President Obama is going to toe-to-toe with the country's largest medical marijuana dispensary.

If the administration gets its way the pot shop in Oakland may be shut down for good.

Filmmaker Morgan Spurlock went to work at the facility for his new program "Inside Man" which debuts this Sunday right here on CNN.

OutFront tonight: Morgan Spurlock, who is said to have gotten a Ph.D in Weed - for his stint at the marijuana facility .