The first law statute of the United States of America, enacted in the first session of the First Congress on 1 June 1789, was Statute 1, Chapter 1: an act to regulate the time and manner of administering certain oaths, which established the oath required by civil and military officials to support the Constitution.
The wording of the Presidential Oath was established in the Constitution in Article II, Section 1, Clause 10.
“I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my ability, preserve, protect and defend the Constitution of the United States”
The requirement for all Federal and State Civil officers to give their solemn and binding Oath is established in Article VI, Section 1, Clause 4.
“I do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I take this obligation freely, without any mental reservation or purpose of evasion; and that I will well and faithfully discharge the duties of the office on which I am about to enter: So help me God”.
They are bound by their Oath to support the Constitution, and should they abrogate their Oath by their acts or inaction, are subject to charges of impeachment and censure.
Once given, the Oath is binding for life, unless renounced, refused, and abjured. It does not cease upon the occasions of leaving office or of discharge.
Solemn: “Legally binding, Common legal phrase indicating that an agreement has been consciously made, and certain actions are now either required or prohibited”; “The other requirement for an agreement or contract to be considered legally binding is consideration - both parties must knowingly understand what they are agreeing to”.
Bound: “Being under legal or moral obligation; To constitute the boundary or limit of; To set a limit to; confine”
Abrogate: "to abolish by authoritative action"; "to treat as nonexistent"
America is a Constitutional Republic. The Constitution is our government, not the people elected to temporarily carry out the duties of the three branches.
“God provided that in this land of liberty, our political allegiance shall run not to individuals, that is, to government officials, no matter how great or how small they may be. Under His plan our allegiance and the only allegiance we owe as citizens or denizens of the United States, runs to our inspired Constitution which God himself set up. So runs the oath of office of those who participate in government. A certain loyalty we do owe to the office which a man holds, but even here we owe just by reason of our citizenship, no loyalty to the man himself. In other countries it is to the individual that allegiance runs. This principle of allegiance to the Constitution is basic to our freedom. It is one of the great principles that distinguishes this “land of liberty” from other countries”. J. Rueben Clark
"Under the American Constitution a new structure of government was established on a much higher plane than either the parliamentary system or the confederation of states. It was a people’s constitutional republic, where a certain amount of power was delegated to the states and a certain amount was delegated to the national government. There was a small dimension of power which they shared jointly. All other power was retained by the people. It is the delegation by the people of certain powers to the states and certain powers to the national government which we call ‘dual federalism.’" W. Cleon Skousen, "The Making of America"
“A constitution is not the act of a government, but of a people constituting a government; and government without a constitution is power without a right. All power exercised over a nation, must have some beginning. It must be either delegated, or assumed. There are not other sources. All delegated power is trust, and all assumed power is usurpation. Time does not alter the nature and quality of either.” Thomas Paine
The solemn legally binding Oath is a requirement of office (the US Constitution is the Supreme Law of this land, not the federal government) .
As a "requirement", if it is ignored or gone against we need to be able to immedidately replace the person who no longer meets the requirement of the office or position being occupied with one who does meet the requirements.
If the offense is bad enough we need to be able to require the arrest and subsequent prosecution of the oath breaker.
If there were never intended to be action to defend the Constitution from those who are domestically attempting to destroy its power and authority, why would each Oath require it of those who take the Oaths?