Subsidiarity control in national Parliaments

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The Constitutional Treaty�establishes that national Parliaments shall ensure that EU-legislation complies with the principle of subsidiarity. A new so-called "Early warning system" is proposed to allow a national Parliament or a chamber of a�Parliament to contest a legislative proposal�with regard to its compliance with the subsidiarity principle. The system empowers national Parliaments to demand that the Commission reviews a proposal if at least 1/3 of the Parliaments submit a reasoned opinion to the Commission within six weeks after�the proposal's�transmission.
Most national Parliaments have not yet formally decided how to organise their internal procedures to monitor the principle of subsidiarity, but the table below gives some indications of the models presently foreseen by each national Parliament.
To the extent documents concerning the models of individual national Parliaments have been made available they can be found under the heading: "Country specific information".

• Country specific information
• Table on foreseen models for the Early warning mechanism in national Parliaments
• Pilot project on the examination of the 3rd railway package