Fusion GPS is a research and investigative firm based in Washington, D.C. Founded in 2011, it specializes in providing intelligence and analysis for various clients, including corporations, law firms, and political organizations. The firm gained significant attention for its role in producing the Steele dossier, which contained allegations about Donald Trump and his connections to Russia during the 2016 presidential election. The firm employs a range of methods, including public records research and interviews, to gather information. Fusion GPS has worked on various high-profile projects, often focusing on political and legal matters, and has been involved in controversies related to its findings and clients.