Legal Opinion on the Proposed Inter-Institutional Agreement for a Mandatory Transparency Register in the European Union

This paper discusses the legal implications deriving from the choice of an interinstitutional agreement to regulate interest representation activities in the European Union. In particular, it focuses on whether this instrument may validly allow the European Parliament to impose a set of requirements on its Members (in relation to their free and independent mandate), the political groups, the intergroups and other informal groupings of Members, and on the accredited parliamentary assistants (APAs). It concludes that, given its legal status, the proposed IIA operationalises rather than extending the existing transparency obligations stemming from the Treaty and its requirements are proportionate to the aims pursued. As such it does not affect the free and independent mandate of Members as it is defined in the Members’ Statute nor it conflicts with the prerogatives of other internal actors. The proposed IIA intends to develop and complement obligations of primary law, such as the duty of openness and transparency that already govern the Statute and its interpretation, without compromising the substantive rights and obligations provided by the former. These obligations of primary law already put limits on the freedom and the independence of the Members enshrined in Article 2 (1) of the Statute as well as that of other internal actors. Additionally, the proposed mandatory Transparency Register also allows Members to easily identify the identity of interest representatives they meet, thus enhancing the Member’s ability to inform themselves.