Section 2 - Trial by Jury, Original Jurisdiction, Jury Trials
(The judicial Power shall extend to all Cases, in Law and Equity, arising under this Constitution, the Laws of the United States, and Treaties made, or which shall be made, under their Authority; to all Cases affecting Ambassadors, other public Ministers and Consuls; to all Cases of admiralty and maritime Jurisdiction; to Controversies to which the United States shall be a Party; to Controversies between two or more States; between a State and Citizens of another State; between Citizens of different States; between Citizens of the same State claiming Lands under Grants of different States, and between a State, or the Citizens thereof, and foreign States, Citizens or Subjects.) (This section in parentheses is modified by the 11th Amendment.)
In all Cases affecting Ambassadors, other public Ministers and Consuls, and those in which a State shall be Party, the supreme Court shall have original Jurisdiction.
So in the event of a controversy, the state is obligated by the constitution to resolve it, not by armed force, but by presenting its case to the Supreme Court. See you in court counselor.
I read it, and it still does not expressly prohibit any state to secede. Until you can point me to that phrase or one like it, you’re wasting your time with your run around. The 10th Amendment is very firm on the matter. What is not prohibited by the Constitution is reserved to the States and to the People.
Found it yet?