David Cameron and other MPs think they can negotiate with European law. It is a very old delusion caused by not being bothered to buy even an entry-level primer.
During the 1980s Mrs Thatcher threw millions of pounds down a series of drains called Factortame. The essence of this festering sequence of cases was that the British government thought it could protect our fishing rights by specifying who could own British-registered ships based on nationality, even though the British government had signed those rights away in a treaty.
You do not need to be a lawyer to understand that if you have signed a reciprocal treaty and then you go to the trade court moaning that 'snot fair, they will just point to your signature on the bottom of the deal. What are you complaining about? You want to fish their waters, they want to fish yours. You can own their boats, they can own yours. If you can't take a joke, you should not have signed up.
The code word for this is 'pooling our sovereignty in designated areas'. i.e. All of them. Whereas I think sovereignty is like virginity. You either are, or you aren't.
European law takes precedence over English law. Politicians should check what the European Court of Justice said half a century ago; they need not take this blog's word for it - why not ask a reputable law publisher?
Thompson Reuters is offering a key freebie. You can have a section of the Nutshell Guide to European Law online. For political purposes you do not even need to read all of it. Just scroll down to their section 4, EU and National Law, page 36,37, 38.
People feeling studious can read to the end, though. It is not long - only ten pages of core material as the rest is surrounding items such as the cover. Somebody should print this out for the Prime Minister.