“They were citizens by the evolution of circumstance when the constitution was ratified.”
Really? The courts have repeatedly said that citizens are either born or naturalized. But you won’t have any trouble, I’m sure, citing a case where the courts discuss evolutionary citizenship, and how it evolved.
If they were grandfathering in NB Subjects, why did they use the generic “citizen”? Hmmm???
Citizenship didn’t evolve; the circumstance allowing citizenship evolved by the ratification of the constitution, thus the conditions proposed therein came to be.
New Brunswick was separated from Nova Scotia only in 1784, just three years before the Constitutional Convention, and it was full of Loyalists. So I don't think they were worried about New Brunswick Subjects trying to become President of the United States.