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] The two Schengen agreements have been a major step forward for transport in Europe. Queues would often be one kilometre long and wait for border patrols to sign them, but the agreements helped to stop them. Today, people can enter neighbouring countries without having to present any form of identity card. Of course, airlines always require you to show it for security reasons, but border controls are much easier to navigate and don`t even exist in some cases. With the entry into force on 1 May 1999 of the Schengen Protocol of the Treaty of Amsterdam of 2 October 1997, Schengen cooperation was transposed into EU law, initially solely on the basis of an international agreement. 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.  Obtaining the visa resulting from the Schengen Agreement is, in another case, a visa procedure. You apply, send your passport and then receive a stamp if you are approved. However, they must meet certain criteria and requirements in order to qualify for a visa under the Schengen Agreement. One of the most remarkable requirements is Schengen visa insurance. Relations between Iceland and Norway, on the one hand, and Ireland and the United Kingdom, on the other, in the areas of the Schengen acquis applicable to Iceland and Norway are governed by an agreement approved by the Council of the European Union on 28 June 1999. Originally, the Schengen treaties and the rules adopted between them were officially independent of the EEC and its successor, the European Union (EU). In 1999, the Treaty of Amsterdam incorporated them into EU law, which codified Schengen into EU law and also introduced opt-outs for Ireland and the Kingdom, the latter having taken place since its withdrawal from the EU.
EU Member States that do not yet have an opt-out and have not yet joined the Schengen area are legally obliged to do so if they meet the technical requirements. Although it is linked to EU legislation, several third countries are present in this region after signing the agreement. The United Kingdom and Ireland participated in certain aspects of the Schengen Agreement from 2000 and 2002, such as the Schengen Information System (SIS). Indeed, the Schengen Agreement paved the way for the release of the Schengen visa. Although this is not part of the original provisions of the agreement, the top 15 countries need only a visa for all.