This mode of reasoning appears sometimes to turn upon the supposition of usurpation in the national government; at other times it seems to be designed only as a deduction from the constitutional operation of its intended powers. It is only in the latter light that it can be admitted to have any pretensions to fairness. The moment we launch into conjectures about the usurpations of the federal government, we get into an unfathomable abyss, and fairly put ourselves out of the reach of all reasoning. Imagination may range at pleasure till it gets bewildered amidst the labyrinths of an enchanted castle, and knows not on which side to turn to extricate itself from the perplexities into which it has so rashly adventured. Whatever may be the limits or modifications of the powers of the Union, it is easy to imagine an endless train of possible dangers; and by indulging an excess of jealousy and timidity, we may bring ourselves to a state of absolute scepticism and irresolution. I repeat here what I have observed in substance in another place, that all observations founded upon the danger of usurpation ought to be referred to the composition and structure of the government, not to the nature or extent of its powers. The State governments, by their original constitutions, are invested with complete sovereignty. In what does our security consist against usurpation from that quarter? Doubtless in the manner of their formation, and in a due dependence of those who are to administer them upon the people. If the proposed construction of the federal government be found, upon an impartial examination of it, to be such as to afford, to a proper extent, the same species of security, all apprehensions on the score of usurpation ought to be discarded.