Your first ‘reply’ to yourself:)
“Article 1. Section 10. Sentence 1: No state shall enter into any Treaty, Alliance or Confederation. There it is in plain English.”
Your second ‘reply’ to yourself :)
Prove it.
Keep in mind - Seceding States are no longer bound by the Federal Constitution.
Senator Joseph Lane of Oregon March 2, 1861:
My residence is in the North, but I have never seen the day, and I never shall, when I will refuse justice as readily to the South as to the North. . . .
Sir, if there is, as I contend, the right of secession, then, whenever a State exercises that right, this Government has no laws in that State to execute, nor has it any property in any such state that can be protected by the power of this Government. In attempting, however, to substitute the smooth phrases “executing the laws” and “protecting public property” for coercion, for civil war, we have an important concession: that is, that this Government dare not go before the people with a plain avowal of its real purposes and of their consequences. No, sir; the policy is to inveigle the people of the North into civil war, by masking the designs in smooth and ambiguous terms.