Just as well might Congress have said to those of the North, you shall not introduce into the territory south of said line your cattle or horses, as the country is already overstocked; nor can you introduce your tools of trade, or machines, as the policy of Congress is to encourage the culture of sugar and cotton south of the line, and so to provide that the Northern people shall manufacture for those of the South, and barter for the staple articles slave labor produces. And thus the Northern farmer and mechanic would be held out, as the slaveholder was for thirty years, by the Missouri restriction.

If Congress could prohibit one species of property, lawful throughout Louisiana when it was acquired, and lawful in the State from whence it was brought, so Congress might exclude any or all property.

The case before us will illustrate the construction contended for. Dr. Emerson was a citizen of Missouri; he had an equal right to go to the Territory with every citizen of other States. This is undeniable, as I suppose. Scott was Dr. Emerson's lawful property in Missouri; he carried his Missouri title with him; and the precise question here is, whether Congress had the power to annul that title. It is idle to say, that if Congress could not defeat the title directly, that it might be done indirectly, by drawing a narrow circle around the slave population of Upper Louisiana, and declaring that if the slave went beyond it, he should be free. Such assumption is mere evasion, and entitled to no consideration. And it is equally idle to contend, that because Congress has express power to regulate commerce among the Indian tribes, and to prohibit intercourse with the Indians, that therefore Dr. Emerson's title might be defeated within the country ceded by the Indians to the United States as early as 1805, and which embraces Fort Snelling. (Am. State Papers, vol. 1, p. 734.) We must meet the question, whether Congress had the power to declare that a citizen of a State, carrying with him his equal rights, secured to him through his State, could be stripped of his goods and slaves, and be deprived of any participation in the common property? If this be the true meaning of the Constitution, equality of rights to enjoy a common country (equal to a thousand miles square) may be cut off by a geographical line, and a great portion of our citizens excluded from it.

Ingenious, indirect evasions of the Constitution have been attempted and defeated heretofore. In the passenger cases, (7 How. R.,) the attempt was made to impose a tax on the masters, crews, and passengers of vessels, the Constitution having prohibited a tax on the vessel itself; but this court held the attempt to be a mere evasion, and pronounced the tax illegal.

I admit that Virginia could, and lawfully did, prohibit slavery northwest of the Ohio, by her charter of cession, and that the territory was taken by the United States with this condition imposed. I also admit that France could, by the treaty of 1803, have prohibited slavery in any part of the ceded territory, and imposed it on the United States as a fundamental condition of the cession, in the mean time, till new States were admitted in the Union.

I concur with Judge Baldwin, that Federal power is exercised over all the territory within the United States, pursuant to the Constitution; and, the conditions of the cession, whether it was a part of the original territory of a State of the Union, or of a foreign State, ceded by deed or treaty; the right of the United States in or over it depends on the contract of cession, which operates to incorporate as well the Territory as its inhabitants into the Union. (Baldwin's Constitutional Views, 84.)

My opinion is, that the third article of the treaty of 1803, ceding Louisiana to the United States, stands protected by the Constitution, and cannot be repealed by Congress.

And, secondly, that the act of 1820, known as the Missouri compromise, violates the most leading feature of the Constitution—a feature on which the Union depends, and which secures to the respective States and their citizens an entire equality of rights, privileges, and immunities.

On these grounds, I hold the compromise act to have been void; and, consequently, that the plaintiff, Scott, can claim no benefit under it.

For the reasons above stated, I concur with my brother judges that the plaintiff, Scott, is a slave, and was so when this suit was brought.