Before I proceed further to notice some other grounds of supposed objection to this power of Congress, I desire to say, that if it were not for my anxiety to insist upon what I deem a correct exposition of the Constitution, if I looked only to the purposes of the argument, the source of the power of Congress asserted in the opinion of the majority of the court would answer those purposes equally well. For they admit that Congress has power to organize and govern the Territories until they arrive at a suitable condition for admission to the Union; they admit, also, that the kind of Government which shall thus exist should be regulated by the condition and wants of each Territory, and that it is necessarily committed to the discretion of Congress to enact such laws for that purpose as that discretion may dictate; and no limit to that discretion has been shown, or even suggested, save those positive prohibitions to legislate, which are found in the Constitution. I confess myself unable to perceive any difference whatever between my own opinion of the general extent of the power of Congress and the opinion of the majority of the court, save that I consider it derivable from the express language of the Constitution, while they hold it to be silently implied from the power to acquire territory. Looking at the power of Congress over the Territories as of the extent just described, what positive prohibition exists in the Constitution, which restrained Congress from enacting a law in 1820 to prohibit slavery north of thirty-six degrees thirty minutes north latitude? The only one suggested is that clause in the fifth article of the amendments of the Constitution which declares that no person shall be deprived of his life, liberty, or property, without due process of law. I will now proceed to examine the question, whether this clause is entitled to the effect thus attributed to it. It is necessary, first, to have a clear view of the nature and incidents of that particular species of property which is now in question.