The document discusses the causes of the financial crisis and solutions to prevent future crises. It argues that the financial system is too important to leave unregulated and that mistakes were made during the crisis that went unpunished. It identifies three main challenges regulators face: 1) increasing capital requirements for financial institutions, 2) increasing regulation and transparency of credit derivative markets, and 3) regulating credit rating agencies to address conflicts of interest. Nationalizing credit rating agencies and increasing clearinghouse requirements are proposed as solutions.