"It will be observed that the plea applies to that class of persons only whose ancestors were negroes of the African race, and imported into this country, and sold and held as slaves. The only matter in issue before the court, therefore, is, whether the descendants of such slaves, when they shall be emancipated, or who are born of parents who had become free before their birth, are citizens of a State, in the sense in which the word citizen is used in the Constitution of the United States. And this being the only matter in dispute on the pleadings, the court must be understood as speaking in this opinion of that class only, that is, of those persons who are the descendants of Africans who were imported into this country and sold as slaves. * * * * * "We proceed to examine the case as presented by the pleadings. "The words 'people of the United States' and 'citizens' are synonymous terms, and mean the same thing. They both describe the political body who, according to our republican institutions, form the sovereignty, and who hold the power and conduct the government through their representatives. They are what we familiarly call the 'sovereign people, and every citizen is one of this people, and a constituent member of this sovereignty. The question before us is, whether the class of persons described in the plea in abatement compose a portion of this people, and are constituent members of this sovereignty. We think they are not, and that they are not included, and were not intended to be included, under the word 'citizen' in the Constitution, and can therefore claim none of the rights and privileges which that instrument provides for and secures to citizens of the United States. On the contrary, they were at that time considered as a subordinate [405] and inferior class of beings, who had been subjugated by the dominant race, and, whether emancipated or not, yet remained subject to their authority, and had no rights or privileges but such as those who held the power and the government might choose to grant them. "It is not the province of the court to decide upon the justice or injustice, the policy or impolicy, of these laws....