It should be noted that the credentials of Emerich de Vattel
According to Wikipedia:
Vattel was a Swiss philosopher, diplomat, and legal expert whose theories laid the foundation of modern international law and political philosophy.
Benjamin Franklin also said that this book by Vattel, "has been continually in the hands of the members of our Congress now sitting"
On Oct. 8, 1789 George Washington had checked out from the lending library a copy of Law of Nations and it wasn't returned until 221 years.
Law of Nations has been described as "unrivaled among such treatises in its influence on the American founders".