This is great.
However, it is critical to know and communicate that Emmerich de Vattel was not their source, but a resource. He dictated nothing. He essentially reported upon the established international law (including natural law) of the time.
They used it as an imperfect map, not as the mandates of a design.
Also, by the time of the writing of the Constitution, they had to refer to international law constantly, in determining how the states were to behave with each other, under the Articles of Confederation. So, it is absurd for Obamunist revisionists to assert that international/natural law was a nebulous and undefined set of jargon, especially when it comes to the terms used in the U.S. Constitution.
These matters are brought out (too quietly, so far, IMHO) by the Undead Revolution and Zapem. Leo Donofrio is helping, but is kind of westwardly distracted now.
THE MORE RESEARCH IS DONE ON THIS, THE MORE LEGAL VERACITY WILL BE FOUND.
They came pretty darn close with the (first part of the) Declaration of Independence.