Frontex at the epicentre of a rule of law crisis at the external borders of the EU

Next to the rule of law ‘crises’ within Member States, a new facet of this rule of law crisis is emerging at the external borders of the EU, and sees the EU border agency Frontex as its epicentre. This article illustrates the multiple facets of this crisis which concerns Frontex's functioning and activities, discussing a form of ‘agency capture’ that occurred under the mandate of the former Executive Director and a legal framework ensuring limited monitoring and transparency on operations. Subsequently, the article delves into the constitutional meaning of the rule of law for an agency such as Frontex, both for its significance on relations between authorities and individuals and for the interplay between the rule of law and accountability. The article concludes by calling for a rethinking of the accountability instruments in place, to constrain more effectively the exercise of discretion by agencies.