What does Article 5 of the Constitution suggest......describing the formal amendment process?
“The Congress, whenever two thirds of both Houses shall deem it necessary, shall propose Amendments to this Constitution, or, on the Application of the Legislatures of two thirds of the several States, shall call a Convention for proposing Amendments, which, in either Case, shall be valid to all Intents and Purposes, ..........
They’re talking about Article 5 of the NATO Charter. Not the US Constitution.
Article Five of the NATO treaty which binds all members to go to war if another member is attacked. A good old fashioned pre-WW1 stye entangling alliance.