Schengen acquis

Schengen acquis
source
Name	Schengen acquis
Long name	The body of law and agreements comprising the Schengen rules
Type	Multinational treaty framework
Context	European integration
Date drafted	14 June 1985 (Schengen Agreement), 19 June 1990 (Schengen Convention)
Date signed	Various
Location signed	Schengen, Luxembourg
Date effective	26 March 1995
Condition effective	Ratification by initial seven states
Parties	29 European states (all European Union member states except Ireland and Cyprus; plus Iceland, Liechtenstein, Norway, and Switzerland)
Depositor	Government of Luxembourg
Languages	Bulgarian, Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, Italian, Latvian, Lithuanian, Maltese, Polish, Portuguese, Romanian, Slovak, Slovene, Spanish, Swedish

Schengen acquis. It constitutes the comprehensive body of rules and legislation governing the Schengen Area, a zone where internal border controls have been abolished. Formally integrated into the framework of the European Union by the Treaty of Amsterdam, it is founded on the original Schengen Agreement of 1985 and the implementing Schengen Convention of 1990. The term "acquis" denotes the accumulated legal heritage, which is binding on all participating states and forms a cornerstone of European freedom of movement.

Definition and legal basis

The legal foundation originates from the intergovernmental Schengen Agreement, signed by Belgium, France, West Germany, Luxembourg, and the Netherlands aboard the ship *Princesse Marie-Astrid* on the Moselle river. This was followed by the detailed implementing convention signed in 1990. A pivotal legal transformation occurred with the Treaty of Amsterdam, which incorporated the entire framework into the legal system of the European Union under a protocol. This integration made the rules part of the European Community law, enforceable by the Court of Justice of the European Union. The European Commission and the European Parliament gained significant oversight roles, while operational coordination is managed by agencies like Frontex.

Development and evolution

Initial development was driven by the Benelux countries' experience with open borders and the desire to extend this model beyond the European Economic Community. Following the initial 1985 accord, the 1990 Schengen Convention established the practical measures for abolishing internal borders and introduced the Schengen Information System. Key milestones include the first implementation in 1995 by seven states: the original five plus Portugal and Spain. The Treaty of Amsterdam in 1999 formally ended its intergovernmental status. Subsequent evolution has been characterized by continuous updates to the Schengen Borders Code, enhancements to the Schengen Information System, and the creation of new databases like the Entry/Exit System and the European Travel Information and Authorisation System.

Key components and principles

The central pillar is the removal of systematic controls at the internal borders between participating states, allowing for the free movement of persons. To compensate for this, a series of flanking measures were established, including a common policy on the temporary reintroduction of border controls under strict conditions. A unified visa policy governs short stays for nationals of third countries, issuing the Schengen visa. Critical compensatory measures involve enhanced police and judicial cooperation, underpinned by the Schengen Information System, a vast database for alerts on persons and objects. Further principles include standardized procedures for crossing external borders and the concept of mutual recognition of judicial decisions.

Implementation and enlargement

Full implementation requires a candidate state to undergo a rigorous evaluation process conducted by experts from the European Commission and existing member states, assessing readiness in areas like border control, data protection, and visa policy. After a unanimous decision by the Council of the European Union, the state can formally join. The area has expanded from the original core to include nearly all European Union member states; Bulgaria and Romania gained partial access in 2024. Non-EU states Iceland, Liechtenstein, Norway, and Switzerland participate through associated agreements. States like Ireland maintain an opt-out, while Cyprus has not yet completed the evaluation process.

Relationship with the European Union

Its integration via the Treaty of Amsterdam made it part of the European Union's legal and institutional framework, specifically under the area of Freedom, Security and Justice. The European Commission ensures member states correctly apply the rules and can initiate infringement proceedings. The European Parliament exercises democratic scrutiny, particularly over updates to the Schengen Borders Code. Operational support is provided by Europol and Frontex. However, the specific status of non-EU participants like Switzerland is governed by separate international agreements that oblige them to adopt relevant new legislation.

Impact and significance

It has fundamentally reshaped travel and mobility within Europe, creating the world's largest area of free movement and symbolizing European integration alongside the euro. Economically, it has facilitated tourism, trade, and cross-border commuting, notably in regions like the Øresund Region between Denmark and Sweden. Politically, it has necessitated unprecedented levels of cooperation between national police forces and judiciaries, fostering trust through instruments like the European Arrest Warrant. The system has faced significant tests, including during the 2015 migration crisis and the COVID-19 pandemic, which led to widespread temporary border closures, demonstrating both its resilience and its vulnerabilities. Category:European Union law Category:Treaties of the European Union Category:Visas Category:Borders