And national parliaments are charged with the duty of ensuring compliance with the principle of subsidiarity.
However Conservative MEP Struan Stevenson said he would oppose it if went against EU traditions of subsidiarity and competition.
Yet such proposals, including ways of clarifying or strengthening subsidiarity, may mean yet another revision of the Union's treaties.
EU's much-flouted principle of subsidiarity (acting at the lowest level of government).
And he said the regulations ran counter to the principle of subsidiarity which requires decisions to be made at a national level if possible.
Making national parliaments guardians of subsidiarity was an important British proposal.
Politicians opposed to the expansion of state power, who take seriously the principle of subsidiarity as a check on cartelised government, are to be found across Europe.
This provision is also inconsistent with the principle of subsidiarity.
Yet although subsidiarity, coined at a summit in 1992 and woven into the Amsterdam treaty last year, was a buzzword in Cardiff, Europeans still disagree about what it means.
It is only the second time the House of Lords has used a new power granted under the Lisbon Treaty, which allows objections from parliaments on the grounds of "subsidiarity".
One of "subsidiarity", namely that decisions should be taken at the lowest levels possible, and the "margin of appreciation", namely that national governments should have greater leeway in applying the judgements of the court.
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By origin, his Union partners are Christian Democrats, keen on a decentralised set-up for Spain not because they want to wave the Catalan flag but because they believe in subsidiarity, decision-making at the lowest appropriate level.
Speaking on the Today programme, Michael Meister, the deputy parliamentary chairman of Mrs Merkel's governing CDU party argued that we need "more Europe" and that the keys to this are responsibility, subsidiarity, plus solidarity in the eurozone.
One of Labour's first acts was to opt in to the social chapter of the Maastricht treaty, a measure which cannot be reconciled with the idea of subsidiarity, or for that matter (given Europe's unemployment) with common sense.
The motion being debated in the Commons on 8 November 2011 said the EU proposals do not comply with the principle of "subsidiarity", the idea that policy should be decided by national parliaments and not EU institutions wherever possible.
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