Abstract

Political liberals hold that the exercise of state power is legitimate only if it can be publicly justified—justified on the basis of public reasons. Many find this requirement too demanding and propose instead that there are just pro tanto reasons for laws and policies to be publicly justified. Here I argue that this alternative proposal fails to recognize that there are also distinct pro tanto reasons to have institutional requirements that laws and policies are publicly justified. This suggests an intermediate position between political liberals and their critics, which holds that states have reasons to adopt the kinds of institutions that political liberals favor—institutions that require public justification—but whether they should do so will depend on the costs and benefits of those institutions. This allows for a more practical approach to public justification by focusing on its application in particular political contexts.