Mexican drug lord El Chapo's trial of the century is set to start in April 2018. We take a look back at the Mexican cartel's role in America's black market marijuana industry. Greg Zeman, Associate Editor at Cannabis Now, explains how the smuggling of marijuana has subsided in America over the past 10 years and what states need to do in order to keep regulation of marijuana in check. Plus, will marijuana be center stage in the 2020 presidential election? Zeman believes it will be a hot topic and he explains why.