While the delegates did indeed have a sense of an American Nation--a concept of a new shared ethnicity, born in struggle--as well as their respective State identities--they were not forging a single nation. They were creating a Federal Government, with limited functions, intended to serve those interests that they had in common. The EU, by intruding into such outlandish things as relations between the sexes, and how the sexually normal treat asexuals, as well as dictating ethnic relations and attitudes, has already gone beyond what the Founding Fathers entrusted to the new Federal Union. While it did provide for uniform laws on immigration and naturalization, it left up to the States, communities and individuals, how they would view each other.
William Flax Return Of The Gods Web Site
As I mentioned in an earlier post, I believe that, unless the convention is stacked with Eurocrats, this is probably what will occur. European nations are quite jealous of their sovereignty, and it is unlikely that they will be willing to give the EU control of their internal affairs.
I suspect that any European constitution, if devised by the delegates of the member states, will limit the EU to trade, monetary policy, and those things related to them, and this is as it should be.