Recently, US Attorney General James Cole issued a memo stating:

"Persons who are in the business of cultivating, selling or distributing marijuana, and those who knowingly facilitate such activities, are in violation of the Controlled Substances Act, regardless of state law.  Consistent with resource constraints and the discretion you may exercise in your district, such persons are subject to federal enforcement action, including potential prosecution. State laws or local ordinances are not a defense to civil or criminal enforcement of federal law with respect to such conduct, including enforcement of the CSA. Those who engage in transactions involving the proceeds of such activity may also be in violation of federal money laundering statutes and other federal financial laws."

Basically, the government doesn't like these medical marijuana dispensary owners becoming millionaires.  I think instead of going backwards with the law, they need additional workers to regulate the financial dealings of dispensary owners.  This would help the economy in two ways: more jobs and more tax money.  Did the government really think they could legalize marijuana and people wouldn't want to buy it? 

We vote to toke: Vote To Toke