'This is a remarkable book. It is embedded firmly in the well-established 'new institutionalist' literature on comparative politics. And it extends a well-recognized debate over how (and how carefully) elected politicians delegate authority to unelected bureaucrats. Yet, for all its pedigree, it is original, innovative, and important. It is bold in its theoretical scope, impressive for its painstaking attention to empirical detail, and, for all that, a pleasure to read … This will be the most important book in delegation since Kiewiet and McCubbins's The Logic of Delegation a decade ago.' Japanese Journal of Political Science