Posted: 10/11/2016 at 16:26
Actually, Pansyface, the coal agreement came after Belgium and Italy did a post war deal on coal for workers and France and Germany then joined in and made it a wider entity. That's why so many Italians found themselves working in Walloon coal mines and still have strong communities there today.
The USA went through the whole Union thing in the 19th century because they were all emigrants making a new life and wanted security and stability.
In Europe, there are communities, cultures, nations going back for millennia. The move to freedom of movement and trade has been good for most who were already within it but now it's become too attractive to outsiders feeling political or economic difficulties or war at home. If they could get a boat from Libya to the US I'm sure they would but the EU is so much closer and has all that lovely social security the US lacks.
I don't see how you reverse increasing globalisation by trying to close very pervious borders and I don't see the UK or the USA filling seasonal jobs like fruit picking from its own peoples or, indeed, some of the high end jobs requiring certain skill sets for which the education system does not provide sufficient candidates.