Citigroup received government bailout funds during the sub-prime mortgage crisis. The document outlines Citigroup's history from its origins as City Bank of New York through its expansion and merger with Traveler's Insurance. It then discusses how the sub-prime crisis impacted Citigroup, leading the government to provide funds through TARP and CAP programs along with accountability measures, with the future of Citigroup involving leadership changes, potential nationalization, and restructuring.