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The 'assent' procedure gives the European parliament (EP) a power of veto over certain legislative proposals in the Community decision-making process. It was originally introduced by the Single european act. In outline, where the assent procedure applies, a proposal cannot be accepted unless supported by the EP in a majority vote. Currently, the assent procedure applies in the following provisions.

   * Accession of new member states (Art. 49 of the Treaty of maastricht)
   * Agreements with non-EU countries (Art. 300 of the ECTreaty)
   * Specific matters relating to the European Central Bank
   * Modifications to the election procedure of the EP
   * Imposition of sanctions for breaches of fundamental rights