Why is calling something a "human right" and pointing to some UN declaration any different than calling something a "God-given right" and pointing to the Bible?
That the UN exists does not explain the reason behind the policies.
That's like saying the bible is true because the printer exists, or the church, which is of course trivially true. That some organisation is behind a document does not make it true or false.
And keep in mind that the League of nations (the creators of the UN) came forth from the Red cross, which was a division of the army that guards of the pope.
* entitled to have children [1]
* entitled to financial and other aid to raise those children safely and securely [2]
Since the US has signed these treaties, and unless it intends to back out, there can be no government policy that does not follow these articles.