Page:Joseph Story, Commentaries on the Constitution of the United States (1st ed, 1833, vol III).djvu/443

 CH. XXXVIII.] too for the people, the functions of the judiciary, in deciding on constitutional questions, is not one, which it is at liberty to decline. While it is bound not to take jurisdiction, if it should not, it is equally true, that it must take jurisdiction, if it should. It cannot, as the legislature may, avoid a measure, because it approaches the confines of the constitution. It cannot pass it by, because it is doubtful. With whatever doubt, with whatever difficulties a case may be attended, it must decide it, when it arises in judgment. It has no more right to decline the exercise of a jurisdiction, which is given, than to usurp that, which is not given. The one, or the other would be treason to the constitution.

§ 1571. The framers of the constitution, having these great principles in view, adopted two fundamental rules with entire unanimity; first, that a national judiciary ought to be established; secondly, that the national judiciary ought to possess powers co-extensive with