Justice Moore is aware that the federal courts have egregiously exceeded their authority, usurping power properly reserved to the states. He is fighting to preserve the principle of federalism in furtherance of the cause of liberty.
Here's where it gets messy. The First Amendment contains two religion clauses, the Establishment Clause: "Congress shall make no law respecting an establishment of religion"; and the Free Exercise Clause: "or prohibiting the free exercise thereof." The federal courts have ordered Justice Moore to remove the monument on the grounds that it constitutes an unconstitutional establishment of religion.
Their ruling is flawed on a number of grounds, but unfortunately seems to follow the precedent of earlier lamentable Supreme Court decisions. As you can see, the Establishment Clause, on its face, prohibits only the U.S. Congress from "establishing" a religion. Sadly, the Supreme Court has repeatedly held that the Establishment Clause is also applicable to state governments through incorporation in the Due Process Clause of the 14th Amendment.
But the 14th Amendment was never intended to make the federal Establishment Clause binding on the states. Nor did the Framers intend that the Establishment prevent the federal government, much less the states, from all support for religion.
Supreme Court Chief Justice Joseph Story wrote, "Thus, the whole power over the subject of religion was left exclusively to State governments, to be acted on according to their own sense of justice and the State Constitutions." And, "Probably, at the time of the adoption of the Constitution, and of the (First Amendment), the general, if not universal, sentiment in America was that Christianity ought to receive encouragement from the State, so far as such encouragement was not incompatible with the private rights of conscience, and the freedom of religious worship. An attempt to level all religions, and to make it a matter of state policy to hold all in utter indifference, would have created universal disapprobation, if not universal indignation."
The federal courts have greatly eroded states rights and religious freedoms through renegade decisions in the most cynical tradition of judicial activism. So while our federal law is certainly entitled to supremacy, at what point do citizens stand up and say that federal courts have claimed supremacy in areas over which they were never given authority? What can be done about their obscene misinterpretations of the Constitution?
Congress could selectively limit the Court's jurisdiction. And, we should fight for constitutionalist federal judges with the courage to preserve our religious liberties. In the meantime, we should honor the Court's rulings.