National Parliaments in the European Union. Collective Action under the Early Warning Mechanism
The 2009 Lisbon Treaty introduced the Early Warning Mechanism into the EU decision-making process. Under this mechanism, National Parliaments monitor the compliance of EU legislative proposals with the principle of subsidiarity by issuing yellow cards in cases of violation. It is argued that in doing so, they meet a collective action problem in form of an assurance problem, hence will only ineffec