The Treaty of Lisbon introduces an early warning mechanism (EWM) which empowers national parliaments to intervene directly at the EU-level; they may now raise objections to – and even play a role in blocking – EU legislation. The EWM represents a new model of parliamentary involvement in...

The Treaty of Lisbon introduces an early warning mechanism (EWM) which empowers national parliaments to intervene collectively at the EU-level; they may now raise objections to – and even help to block – EU legislative proposals. The EWM represents a new model of parliamentary involvement in...