(2) Ke dni 1. května 1999, kdy vstoupila v platnost Amsterodamská smlouva, kterou bylo mimo jiné začleněno schengenské acquis do rámce Evropské unie, protokol dosud nevstoupil v platnost.
(2) On 1 May 1999, the date of entry into force of the Treaty of Amsterdam, which provided, inter alia, for the integration of the Schengen acquis into the framework of the European Union, the Protocol had not entered into force.