This is interesting. 
express.co.uk/news/politics/ … it-support
Which shows the delusional thought processes going on the heads of the muppets running the EU like Juncker.In which he intends to play off US Federalism against the Brexit/EU secessionist vote and the large scale preference in Europe for a Europe made up of seperate self governing nation states.
While he also seems to have missed the small matter of the US constitution having been established now for over 200 years.Ironically bearing in mind that it also took a war of Federal aggression which killed a massive proportion of the US population to do it and which arguably created a flawed,inferior,less democratic Federal Constitution,than the original Articles of Confederation based on state sovereignty as intended. 
So I’d suggest that Juncker should go ahead with his attempt in which he’ll probably find that much of the US population would say yes they’d like to have the return of the same right to self determination and democratic accountability of the individual states that secession from the EU is all about or in fact secession anywhere.Nor would Trump probably want to stand in their way.Bearing in mind the obvious democratic advantages which a Confederal US system,or a Europe made up of its sovereign Nation States,has over James Madison’s flawed,relatively undemocratic,one size fits all,US Federal government system.
Let alone Juncker’s obvious plan for a USE,based on the dictatorial aims of unelected power hungry nutters like him and the EU Commissioners or at best qualified majority state vote.All of which means laws here decided and imposed by a foreign agenda with no electoral mandate here.