But, as we have already had occasion to see, the idea of vesting in the judicial department such control over the legislation of the separate States as might be surrendered by them to the national government, was not yet propounded. The principle which was to ascertain the extent of that control was already introduced and acted upon, namely, that it should embrace all laws of the States which might conflict with the Constitution, or the treaties made under the national authority. The plan at present was, as we have seen, to treat this as a legislative power, to be executed by the direct control of a negative. But a nearer view of the great inconveniences of such an arrangement, and the general basis of the jurisdiction already marked out for the national judiciary, led to the development of the particular feature which was required as a substitute for direct interference with the legislative powers of the States. In truth, the important principle which proposed to extend the judicial authority to questions involving the national peace and harmony, embraced all the power that was required; and it only remained to be seen that the exercise of that power by the indirect effect of judicial action on the laws of the States after they had been passed, was far preferable to a direct interference with those laws while in the process of enactment.
The committee, with complete unanimity, determined that the judges of the supreme tribunal should hold their offices during good behavior.[39] This tenure of office was taken from the English statutes, and from the constitutions of some of the States which had already adopted it. The commissions of the judges in England, until the year 1700, were prescribed by the crown; and although they were sometimes issued to be held during good behavior, they were generally issued during the pleasure of the crown, and it was always optional with the crown to adopt the one or the other tenure, as it saw fit. But in the statute passed in the thirteenth year of the reign of William III., which finally secured the ascendency of the Protestant religion in that country, and made other provisions for the rights and liberties of the subject, it was enacted that judges' commissions should be made during good behavior, and that their salaries should be ascertained and established; but it was made lawful for the crown to remove them upon the address of both houses of Parliament.[40] Still, however, it was always considered that the commissions of the judges expired on the death of the king; and for the purpose of preventing this, and in order to make the judges more effectually independent, a new statute, passed in the first year of the reign of George III., declared that the commissions of the judges should continue in force during their good behavior, notwithstanding the demise of the crown; and that such salaries as had been once granted to them should be paid in all future time, so long as their commissions should remain in force. The provision which made them removable by the crown on the address of both houses of Parliament was retained and re-enacted.[41]