Social media sites have increasingly become a primary source of news for Americans but there remain concerns about the quality of information from social media sites. In this report, Kelly Born explores the problem of disinformation, its origins, and the characteristics that make it distinctive from past propaganda challenges. Born also examines the potential impact and feasibility of the many proposed solutions, including efforts to improve the quality of journalism, improve audience resilience to disinformation, or change social media company practices by improved content moderation, enhanced user controls, changes to privacy or liability law, antitrust enforcement, and more.