National parliaments will be able to call a time-out if Brussels makes proposals that seem to interfere unnecessarily. Should one-third of national parliaments so wish, the European Commission will be required to reconsider a proposal.
宪法条约包含了确保欧盟严格执行这一原则的条款。如果布鲁塞尔制定任何不必要的参与计划，国家议会有权提出抗议。如果三分之一的国家议会这么做，欧盟委员会就会被要求重新考虑计划。