"On 1 November 1993, under the third Delors Commission, the Maastricht Treaty became effective, creating the European Union with its pillar system including foreign and home affairs alongside the European Community.[16][17] The 1994 European elections were held resulting in the Socialist group maintaining their position as the largest party in Parliament. The Council proposed Jacques Santer as Commission President but was seen as a second choice candidate, undermining his position. Parliament narrowly approved Santer but his commission gained greater support being approved by 416 votes to 103, Santer had use his new powers under Maastricht to flex greater control over his choice of Commissioners. They took office on 23 January 1995.[18]"
"The Schengen Agreements and the rules adopted under them were, for the EU members of the Agreement, entirely separate from the EU structures until the 1997 Amsterdam Treaty, which incorporated them into the mainstream of European Union law. The borderless zone created by the Schengen Agreements, the Schengen Area, currently consists of 25 European countries, covering a population of over 400 million people and an area of 4,312,099 square kilometers (1,664,911 sq mi).[1]"
Bzzzt! Wrong treaty! Bzzzt! No idea about European integration!
Schengen is about abolishing borders, it is not at all about freedom of movement (i.e. the right to live and work everywhere).
Making freedom of movement possible is one of the central tasks of the European Union. Its most important goal is to create a common market. Freedom of movement of work is obviously an absolutely necessary pre-condition for a common market.
The European Union is wholly responsible for bringing that freedom of movement to EU member states. That's what the 1993 treaty was (mostly) all about!
There is no freedom of movement between all Schengen countries. I'm German and I definitly can't just go live and work in Switzerland (which is not an EU member) – despite Switzerland being a Schengen member.
And yes, it's true: The EU was founded in 1993. But that's not really the right way of looking at it. Before the EU there was the EEC (European Economic Community), founded in 1958. With the 1993 treaty the structure of the EEC was slightly changed, it was given more power and it was renamed to EU. Yes, there were changes but not really radical ones. For all intents and purposes EU and EEC are one and the same.
"On 1 November 1993, under the third Delors Commission, the Maastricht Treaty became effective, creating the European Union with its pillar system including foreign and home affairs alongside the European Community.[16][17] The 1994 European elections were held resulting in the Socialist group maintaining their position as the largest party in Parliament. The Council proposed Jacques Santer as Commission President but was seen as a second choice candidate, undermining his position. Parliament narrowly approved Santer but his commission gained greater support being approved by 416 votes to 103, Santer had use his new powers under Maastricht to flex greater control over his choice of Commissioners. They took office on 23 January 1995.[18]"
"The Schengen Agreements and the rules adopted under them were, for the EU members of the Agreement, entirely separate from the EU structures until the 1997 Amsterdam Treaty, which incorporated them into the mainstream of European Union law. The borderless zone created by the Schengen Agreements, the Schengen Area, currently consists of 25 European countries, covering a population of over 400 million people and an area of 4,312,099 square kilometers (1,664,911 sq mi).[1]"