A Brookings Institution Press and Governance Institute publication Paul C. Light examines and evaluates the 100 most significant investigations of policy failures, bureaucratic mistakes, and personal misconduct undertaken by the U.S. federal government between 1945 and 2012. Launched by Congress or the president, sometimes by both at the same time, the investigations at the core of this book were driven by the search for answers about significant breakdowns in government performance. Light reveals which investigations were most effective, and why.