There are twenty seven member states in the European Union, all sovereign and independent.  Do these people call themselves Europeans, of course, yet they are first and foremost citizens of Germany, France, England, Sweden, Romania or whatever their native state.   Each state has representation in the  European Union.  As of February 2012 no member state has withdrawn from the EU. However Greenland, as a territory, did so when gaining home rule from a member state (Denmark).

Likewise in 1860 there were thirty three states that made up the United States and all were sovereign and independent as well.  An individual was a citizen of his native state (country), Virginia, Tennessee, Georgia, New York, Massachusetts and so on.  

If seven states (countries) of the European Union found that they no longer wanted to remain as members of the EU, because it became oppressive; could you in your wildest dreams imagine the President of the EU raising an army and calling for carpet bombing of the seceded nation states to force them back into the oppressive Union? 

This is exactly what Lincoln did in 1861.  We find the definition of treason in Article III section 3 of the Constitution where it states that “Treason against the United States shall consist only, in levying war against them...”  

(Technically there is no President of the EU but, rather President of the European Council)

Photo:  Some of Morgan's men...