,000 to the tax payers on her other frauds in the interim.