By the powers to govern, given by the Constitution, those amendments to the ordinance could be made, but Congress guardedly abstained from touching the compact of Virginia, further than to adapt it to the new Constitution. It is due to myself to say, that it is asking much of a judge, who has for nearly twenty years been exercising jurisdiction, from the western Missouri line to the Rocky Mountains, and, on this understanding of the Constitution, inflicting the extreme penalty of death for crimes committed where the direct legislation of Congress was the only rule, to agree that he had been all the while acting in mistake, and as an usurper. More than sixty years have passed away since Congress has exercised power to govern the Territories, by its legislation directly, or by Territorial charters, subject to repeal at all times, and it is now too late to call that power into question, if this court could disregard its own decisions; which it cannot do, as I think. It was held in the case of Cross _v._ Harrison, (16 How., 193-'4,) that the sovereignty of California was in the United States, in virtue of the Constitution, by which power had been given to Congress to dispose of and make all needful rules and regulations respecting the territory or other property belonging to the United States, with the power to admit new States into the Union. That decision followed preceding ones, there cited. The question was then presented, how it was possible for the judicial mind to conceive that the United States Government, created solely by the Constitution, could, by a lawful treaty, acquire territory over which the acquiring power had no jurisdiction to hold and govern it, by force of the instrument under whose authority the country was acquired; and the foregoing was the conclusion of this court on the proposition. What was there announced, was most deliberately done, and with a purpose. The only question here is, as I think, how far the power of Congress is limited. As to the Northwest Territory, Virginia had the right to abolish slavery there; and she did so agree in 1787, with the other States in the Congress of the Confederation, by assenting to and adopting the ordinance of 1787, for the government of the Northwest Territory. She did this also by an act of her Legislature, passed afterwards, which was a treaty in fact. Before the new Constitution was adopted, she had as much right to treat and agree as any European Government had. And, having excluded slavery, the new Government was bound by that engagement by article six of the new Constitution. This only meant that slavery should not exist whilst the United States exercised the power of government, in the Territorial form; for, when a new State came in, it might do so, with or without slavery.