No, they are not. The constitution specifically states that they are "under" the authority of the Constitution. They do not supercede, nor can they change, the actual Constitution. Once again, it was the reason for the Veto. The UN therefore could not, on its own, without agreement from the US overrule the US positions. It is what makes the UN Treaty constitutional.
It cannot override the authority of the constitution, as it is ratified under the power of the constitution. "under" being the operative word.
I never said a treaty overrides the constitution. It is the equivalent of a legislative act, enacted pursuant to the constitution. Ergo, the United States is compeled to abide by treaty obligations it is a signatory to.
This isn't 1789 anymore damo. The SCOTUS has ruled on this. Multiple times. It considers a treaty to be the equivalent to an act of legislation. A legal contract between two, or more, nations.