I'm a little hazy on how this gets enforced. I thought the EU made rules, but then those rules had to be ratified and implemented by the national governments of the member nations (and historically, some of them have been very lax about implementing and enforcing those rules).

Will we end up with a hodgepodge of national rules from each EU country that is effectively unenforceable? Or is there a different mechanism that allows the EU to enforce a blanket rule over all the EU nations?