In the case of Pennsylvania _v._ Wheeling & Belmont Bridge Co.,[343] decided in 1852, the Court, on the application of the complaining State, acting as representative of the interests of its citizens, granted an injunction requiring that a bridge, erected over the Ohio under a charter from the State of Virginia, either be altered so as to admit of free navigation of the river, or else be entirely abated. The decision was justified by the Court on the basis both of the commerce clause and of a compact between Virginia and Kentucky, whereby both these States had agreed to keep the Ohio River "free and common to the citizens of the United States." The injunction was promptly rendered inoperative by an act of Congress declaring the bridge to be "a lawful structure" and requiring all vessels navigating the Ohio to be so regulated as not to interfere with it.[344] This act the Court sustained as within Congress's power under the commerce clause, saying: "So far, * * *, as this bridge created an obstruction to the free navigation of the river, in view of the previous acts of Congress, they [the said acts] are to be regarded as modified by this subsequent legislation; and, although it still may be an obstruction in fact, [it] is not so in the contemplation of law. * * * That body [Congress] having in the exercise of this power, regulated the navigation consistent with its preservation and continuation, the authority to maintain it would seem to be complete. That authority combines the concurrent powers of both governments, State and federal, which, if not sufficient, certainly none can be found in our system of government."[345] In short, it is Congress and not the Court which is authorized by the Constitution to regulate commerce. The law and doctrine of the earlier cases with respect to the fostering and protection of navigation are well summed up in the following frequently cited passage from the Court's opinion in Gilman _v._ Philadelphia,[346] decided in 1866. "Commerce includes navigation. The power to regulate commerce comprehends the control for that purpose, and to the extent necessary, of all the navigable waters of the United States which are accessible from a State other than those in which they lie. For this purpose they are the public property of the nation, and subject to all requisite legislation by Congress. This necessarily includes the power to keep them open and free from any obstruction to their navigation, interposed by the States or otherwise; to remove such obstructions when they exist; and to provide, by such sanctions as they may deem proper, against the occurrence of the evil and for the punishment of offenders. For these purposes, Congress possesses all the powers which existed in the States before the adoption of the national Constitution, and which have always existed in the Parliament in England."[347]