The nearest approach to the point of declaring the power of a State over slavery, is made by Judge Nelson. He approaches it more than once, using the precise idea, and almost the language, too, of the Nebraska Act. On one occasion, his exact language is, "Except in cases where the power is restrained by the Constitution of the United States, the law of the State is supreme over the subject of slavery within its jurisdiction." In what cases the power of the States is so restrained by the United States Constitution is left an open question, precisely as the same question, as to the restraint on the power of the Territories, was left open in the Nebraska Act. Put this and that together, and we have another nice little niche, which we may, ere long, see filled with another Supreme Court decision, declaring that the Constitution of the United States does not permit a _State_ to exclude slavery from its limits. And this may especially be expected if the doctrine of "care not whether slavery be voted down or voted up" shall gain upon the public mind sufficiently to give promise that such a decision can be maintained when made. Such a decision is all that slavery now lacks of being alike lawful in all the States. Welcome or unwelcome, such decision is probably coming, and will soon be upon us, unless the power of the present political dynasty shall be met and overthrown. We shall lie down pleasantly dreaming that the people of Missouri are on the verge of making their State free, and we shall awake to the reality instead that the Supreme Court has made Illinois a slave State. To meet and overthrow the power of that dynasty is the work now before all who would prevent that consummation. That is what we have to do. How can we best do it?