The paper will scope out the idea of 'constitutional citizenship', highlighting the extent to which it relies on or challenges concepts of dis/trust. Articulating a concept of constitutional citizenship is not a mere descriptive enterprise, but involves ethical choices about matters of inclusion and exclusion. In that context, highlighting the distributional, social and political effects of citizenship attribution is an important part of the task. States frequently laud the idea of citizenship in theory, but undermine its practice in reality. This paper will probe the space between these two ideas, and show that citizenship remains central to understanding modern constitutional set-ups.