A learned friend on the House of Bishop/ House of Deputies list points to the language of Article 2 of the 1789 Constitution, having to do with being "bound by the acts of ...Convention." This quote can be found on page 31 of Volume I of the Annotated Constitution and Canons. It reads in part,
"If the Convention of any State should neglect or decline to appoint Clerical Deputies, or if they should neglect or decline to appoint Lay Deputies, or if any of those of either Order appointed should neglect to attend, or be prevented by sickness or any other accident, such State shall nevertheless be considered as duly represented by such Deputy or Deputies as may attend, whether Lay or Clerical.
And if, through the neglect of the Convention of any of the Churches which shall have adopted, or may hereafter adopt, this Constitution, no Deputies, either lay or Clerical, should attend at any General Convention, the Church in such State shall nevertheless be bound by the acts of such Convention."
Of interest here are two phrases: " any of the Churches which shall have adopted, or may hereafter adopt this Constitution," and "shall nevertheless be bound by the acts of such Convention."
These may rightly be understood as a the basis for saying that The Episcopal Church has from the beginning understood that dioceses are bound by the acts of General Convention (and changes in the Constitution and Canons of The Episcopal Church are prime examples of such acts).
The binding covers "any of the Churches which shall have adopted, or may hereafter adopt this Constitution." Note that what we now call "Dioceses" are referenced here as the Convention of a State or as "the Church (in that State).
So what this means is that the Constitution and Canons put into effect by the founding dioceses understood that:
If a deputation walks out, they are nonetheless bound.
If they don't show up for whatever reason, they are nonetheless bound.
This is true for those who first signed, those at the 1789 Convention, and all thereafter.
Now being bound by the acts of Convention is precisely what "accession" is about - being bound by the Constitution and Canons of The Episcopal Church. This "being bound" was not qualified then, it is unqualified now.
So much for all that strange argument that the Diocese of South Carolina is exempt from the accession clause, because it never agreed to being bound by the acts of Convention.
There it is.