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.