California’s drug cartel crisis fueling national fentanyl epidemic

California has become a shipping hub for cartels to set up shop and distribute drugs. Some believe it's because of weak drug laws in the state coupled with the access to major highway systems and the proximity of the border.

Inside a small warehouse that reeks of marijuana just outside the capital city in California, the reality Sacramento County residents are faced with is exposed. The floors in one room are covered with thousands of pounds of illegally grown marijuana. Hundreds of guns, some semi-automatic that were used for murder, hang from steel bars that line an entire room, waiting to be destroyed. In another garage-style warehouse room, there are thousands of boxes filled with paperwork and evidence gathered at crime scenes. 

"You don't know the whole dark side of things," an undercover major narcotics detective who works in California told Fox News. "What’s presented into their view is only a fraction of what’s going on."