I'm glad that you've reviewed this question of 'ever closer union' GG. Earlier this week I decided to investigate the principle of 'federalism' as so many Leavers have expressed their distaste for, and dislike of, the idea of a federal Europe.
Firstly I found this 2014 Guardian article by the late Charles Kennedy:
European 'federalism' isn't what you've been told it is
This term is key to the EU debate, yet politicians and the media cynically equate it with the imposition of a European superstate
...it is hard to maintain any meaningful discourse when the political vocabulary being employed by both sides means different things to different players in different places.
Nowhere is this more true than where the words "federal" and "federalism" are concerned. ... I was in Strasbourg, speaking at the Council of Europe on its ground-breaking report into the future of its troublesome cousin, the EU. Needless to say, the British government officially didn't see much point to this exercise. This despite the fact that the council, comprising 47 countries and 800 million citizens, predates the original common market by quite some way, being formed in the aftermath of the second world war to guard and promote human rights through the European convention and the European court. Its membership (the Russians are suspended) is drawn from all national legislatures involved and deserves a hearing, a sentiment with which our prime minister must surely sympathise.
What struck me more than ever was the extent to which the political meaning of federalism has been twisted and caricatured out of all recognition in what passes for British political debate on matters European these days. The true (continental as well as North American) definition was well summed up by Andreas Gross, the Swiss socialist under whose name the report was published. I doubt that even the most arch-Tory Eurosceptic could take exception to his front-cover summation: "Rather than constituting a model for an ever closer political union or a European state, federalism implies a process of balancing power in a differentiated political order which enables unity while guaranteeing diversity."
Most continental politicians would at one and the same time recognise, approve of and wish to apply that definition. Yet "federalism", in the context of political and media usage in Britain, has come to mean the creation and imposition of a European superstate, one centralised in Brussels. Two generations of opportunistic British journalists and politicians alike must shoulder the blame for such wilful misinterpretation and misuse.
www.theguardian.com/commentisfree/2014/jul/02/european-federalism-eu-debate-superstate
'subsidarity' is mentioned in most of your extracts GG. I suspect that very few people actually know what it means. Here's a definition: Subsidiarity is the principle of allowing the individual members of a large organization to make decisions on issues that affect them, rather than leaving those decisions to be made by the whole group
Then I found an book chapter on federalism and the EU (which I doubt that many people will want to read as it is long and academic. Note that it is by a US academic, before anyone starts accusing the author of bias (though bias is a bit of a sin in academia where objectivity is paramount)
I can't copy from this chapter as it's a scan rather than a printed document bu here is a review of it:
Moravcsik attacks the view, shared by Euro‐enthusiasts and Euro‐sceptics alike, that current developments in the EU herald the advent of a European federal state; according to Moravcsik, the EU lacks and is likely to continue to lack the fundamental competences that would make it federal. To make this point, Moravcsik emphasizes what the EU does not do and is unlikely to take on in the foreseeable future, spelling out how the ‘EU plays almost no role—at most a weak sort of international coordination—in most of the issue‐areas about which European voters care most, such as taxation, social welfare provision, defence, high foreign policy, policing, education, cultural policy, human rights, and small business policy’. Moravcsik finds this not surprising, since the EU's built‐in ‘constitutional constraints’, from fiscal to legislative and regulatory powers, create a strong bias towards the status quo.
www.princeton.edu/~amoravcs/library/federalism.pdf
Federal,meaning: www.thefreedictionary.com/federal
Of, relating to, or being a form of government in which a union of states recognizes the sovereignty of a central authority while retaining certain residual powers