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The election of George W. Bush as U.S. president in 2000, as measured by the Iowa Electronic Market (IEM), was associated with an increase of 3% in the share price of firms that were being sued by the Environmental Protection Agency (EPA). This is equal to approximately $100 billion of shareholder value. This finding is robust to a number of different specifications, controlling for other litigation, case law, and industry, and is not found in an otherwise similar sample of companies without litigation outstanding. It is suggested that the enforcement of environmental law is dependent on political pressure. (JEL G18, K32, G14)