The attached report represents the findings gathered by Caucus members and staff through hearings, briefings, interviews, and the review of documents from government and non-government subject matter experts. It builds largely on the topics raised during the Senate Caucus on International Narcotics Control Hearing on October 23, 2019, entitled “Marijuana and America’s Health: Questions and Issues for Policy Makers.” It outlines some of the most pressing research and public health issues related to cannabis and provides recommendations to address them.