Steve Fox is one of the leading figures in the movement to create a legal, regulated marijuana market in the United States. He is cofounder of the National Cannabis Industry Association and remains a strategic advisor to the organization, which represents more than 1,200 state-legal businesses. While at the Marijuana Policy Project (MPP) from 2002-2005 and 2009-2013, Steve lobbied Congress and guided numerous ballot initiative campaigns, including the Amendment 64 campaign in Colorado. He also guided a lobbying team through the Amendment 64 implementation process.

In 2005, Steve conceptualized and co-founded Safer Alternative for Enjoyable Recreation (SAFER) in Colorado with the express purpose to educate the public about the fact that marijuana is less harmful than alcohol and change voters' mindset. He is also co-author of "Marijuana is Safer: So Why Are We Driving People to Drink?", which is based on the strategy proven successful in Colorado.