But it is also insisted that provisions of the Constitution respecting territory belonging to the United States do not apply to territory acquired by treaty from a foreign nation. This objection must rest upon the position that the Constitution did not authorize the Federal Government to acquire foreign territory, and consequently has made no provision for its government when acquired; or, that though the acquisition of foreign territory was contemplated by the Constitution, its provisions concerning the admission of new States, and the making of all needful rules and regulations respecting territory belonging to the United States, were not designed to be applicable to territory acquired from foreign nations.

It is undoubtedly true, that at the date of the treaty of 1803, between the United States and France, for the cession of Louisiana, it was made a question, whether the Constitution had conferred on the executive department of the Government of the United States power to acquire foreign territory by a treaty.

There is evidence that very grave doubts were then entertained concerning the existence of this power. But that there was then a settled opinion in the executive and legislative branches of the Government, that this power did not exist, cannot be admitted, without at the same time imputing to those who negotiated and ratified the treaty, and passed the laws necessary to carry it into execution, a deliberate and known violation of their oaths to support the Constitution; and whatever doubts may then have existed, the question must now be taken to have been settled. Four distinct acquisitions of foreign territory have been made by as many different treaties, under as many different Administrations. Six States, formed on such territory, are now in the Union. Every branch of this Government, during a period of more than fifty years, has participated in these transactions. To question their validity now, is vain. As was said by Mr. Chief Justice Marshall, in the American Insurance Company v. Canter, (1 Peters, 542,) "the Constitution confers absolutely on the Government of the Union the powers of making war and of making treaties; consequently, that Government possesses the power of acquiring territory, either by conquest or treaty." (See Cerré v. Pitot, 6 Cr., 336.) And I add, it also possesses the power of governing it, when acquired, not by resorting to supposititious powers, nowhere found described in the Constitution, but expressly granted in the authority to make all needful rules and regulations respecting the territory of the United States.

There was to be established by the Constitution a frame of government, under which the people of the United States and their posterity were to continue indefinitely. To take one of its provisions, the language of which is broad enough to extend throughout the existence of the Government, and embrace all territory belonging to the United States throughout all time, and the purposes and objects of which apply to all territory of the United States, and narrow it down to territory belonging to the United States when the Constitution was framed, while at the same time it is admitted that the Constitution contemplated and authorized the acquisition, from time to time, of other and foreign territory, seems to me to be an interpretation as inconsistent with the nature and purposes of the instrument, as it is with its language, and I can have no hesitation in rejecting it.

I construe this clause, therefore, as if it had read, Congress shall have power to make all needful rules and regulations respecting those tracts of country, out of the limits of the several States, which the United States have acquired, or may hereafter acquire, by cessions, as well of the jurisdiction as of the soil, so far as the soil may be the property of the party making the cession, at the time of making it.

It has been urged that the words "rules and regulations" are not appropriate terms in which to convey authority to make laws for the government of the territory.

But it must be remembered that this is a grant of power to the Congress—that it is therefore necessarily a grant of power to legislate—and, certainly, rules and regulations respecting a particular subject, made by the legislative power of a country, can be nothing but laws. Nor do the particular terms employed, in my judgment, tend in any degree to restrict this legislative power. Power granted to a Legislature to make all needful rules and regulations respecting the territory, is a power to pass all needful laws respecting it.

The word regulate, or regulation, is several times used in the Constitution. It is used in the fourth section of the first article to describe those laws of the States which prescribe the times, places, and manner, of choosing Senators and Representatives; in the second section of the fourth article, to designate the legislative action of a State on the subject of fugitives from service, having a very close relation to the matter of our present inquiry; in the second section of the third article, to empower Congress to fix the extent of the appellate jurisdiction of this court; and, finally, in the eighth section of the first article are the words, "Congress shall have power to regulate commerce."

It is unnecessary to describe the body of legislation which has been enacted under this grant of power; its variety and extent are well known. But it may be mentioned, in passing, that under this power to regulate commerce, Congress has enacted a great system of municipal laws, and extended it over the vessels and crews of the United States on the high seas and in foreign ports, and even over citizens of the United States resident in China; and has established judicatures, with power to inflict even capital punishment within that country.

If, then, this clause does contain a power to legislate respecting the territory, what are the limits of that power?