Liberal legitimacy and future citizens

If the legitimate exercise of political power requires justifiability to all citizens, as John Rawls's influential Liberal Principle of Legitimacy states, then what should we say about the legitimacy of institutions and actions that have a significant impact on the interests of future citizens? Surprisingly, this question has been neglected in the literature. This paper questions the assumption that it is only justifiability to presently existing citizens that matters, and provides reasons for thinking that legitimacy requires justifiability to future citizens as well. Further, it is argued that the presently dominant interpretation of Rawls's principle is unable to take future citizens into account in an adequate way. Therefore, the inclusion of these citizens among those to whom justifiability is owed gives us good reasons to reject this interpretation, and to adopt a different understanding of the view.