Why should government intervene in the economy? The fundamental economic justification is that markets occasionally fail. The government can intervene in those markets in ways to make them work better and make us—the whole of society—better off. This is the ideal that has helped motivate U.S. regulatory policy from the Reagan Administration through the Obama Administration. So, how can we promote a regulatory program that makes the lives of the American people better? Simply the existence of market failures is not sufficient to justify government intervention. The prospect of government failure can result in outcomes where the government does not deliver on this ideal. Real-world context makes clear the importance of evaluating the perform...