Now that the Schengen Agreement is part of the Community acquis, it has lost to the EU Member States the status of a treaty which could only be amended in accordance with its terms. Instead, changes are made in accordance with the EU`s legislative procedure under the EU treaties.  Ratification by the former signatory states is not necessary to amend or repeal all or part of the previous Schengen acquis.  Acts setting out the conditions for accession to the Schengen area are now adopted by a majority of the EU`s legislative bodies. The new EU Member States do not sign the Schengen Agreement as such, but are required to implement the Schengen rules within the framework of existing EU legislation, which any new entrant must accept. [Citation required] Five years later, the concrete implementation of the agreement began. On 19 June 1990, the same countries met to sign an agreement on the implementation of the Schengen Agreement, which was covered at the time: this situation means that schengen Member States that were not part of the EU have few formally binding options to influence the development and development of the Schengen rules; their options are effectively reduced to approval or exit from the agreement. However, consultations are being held with the countries concerned prior to the adoption of certain new provisions.  In December 1996, two non-EU states, Norway and Iceland, signed an association agreement with the countries that signed the Schengen accession agreement. Although this agreement never entered into force, the two countries were part of the Schengen area following similar agreements with the EU.  The Schengen Agreement itself was not signed by non-EU states.
 In 2009, Switzerland officially concluded its accession to the Schengen area by adopting an association agreement by referendum in 2005.  Disagreement between the Member States led to a deadlock in the abolition of border controls within the Community, but in 1985, five of the ten Member States at the time – Belgium, France, Luxembourg, the Netherlands and West Germany – signed an agreement on the phasing out of border controls. The agreement was signed on the princess Marie-Astrid boat in Moselle, near the city of Schengen, where the territories of France, Germany and Luxembourg meet. Three of the signatories, Belgium, Luxembourg and the Netherlands, had already abolished common border controls under the Benelux Economic Union. [Citation required] Schengen is a European zone made up of 26 countries that have abolished internal borders. Instead, these countries have focused globally on strengthening external borders. Citizens of the Schengen area can travel from one country to another within that territory, as if the whole region were one country.