I can hardly believe that you are trying to tell me that the reference in Article 1, Section 8 is a reference to Vattel's Law of Nations when it is clearly nothing of the kind.
This is simply a reference to 'international law;" nothing more.
With every post it becomes harder and harder to take you seriously.
And just who was the acknowledged EXPERT at the time in INTERNATIONAL LAW? He was THE Reference on the internaational Scene! VATTEL!
“The Law of Nations has been described as “unrivaled among such treatises in its influence on the American founders”.
from Wikipedia Vattel, the Law of Nations
SORRY but you are wrong.