76As regards the legal source of those immunities, Article 343 TFEU provides that the European Union is to enjoy in the territories of the Member States such privileges and immunities as are necessary for the performance of its tasks, under the conditions laid down in the Protocol on the privileges and immunities of the European Union. Although that article therefore refers to that protocol as regards the determination of the conditions under which immunities are to be ensured, it nevertheless requires that the European Union and, in particular, the Members of its institutions, enjoy the immunities necessary for the performance of its tasks. It follows that those conditions, as determined by that protocol and – in so far as that protocol refers to the law of the Member States – by national legislation, must ensure that the European Parliament is fully able to perform the tasks entrusted to it.
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