Elucidating this word in his opinion for the Court in Gibbons v. Ogden, Chief Justice Marshall said: "We are now arrived at the inquiry—What is this power? It is the power to regulate; that is, to prescribe the rule by which commerce is to be governed. This power, like all others vested in Congress, is complete in itself, may be exercised to its utmost extent, and acknowledges no limitations, other than are prescribed in the Constitution. These are expressed in plain terms, and do not affect the questions which arise in this case, or which have been discussed at the bar. If, as has always been understood, the sovereignty of Congress, though limited to specified objects, is plenary as to those objects, the power over commerce with foreign nations, and among the several States, is vested in Congress as absolutely as it would be in a single government, having in its constitution the same restrictions on the exercise of the power as are found in the Constitution of the United States. The wisdom and the discretion of Congress, their identity with the people, and the influence which their constituents possess at elections, are, in this, as in many other instances, as that, for example, of declaring war, the sole restraints on which they have relied, to secure them from its abuse. They are the restraints on which the people must often rely solely, in all representative governments."[329]
INTERSTATE VERSUS FOREIGN COMMERCE
There are certain later judicial dicta which urge or suggest that Congress's power to regulate interstate commerce restrictively is less than its analogous power over foreign commerce, the argument being that whereas the latter is a branch of the nation's unlimited power over foreign relations, the former was conferred upon the National Government primarily in order to protect freedom of commerce from State interference. The four dissenting Justices in the Lottery Case (decided in 1903) endorsed this view in the following words: "It is argued that the power to regulate commerce among the several States is the same as the power to regulate commerce with foreign nations, and among the Indian tribes. But is its scope the same? * * *, the power to regulate commerce with foreign nations and the power to regulate interstate commerce, are to be taken diverso intuitu, for the latter was intended to secure equality and freedom in commercial intercourse as between the States, not to permit the creation of impediments to such intercourse; while the former clothes Congress with that power over international commerce, pertaining to a sovereign nation in its intercourse with foreign nations, and subject, generally speaking, to no implied or reserved power in the States. The laws which would be necessary and proper in the one case, would not be necessary or proper in the other. * * * But that does not challenge the legislative power of a sovereign nation to exclude foreign persons or commodities, or place an embargo, perhaps not permanent, upon foreign ships or manufactures. * * * The same view must be taken as to commerce with Indian tribes. There is no reservation of police powers or any other to a foreign nation or to an Indian tribe, and the scope of the power is not the same as that over interstate commerce."[330]
And twelve years later Chief Justice White, speaking for the Court, expressed the same view, as follows: "In the argument reference is made to decisions of this court dealing with the subject of the power of Congress to regulate interstate commerce, but the very postulate upon which the authority of Congress to absolutely prohibit foreign importations as expounded by the decisions of this court rests is the broad distinction which exists between the two powers and therefore the cases cited and many more which might be cited announcing the principles which they uphold have obviously no relation to the question in hand."[331]
But dicta to the contrary are much more numerous and span a far longer period of time. Thus Chief Justice Taney wrote in 1847: "The power to regulate commerce among the several States is granted to Congress in the same clause, and by the same words, as the power to regulate commerce with foreign nations, and is coextensive with it."[332] And nearly fifty years later Justice Field, speaking for the Court, said: "The power to regulate commerce among the several States was granted to Congress in terms as absolute as is the power to regulate commerce with foreign nations."[333] Today it is firmly established doctrine that the power to regulate commerce, whether with foreign nations or among the several States comprises the power to restrain or prohibit it at all times for the welfare of the public, provided only the specific limitations imposed upon Congress's powers, as by the due process clause of the Fifth Amendment, are not transgressed.[334]
Nor does the power to regulate commerce stop with, nor in fact is it most commonly exercised in, measures designed to outlaw some branch of commerce. In the words of the Court: It is the power to provide by appropriate legislation for its "protection and advancement";[335] to adopt measures "to promote its growth and insure its safety";[336] "to foster, protect, control and restrain, [commerce]."[337] This protective power has, moreover, two dimensions. In the first place, it includes the power to reach and remove every conceivable obstacle to or restriction upon interstate and foreign commerce from whatever source arising, whether it results from unfavorable conditions within the States or from State legislative policy, like the monopoly involved in Gibbons v. Ogden; or from both combined. In the second place, it extends—as does also the power to restrain commerce—to the instruments and agents by which commerce is carried on; nor are such instruments and agents confined to those which were known or in use when the Constitution was adopted.[338]
The applicability of Congress's power to the agents and instruments of commerce is implied in Marshall's opinion in Gibbons v. Ogden,[339] where the waters of the State of New York in their quality as highways of interstate and foreign transportation are held to be governed by the overruling power of Congress. Likewise, the same opinion recognizes that in "the progress of things," new and other instruments of commerce will make their appearance. When the Licensing Act of 1793 was passed, the only craft to which it could apply were sailing vessels, but it and the power by which it was enacted were, Marshall asserted, indifferent to the "principle" by which vessels were moved. Its provisions therefore reached steam vessels as well. A little over half a century later the principle embodied in this holding was given its classic expression in the opinion of Chief Justice Waite in the case of the Pensacola Telegraph Co. v. Western Union Co.,[340] a case closely paralleling Gibbons v. Ogden in other respects also. The passage alluded to reads as follows: "The powers thus granted are not confined to the instrumentalities of commerce, or the postal service known or in use when the Constitution was adopted, but they keep pace with the progress of the country, and adapt themselves to the new developments of times and circumstances. They extend from the horse with its rider to the stage-coach, from the sailing-vessel to the steamboat, from the coach and the steamboat to the railroad, and from the railroad to the telegraph, as these new agencies are successively brought into use to meet the demands of increasing population and wealth. They were intended for the government of the business to which they relate, at all times and under all circumstances. As they were intrusted to the general government for the good of the nation, it is not only the right, but the duty, of Congress to see to it that intercourse among the States and the transmission of intelligence are not obstructed or unnecessarily encumbered by State legislation."[341] The Radio Act of 1927 whereby "all forms of interstate and foreign radio transmissions within the United States, its Territories and possessions" were brought under national control, affords another illustration. Thanks to the foregoing doctrine the measure met no serious constitutional challenge either on the floors of Congress or in the Courts.[342]
Congressional Regulation of Waterways