[EternalVigilance]

And what person or agency is tasked with verifying it?

Every officer of government, at every level, ie all of those who swore an oath to uphold and defend the Constitution of the United States.

[Non-Sequitur]

Every officer of government, at every level, ie all of those who swore an oath to uphold and defend the Constitution of the United States.

And the law that says that is....?