I don't see how his reasoning is stretching any reasonable interpretation of originalism/textualism:
"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 ‘citizens‘ 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. The decision of that question belonged to the political or law-making power; to those who formed the sovereignty and framed the Constitution. The duty of the court is, to interpret the instrument they have framed, with the best lights we can obtain on the subject, and to administer it as we find it, according to its true intent and meaning when it was adopted.
In discussing this question, we must not confound the rights of citizenship which a State may confer within its own limits, and the rights of citizenship as a member of the Union. It does not by any means follow, because he has all the rights and privileges of a citizen of a State, that he must be a citizen of the United States. He may have all of the rights and privileges of the citizen of a State, and yet not be entitled to the rights and privileges of a citizen in any other State. For, previous to the adoption of the Constitution of the United States, every State had the undoubted right to confer on whomsoever it pleased the character of citizen, and to endow him with all its rights. But this character of course was confined to the boundaries of the State, and gave him no rights or privileges in other States beyond those secured to him by the laws of nations and the comity of States. Nor have the several States surrendered the power of conferring these rights and privileges by adopting the Constitution of the United States. Each State may still confer them upon an alien, or any one it thinks proper, or upon any class or description of persons; yet he would not be a citizen in the sense in which that word is used in the Constitution of the United States, nor entitled to sue as such in one of its courts, nor to the privileges and immunities of a citizen in the other States. The rights which he would acquire would be restricted to the State which gave them. The Constitution has conferred on Congress the right to establish an uniform rule of naturalization, and this right is evidently exclusive, and has always been held by this court to be so. Consequently, no State, since the adoption of the Constitution, can by naturalizing an alien invest him with the rights and privileges secured to a citizen of a State under the Federal Government, although, so far as the State alone was concerned, he would undoubtedly be entitled to the rights of a citizen, and clothed with all the *406 rights and immunities which the Constitution and laws of the State attached to that character.
It is very clear, therefore, that no State can, by any act or law of its own, passed since the adoption of the Constitution, introduce a new member into the political community created by the Constitution of the United States. It cannot make him a member of this community by making him a member of its own. And for the same reason it cannot introduce any person, or description of persons, who were not intended to be embraced in this new political family, which the Constitution brought into existence, but were intended to be excluded from it.
Dred Scott v. Sandford, 60 U.S. 393, 404–06, 15 L. Ed. 691 (1857), superseded (1868)
.....
The legislation of the different colonies furnishes positive and indisputable proof of this fact.
It would be tedious, in this opinion, to enumerate the various laws they passed upon this subject. It will be sufficient, as a sample of the legislation which then generally prevailed throughout the British colonies, to give the laws of two of them; one being still a large slaveholding State, and the other the first State in which slavery ceased to exist.
The province of Maryland, in 1717, (ch. 13, s. 5,) passed a law declaring ‘that if any free negro or mulatto intermarry with any white woman, or if any white man shall intermarry with any negro or mulatto woman, such negro or mulatto shall become a slave during life, excepting mulattoes born of white women, who, for such intermarriage, shall only become servants for seven years, to be disposed of as the justices of the county court, where such marriage so happens, shall think fit; to be applied by them towards the support of a public school within the said county. And any white man or white woman who shall intermarry as aforesaid, with any negro or mulatto, such white man or white woman shall become servants during the term of seven years, and shall be disposed of by the justices as aforesaid, and be applied to the uses aforesaid.‘
**5 The other colonial law to which we refer was passed by Massachusetts in 1705, (chap. 6.) It is entitled ‘An act for the better preventing of a spurious and mixed issue,‘ &c.; and it provides, that ‘if any negro or mulatto shall presume to smite or strike any person of the English or other Christian nation, such negro or mulatto shall be severely whipped, at *409 the discretion of the justices before whom the offender shall be convicted.‘
And ‘that none of her Majesty's English or Scottish subjects, nor of any other Christian nation, within this province, shall contract matrimony with any negro or mulatto; nor shall any person, duly authorized to solemnize marriage, presume to join any such in marriage, on pain of forfeiting the sum of fifty pounds; one moiety thereof to her Majesty, for and towards the support of the Government within this province, and the other moiety to him or them that shall inform and sue for the same, in any of her Majesty's courts of record within the province, by bill, plaint, or information.‘
We give both of these laws in the words used by the respective legislative bodies, because the language in which they are framed, as well as the provisions contained in them, show, too plainly to be misunderstood, the degraded condition of this unhappy race. They were still in force when the Revolution began, and are a faithful index to the state of feeling towards the class of persons of whom they speak, and of the position they occupied throughout the thirteen colonies, in the eyes and thoughts of the men who framed the Declaration of Independence and established the State Constitutions and Governments. They show that a perpetual and impassable barrier was intended to be erected between the white race and the one which they had reduced to slavery, and governed as subjects with absolute and despotic power, and which they then looked upon as so far below them in the scale of created beings, that intermarriages between white persons and negroes or mulattoes were regarded as unnatural and immoral, and punished as crimes, not only in the parties, but in the person who joined them in marriage. And no distinction in this respect was made between the free negro or mulatto and the slave, but this stigma, of the deepest degradation, was fixed upon the whole race.
We refer to these historical facts for the purpose of showing the fixed opinions concerning that race, upon which the statesmen of that day spoke and acted. It is necessary to do this, in order to determine whether the general terms used in the Constitution of the United States, as to the rights of man and the rights of the people, was intended to include them, or to give to them or their posterity the benefit of any of its provisions.
The language of the Declaration of Independence is equally conclusive:
It begins by declaring that, ‘when in the course of human events it becomes necessary for one people to dissolve the political bands which have connected them with another, and to *410 assume among the powers of the earth the separate and equal station to which the laws of nature and nature's God entitle them, a decent respect for the opinions of mankind requires that they should declare the causes which impel them to the separation.
**6 It then proceeds to say: ‘We hold these truths to be self-evident: that all men are created equal; that they are endowed by their Creator with certain unalienable rights; that among them is life, liberty, and the pursuit of happiness; that to secure these rights, Governments are instituted, deriving their just powers from the consent of the governed.‘
The general words above quoted would seem to embrace the whole human family, and if they were used in a similar instrument at this day would be so understood. But it is too clear for dispute, that the enslaved African race were not intended to be included, and formed no part of the people who framed and adopted this declaration; for if the language, as understood in that day, would embrace them, the conduct of the distinguished men who framed the Declaration of Independence would have been utterly and flagrantly inconsistent with the principles they asserted; and instead of the sympathy of mankind, to which they so confidently appealed, they would have deserved and received universal rebuke and reprobation.
Dred Scott v. Sandford, 60 U.S. 393, 408–10, 15 L. Ed. 691 (1857), superseded (1868)
I think it's quite a stretch to argue that the 10th amendment precludes the Federal Gov't from having a definition of the word 'citizen' that is distinct from any given individual state's. At the time the Constitution was enacted, it's clear that the vast majority of people did not consider slaves or direct decedents of slaves as citizens. No subsequent amendment (until the 13th and 14th) changed this.
If you brought Taney and the rest who joined his opinion back from the dead, I bet we'd agree they'd all swear they made a decision based on what we now call originalism/textualism. Moreover, I think calling Taney's decision an example of 'living consitiutionalism' is absurd. He bent over backwards to explain why his decision was based on originalism.
