It appears, however, from what has taken place at the bar, that notwithstanding the language of the Constitution, and the long line of legislative and executive precedents under it, three different and opposite views are taken of the power of Congress respecting slavery in the Territories. One is, that though Congress can make a regulation prohibiting slavery in a Territory, they cannot make a regulation allowing it; another is, that it can neither be established nor prohibited by Congress, but that the people of a Territory, when organized by Congress, can establish or prohibit slavery; while the third is, that the Constitution itself secures to every citizen who holds slaves, under the laws of any State, the indefeasible right to carry them into any Territory, and there hold them as property. No particular clause of the Constitution has been referred to at the bar in support of either of these views. The first seems to be rested upon general considerations concerning the social and moral evils of slavery, its relations to republican Governments, its inconsistency with the Declaration of Independence and with natural right. The second is drawn from considerations equally general, concerning the right of self-government, and the nature of the political institutions which have been established by the people of the United States. While the third is said to rest upon the equal right of all citizens to go with their property upon the public domain, and the inequality of a regulation which would admit the property of some and exclude the property of other citizens; and, inasmuch as slaves are chiefly held by citizens of those particular States where slavery is established, it is insisted that a regulation excluding slavery from a Territory operates, practically, to make an unjust discrimination between citizens of different States, in respect to their use and enjoyment of the territory of the United States.