A treaty is not legitimate until the Senate ratifies it, according to the United States Constitution. No matter how the enemies of the US Constitution try to trick us, we can see for ourselves what it says in black and white. An unratified treaty is not made "under the Authority of the United States" and has no legal or moral weight in the US.
Can an evil government use force to do things it has no legal or moral authority to do? Yes. You will get no argument from me on that subject. History is full of examples of "might makes right" government, but historical abuses don't give legitimacy to those governments or their acts.
