Geoffrey Sigalet is a post-doctoral fellow in the Faculty of Law at Queen's University and a non-resident fellow at the Stanford Constitutional Law Center, Stanford University, California. He completed his Ph.D. in political theory and public law at Princeton University, where his dissertation developed a neo-republican political theory of 'dialogical' judicial review and constitutional interpretation. Grégoire Webber holds the Canada Research Chair in Public Law and Philosophy of Law at Queen's University, Ontario and is a Visiting Senior Fellow at the London School of Economics and Political Science. He is the author of The Negotiable Constitution: On the Limitation of Rights (Cambridge, 2009), joint editor of Proportionality and the Rule of Law: Rights, Justification, Reasoning (Cambridge, 2014), and joint author of Legislated Rights: Securing Human Rights through Legislation (Cambridge, 2018). Rosalind Dixon is a Professor of Law, at University of New South Wales, Sydney, and Co-President of the International Society of Public Law. Her work has been published in leading journals in the US, Canada, the UK, and Australia. She was previously an assistant professor at the University of Chicago Law School, and has been a visiting professor at the University of Chicago, Columbia Law School, Harvard Law School, and the National University of Singapore.