That the Constitution itself has defined citizenship of the United States by declaring what persons, born within the several States, shall or shall not be citizens of the United States, will not be pretended. It contains no such declaration. We may dismiss the first alternative, as without doubt unfounded.
Has it empowered Congress to enact what free persons, born within the several States, shall or shall not be citizens of the United States?
Before examining the various provisions of the Constitution which may relate to this question, it is important to consider for a moment the substantial nature of this inquiry. It is, in effect, whether the Constitution has empowered Congress to create privileged classes within the States, who alone can be entitled to the franchises and powers of citizenship of the United States. If it be admitted that the Constitution has enabled Congress to declare what free persons, born within the several States, shall be citizens of the United States, it must at the same time be admitted that it is an unlimited power. If this subject is within the control of Congress, it must depend wholly on its discretion. For, certainly, no limits of that discretion can be found in the Constitution, which is wholly silent concerning it; and the necessary consequence is, that the Federal Government may select classes of persons within the several States who alone can be entitled to the political privileges of citizenship of the United States. If this power exists, what persons born within the States may be President or Vice President of the United States, or members of either House of Congress, or hold any office or enjoy any privilege whereof citizenship of the United States is a necessary qualification, must depend solely on the will of Congress. By virtue of it, though Congress can grant no title of nobility, they may create an oligarchy, in whose hands would be concentrated the entire power of the Federal Government.
It is a substantive power, distinct in its nature from all others; capable of affecting not only the relations of the States to the General Government, but of controlling the political condition of the people of the United States. Certainly we ought to find this power granted by the Constitution, at least by some necessary inference, before we can say it does not remain to the States or the people. I proceed therefore to examine all the provisions of the Constitution which may have some bearing on this subject.
Among the powers expressly granted to Congress is "the power to establish a uniform rule of naturalization." It is not doubted that this is a power to prescribe a rule for the removal of the disabilities consequent on foreign birth. To hold that it extends further than this, would do violence to the meaning of the term naturalization, fixed in the common law, (Co. Lit., 8 a, 129 a; 2 Ves., sen., 286; 2 Bl. Com., 293,) and in the minds of those who concurred in framing and adopting the Constitution. It was in this sense of conferring on an alien and his issue the rights and powers of a native-born citizen, that it was employed in the Declaration of Independence. It was in this sense it was expounded in the Federalist, (No. 42,) has been understood by Congress, by the Judiciary, (2 Wheat., 259, 269; 3 Wash. R., 313, 322; 12 Wheat., 277,) and by commentators on the Constitution. (3 Story's Com. on Con., 1-3; 1 Rawle on Con., 84-88; 1 Tucker's Bl. Com. App., 255-259.)
It appears, then, that the only power expressly granted to Congress to legislate concerning citizenship, is confined to the removal of the disabilities of foreign birth.
Whether there be anything in the Constitution from which a broader power may be implied, will best be seen when we come to examine the two other alternatives, which are, whether all free persons, born on the soil of the several States, or only such of them as may be citizens of each State, respectively, are thereby citizens of the United States. The last of these alternatives, in my judgment, contains the truth.
Undoubtedly, as has already been said, it is a principle of public law, recognised by the Constitution itself, that birth on the soil of a country both creates the duties and confers the rights of citizenship. But it must be remembered, that though the Constitution was to form a Government, and under it the United States of America were to be one united sovereign nation, to which loyalty and obedience on the one side, and from which protection and privileges on the other, would be due, yet the several sovereign States, whose people were then citizens, were not only to continue in existence, but with powers unimpaired, except so far as they were granted by the people to the National Government.
Among the powers unquestionably possessed by the several States, was that of determining what persons should and what persons should not be citizens. It was practicable to confer on the Government of the Union this entire power. It embraced what may, well enough for the purpose now in view, be divided into three parts. First: The power to remove the disabilities of alienage, either by special acts in reference to each individual case, or by establishing a rule of naturalization to be administered and applied by the courts. Second: Determining what persons should enjoy the privileges of citizenship, in respect to the internal affairs of the several States. Third: What native-born persons should be citizens of the United States.
The first-named power, that of establishing a uniform rule of naturalization, was granted; and here the grant, according to its terms, stopped. Construing a Constitution containing only limited and defined powers of government, the argument derived from this definite and restricted power to establish a rule of naturalization, must be admitted to be exceedingly strong. I do not say it is necessarily decisive. It might be controlled by other parts of the Constitution. But when this particular subject of citizenship was under consideration, and, in the clause specially intended to define the extent of power concerning it, we find a particular part of this entire power separated from the residue, and conferred on the General Government, there arises a strong presumption that this is all which is granted, and that the residue is left to the States and to the people. And this presumption is, in my opinion, converted into a certainty, by an examination of all such other clauses of the Constitution as touch this subject.