The whole point is the EU was intended and started as an economic enterprise, it included lots of little things that, perhaps with hindsight, are better off being handled in their contry of origin. The issue now is that changing it to a political one is going to take a massive shift in direction. Local governments would have to give up a huge wodge of their law writing power to a centralised government and, hopefully, at the same time reclaim a load of lower stuff. The whole direction of the EU would need to change from laws on bananas and financing farming to handling Europewide law. There is also the issue of realigning the governments, so far most have been remarkably efficient at ignoring any law coming out of the EU.
Then again, perhaps the first move should be to stop the EU moving back and forwards every month between Brussels and Strasbourg. Its a complete waste of time and otherwise purely a posing pouch issue brought up by the French. Or perhaps they should move to every country for a week and go completely around all participating nations?
There is also the issue that the American Federal government has *limited* ability to push irrelevant issues onto the states, in some ways their autonomy is higher than that of the UK now.
Want a not too bent banana?