critically assess the legal accuracy of the following claims about the European union:

1. It is a Federal State with the ability to extend and exercise its powers against the wishes of member states
2. Its laws are passed by unelected 'eurocrats' and therfore an undemocratic body
3. Its court of justice is too powerful, its rulings undermine national courts and national parliaments.
4. Now the UK has left the EU it is free from any of the above claims