Treaties of the European Union

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The treaties of the European Union are effectively its constitutional law, making up the EU's primary legislation.

The European Union is currently undergoing a treaty that would approve its first constitution in its 53-year history.

Contents

Current treaties

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Evolution of the structures of the European Union.
European Union - EU treaties, structure, history
1952 1958 1967 1993 1999 2003 ?
EC - European Community... E U R O P E A N   U N I O N   ( E U )
European Coal and Steel Community (ECSC)
European Economic
Community
(EEC)
European Community (EC)
Euratom (European Atomic Energy Community)
...European Communities: ECSC, EEC (EC, 1993), Euratom Justice &
Home Affairs
 
Police & Judicial Co-operation
in Criminal Matters
(PJCCM)
Common Foreign and Security Policy (CFSP)
Treaty of
Paris
Treaties of
Rome
Merger
Treaty
Treaty of
Maastricht
Treaty of
Amsterdam
Treaty of
Nice
European
Constitution
"THREE PILLARS" - European Communities (ECSC, EC, Euratom), Common Foreign and Security Policy (CFSP), Justice and Home Affairs

Founding treaties

European integration is at present based on four founding treaties:

Amending treaties

At times there have been far-reaching reforms bringing major institutional changes and introducing new areas of responsibility for the European institutions:

Accession treaties

Main article: Enlargement of the European Union

The founding treaties have also been amended (in a more limited fashion) whenever new member states acceded:

Budgetary treaties

Lastly there have been two budgetary treaties:

European Constitution

The European Constitution seeks to consolidate, simplify and replace the existing set of overlapping treaties. It was signed on 29 October 2004 and is due to come into force on 1 November 2006, conditional on its ratification by all member states, many of which are holding a referendum on the issue.

In the meantime, or if the Constitution fails to be ratified by all member states, the EU will continue to work on the basis of the current treaties as described above.

See also: Treaties of the European Union, 12 June, 16 April, 1951, 1952, 1957, 1958, 1965