Question: What case, involving an enslaved man of "the negro African race" who had been taken by his owners to free states and territories, attempted to sue for his freedom, referenced American Insurance Co. v. 356 Bales of Cotton?
Sentence (from "American Insurance Co. v. 356 Bales of Cotton"): The case involved the validity of a local court established by Congress in the Florida Territory whose judges lacked life tenure, as mandated by Article III of the Constitution.
Relevant evidence: No