To convert this temporary stipulation of the treaty, in behalf of French subjects who then inhabited a small portion of Louisiana, into a permanent restriction upon the power of Congress to regulate territory then uninhabited, and to assert that it not only restrains Congress from affecting the rights of property of the then inhabitants, but enabled them and all other citizens of the United States to go into any part of the ceded territory with their slaves, and hold them there, is a construction of this treaty so opposed to its natural meaning, and so far beyond its subject-matter and the evident design of the parties, that I cannot assent to it. In my opinion, this treaty has no bearing on the present question. For these reasons, I am of opinion that so much of the several acts of Congress as prohibited slavery and involuntary servitude within that part of the Territory of Wisconsin lying north of thirty-six degrees thirty minutes north latitude, and west of the river Mississippi, were constitutional and valid laws. I have expressed my opinion, and the reasons therefor, at far greater length than I could have wished, upon the different questions on which I have found it necessary to pass, to arrive at a judgment on the case at bar. These questions are numerous, and the grave importance of some of them required me to exhibit fully the grounds of my opinion. I have touched no question which, in the view I have taken, it was not absolutely necessary for me to pass upon, to ascertain whether the judgment of the Circuit Court should stand or be reversed. I have avoided no question on which the validity of that judgment depends. To have done either more or less, would have been inconsistent with my views of my duty. In my opinion, the judgment of the Circuit Court should be reversed, and the cause remanded for a new trial.