In April 2010, the SEC brought fraud charges against Goldman Sachs for its structuring and marketing of Abacus 2007-AC1, a complex mortgage-related security. Less than two years after the onset of the great financial crisis, and in the midst of political posturing to shape agendas for the financial reform, the case discusses the market reaction to the lawsuit and the dilemma facing Lloyd Blankfein, Goldman's CEO. The deal structure is analyzed in detail within the context of the market for mortgage-backed securities. The case can be used in a course on financial market regulation or in a course on financial markets and institutions. Instructors may also assign a technical note "The Financial Regulatory Environment" (UVA-GEM-0103) to give students more background on the U.S. regulatory environment.