Yes, the comparison to the our Union and States is an apt one, and interesting. I am no economist either, just an interested participant in world economics. It is true for instance that today, California is offering bonds at 1.5%, whereas Texas is only paying .48%. California is not going to disappear as most of the States problems are political, not purely economic, but the State is paying a "premium" for being fiscally irresponsible regardless of how it got there. If we take this analogy to Europe, and I don't think anyone in the EU would consider themselves a "state" in that system, but that is a major distinction and potential rub as far as shared liabilities are concerned. For now Spain can probably continue to pay more for its bonds than Germany. Within the EU system you describe, how can Spain, Italy, Ireland, Portugal, and Greece continue to remain in the Union if they are continually above the 3% deficit budget ceiling, and if what will be the backlash to reduced government spending say in Spain where unemployment is already 20%?
I don't have the answers, but think it's worth raising the question, since the UK's potentially joining the EU might be fraught with assuming the economic liability of the weaker EU members. Ultimately I see this as the weak point in the system. In the US by contrast, and in no way do I give the Fed high marks during the mid 90-s to mid 00's Greenspan era, the Fed can borrow, and Congress can redistribute to the States, as they recently did during the stimulus, to make whole the shortfalls, of which almost every state was under, less painful. Given the high debt levels already in the UK for both the private and public sectors assuming potential unfunded liabilities would seem to be the last thing everyone needs.
None of this has anything to do with the cultural aspects of why the union makes sense, and from that perspective it does, even though the English, including the Scots, Cornish, and Welsh, etc. have always been considered distinct culturally from the Continent, even with the "Old Alliance.". However the convenience of transportation, and trade, continue to bring peoples closer together, reducing old cultural distinctions, which at times seemed far wider than the Channel.
Lastly, do tell me more about why you feel it paramount to keep the Swiss Franc especially since the vaults of the banking system have been pried wide open by the IRS.