The US Constitution is based on biblical covenants? The Bible had nothing to do with the Constitution. And there was never any agreement between man and god.
The constitution was influenced by classical antiquity, the English form of government, the writings for French philosophers, the Magna Carta and the English Bill of Rights.
The nation was founded by Christians but that doesn’t give the Christian religion any place in government.
Interpretation of the Constitution is ever evolving. I won’t argue this any further here and I’ll let the courts interpret the law of the land. In the end, I’m confident that the Soledad cross will be removed.