To this Judge Douglas answered that they can lawfully exclude slavery from the Territory prior to the formation of a constitution. He goes on to tell us how it can be done. As I understand him, he holds that it can be done by the Territorial Legislature refusing to make any enactments for the protection of slavery in the Territory, and especially by adopting unfriendly legislation to it. For the sake of clearness, I state it again: that they can exclude slavery from the Territory, 1st, by withholding what he assumes to be an indispensable assistance to it in the way of legislation; and, 2d, by unfriendly legislation. If I rightly understand him, I wish to ask your attention for a while to his position. In the first place, the Supreme Court of the United States has decided that any Congressional prohibition of slavery in the Territories is unconstitutional; that they have reached this proposition as a conclusion from their former proposition, that the Constitution of the United States expressly recognizes property in slaves, and from that other Constitutional provision, that no person shall be deprived of property without due process of law. Hence they reach the conclusion that as the Constitution of the United States expressly recognizes property in slaves, and prohibits any person from being deprived of property without due process of law, to pass an Act of Congress by which a man who owned a slave on one side of a line would be deprived of him if he took him on the other side, is depriving him of that property without due process of law. That I understand to be the decision of the Supreme Court. I understand also that Judge Douglas adheres most firmly to that decision; and the difficulty is, how is it possible for any power to exclude slavery from the Territory, unless in violation of that decision? That is the difficulty.