[ugh]

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.