Juncker - who is the only European politician who signed the Maastricht treaty in ‘92 still active today - reiterated at a 20 year commemoration mid January this year that for him, the European Fiscal Union remains an unconventional measure of politics for common peace.
Then again, it's also just a logical extension of the same process through which the most powerful European states today have formed themselves.
What the US has, and the EU would need, are some mechanisms to level economic differences between the constituent states. Any federal US program effectively works as such, even though that is rarely acknowledged in the public discourse. As but one example: military spending is financed primarily by the economically strong and populous states, and disproportionately favors poorer states with defense contacts or military bases.
The EU has a few such mechanisms, some explicit (regional development funds), some less so (agriculture). But the total E.U. budget is rather tiny compared to the economy. Something like a common unemployment insurance would be best, mechanistically. Because it would automatically adjust to changing fortunes at the very local level without requiring constant political intervention and the accompanying bargaining. At present, such a policy is unlikely to find approval because of pervasive remaining mistrust („lazy Greeks taking our money“).
It can be argued that the Euro has certain structural issues, or that the wealth transfer is too big/small, but the EU demonstrates that you don't need to become one nation just to have wealth transfers.
But from a political and social point of view, while it's somehow easy to convince the citizens of a nation that they have to contribute from their own pockets to the common good, the situation is much harder in Europe. We are not a nation, we are culturally and linguistically different, we consider ourselves as separate entities. The euro is actually increasing reciprocal distrust. The whole EU political system is overly complicated (and, ironically, undemocratic) because it includes both a parliamentary democracy and a council of heads of states- because no European nation would trust decisions made by a shared parliament without having them vetted by their own national governments.
There should have been a major push in education to form citizens that would be at least able to understand each others- there wasn't, at least in part of the EU. Damn, we have major EU members that decide to wage wars on their own, it's inconceivable.
So how do you convince the citizens of rich, disciplined countries, to get money out of their pockets to heavily subsidize the citizens of other countries, speaking a different language, with autonomous armies, different legal systems, completely separate political class, very limited transfers of people across borders (and mainly in one direction, north)?
/rant :)
I live in one of the wealthiest NUTS3[1] regions in the EU. Why should I be paying higher taxes to send someone's kid living in the boonies in my country to school? Let's just form a city-state instead. We even have a handy historical defensive wall we could resurrect for that purpose.
Of course most people would think that's absurd, but it's worth mentioning since this notion that you should subsidize your "countrymen" was once just as novel as the idea that the Dutch should subsidize the Greeks is to some today.
You're only taking this for granted for nation states because you grew up in the era of nation states. There's no intrinsic reason for why someone born in the EU area in 2100 wouldn't find the idea that you shouldn't engage in wealth transfers within that area as quaint as the idea that we should being going back to city-states is today.
I think if anything what the WTO, NAFTA, EU etc. show is that in the future the idea that you need to sign up for some "package deal" of a nation state for everything from tariffs to defense will be viewed as too monolithic.
1. https://upload.wikimedia.org/wikipedia/commons/9/90/Map_of_G...
I know very well the issue because it's been at the center of a bitter north- south dispute in Italy for decades. (the rich, productive north complains that too much money has been given to the south without appreciable results).
But in the national case the transfers are decided at national level, the regions have no say in it; if there are protests, a national police keeps order. The tax money is collected by state entities, and then redistributed to the regions. There have been pushes to partly change this, but there is also a strong cultural resistance because there is a sense of national unity, of shared history, cultural and family ties, and a historical foundational myth.
All this stuff is weak or non-existent for the EU as a community. It's not impossible in principle, it's simply not there now, and given all the differences- especially linguistic- it seems that it's going to take a long time and a lot of effort to create, provided that there is even the will to do so.
I don't think we fundamentally disagree. I agree that it's possible, it's just that there is going to be a lot of resistance along the way and that the national governments, which still hold the majority of the power in the EU and are still the intermediaries between their citizens and EU institutions, will be extremely cautious in implementing such a system without a complete support from their citizens.
Ah, 2100 is very, very far away. I'm not sure we can wait that long.