Question: Who was the Chief Justice behind the Supreme Court decision where Robert Cooper Grier served as a juror, which denied a "negro" could an American citizenship?
Sentence (from "Dred Scott v. Sandford"): It held that "a negro, whose ancestors were imported into [the U.S.], and sold as slaves", whether enslaved or free, could not be an American citizen and therefore had no standing to sue in federal court, and that the federal government had no power to regulate slavery in the federal territories acquired after the creation of the United States.
Relevant evidence: Yes