You have a dispute with your neighbor concerning a tree growing on the property line. You both agree in advance to abide by the decision of an arbitrator in order to avoid going to court. Whose “sovereignty” has been violated?
There is no comparison to a property dispute between two Americans, and a non-elected body of foreigners determining US laws.
Obviously, you have no comprehension or clue of what it means to have “national soverignty”. Proof that Free Trade and Globalism is nothing more than treason