But in considering the question before us, it must be borne in mind that there is no law of nations standing between the people of the United States and their Government, and interfering with their relation to each other. The powers of the Government, and the rights of the citizen under it, are positive and practical regulations plainly written down. The people of the United States have delegated to it certain enumerated powers, and forbidden it to exercise others. It has no power over the person or property of a citizen but what the citizens of the United States have granted. And no laws or usages of other nations, or reasoning of statesmen or jurists upon the relations of master and slave, can enlarge the powers of the Government, or take from the citizens the rights they have reserved. And if the Constitution recognises the right of property of the master in a slave, and makes no distinction between that description of property and other property owned by a citizen, no tribunal, acting under the authority of the United States, whether it be legislative, executive, or judicial, has a right to draw such a distinction, or deny to it the benefit of the provisions and guarantees which have been provided for the protection of private property against the encroachments of the Government. Now, as we have already said in an earlier part of this opinion, upon a different point, the right of property in a slave is distinctly and expressly affirmed in the Constitution. The right to traffic in it, like an ordinary article of merchandise and property, was guarantied to the citizens of the United States, in every State that might desire it, for twenty years. And the Government in express terms is pledged to protect it in all future time, if the slave escapes from his owner. This is done in plain words--too plain to be misunderstood. And no word can be found in the Constitution which gives Congress a greater power over slave property, or which entitles property of that kind to less protection than property of any other description. The only power conferred is the power coupled with the duty of guarding and protecting the owner in his rights. Upon these considerations, it is the opinion of the court that the act of Congress which prohibited a citizen from holding and owning property of this kind in the territory of the United States north of the line therein mentioned, is not warranted by the Constitution, and is therefore void; and that neither Dred Scott himself, nor any of his family, were made free by being carried into this territory; even if they had been carried there by the owner, with the intention of becoming a permanent resident. We have so far examined the case, as it stands under the Constitution of the United States, and the powers thereby delegated to the Federal Government.