In the case of the United States v. De Witt, we held unanimously that a provision of the internal revenue law prohibiting the sale of certain illuminating oil in the states was unconstitutional, though it might increase the production and sale of other oils, and consequently the revenue derived from them, because this consequence was too remote and uncertain to warrant the court in saying that the prohibition was an appropriate and plainly adapted means for carrying into execution the power to lay and collect taxes.
We agree, then, that the question whether a law is a necessary and proper means to execution of an express power, within the meaning of these words as defined by the rule—that is to say, a means appropriate, plainly adapted, not prohibited but consistent with the letter and spirit of the constitution—is a judicial question. Congress may not adopt any means for the execution of an express power that congress may see fit to adopt. It must be a necessary and proper means within the fair meaning of the rule. If not such it cannot be employed consistently with the constitution. Whether the means actually employed in a given case are such or not the court must decide. The court must judge of the fact, congress of the degree of necessity.
A majority of the court, five to four, in the opinion which has just been read, reverses the judgment rendered by the former majority of five to three, in pursuance of an opinion formed after repeated arguments, at successive terms, and careful consideration; and declares the legal tender clause to be constitutional; that is to say, that an act of congress making promises to pay dollars legal tender as coined dollars in payment of pre-existing debts is a means appropriate and plainly adapted to the exercise of powers expressly granted by the constitution, and not prohibited itself by the constitution but consistent with its letter and spirit. And this reversal, unprecedented in the history of the court, has been produced by no change in the opinions of those who concurred in the former judgment. One closed an honorable judicial career by resignation after the case had been decided, after the opinion had been read and agreed to in conference, and after the day when it would have been delivered in court, had not the delivery been postponed for a week to give time for the preparation of the dissenting opinion. The court was then full, but the vacancy caused by the resignation of Mr. Justice Grier having been subsequently filled and an additional justice having been appointed under the act increasing the number of judges to nine, which took effect on the first Monday of December, 1869, the then majority find themselves in a minority of the court, as now constituted, upon the question.
Their convictions, however, remain unchanged. We adhere to the opinion pronounced in Hepburn v. Griswold. Reflection has only wrought a firmer belief in the soundness of the constitutional doctrines maintained, and in the importance of them to the country.
We agree that much of what was said in the dissenting opinion in that case, which has become the opinion of a majority of the court as now constituted, was correctly said. We fully agree in all that was quoted from Chief Justice Marshall. We had indeed accepted, without reserve, the definition of implied powers in which that great judge summed up his argument, of which the language quoted formed a part. But if it was intended to ascribe to us "the doctrine that when an act of congress is brought to the test of this clause of the constitution," namely, the clause granting the power of ancillary legislation, "its necessity must be absolute, and its adaptation to the conceded purpose unquestionable," we must be permitted not only to disclaim it, but to say that there is nothing in the opinion of the then majority which approaches the assertion of any such doctrine. We did indeed venture to cite, with approval, the language of Judge Story in his great work on the constitution, that the words necessary and proper were intended to have "a sense at once admonitory and directory," and to require that the means used in the execution of an express power "should be bona fide, appropriate to the end," and also ventured to say that the tenth amendment, reserving to the states or the people all powers not delegated to the United States by the constitution, nor prohibited by it to the states, "was intended to have a like admonitory and directory sense," and to restrain the limited government established by the constitution from the exercise of powers not clearly delegated or derived by just inference from powers so delegated. In thus quoting Judge Story, and in this expression of our own opinion, we certainly did not suppose it possible that we could be understood as asserting that the clause in question "was designed as a restriction upon the ancillary power incidental to every grant of power in express terms." It was this proposition which "was stated and refuted" in McCulloch v. Maryland. That refutation touches nothing said by us. We assert only that the words of the constitution are such as admonish congress that implied powers are not to be rashly or lightly assumed, and that they are not to be exercised at all, unless, in the words of Judge Story, they are "bona fide appropriate to the end," or, in the words of Chief Justice Marshall, "appropriate, plainly adapted" to a constitutional and legitimate end, and "not prohibited, but consistent with the letter and spirit of the constitution."
There appears, therefore, to have been no real difference of opinion in the court as to the rule by which the existence of an implied power is to be tested, when Hepburn v. Griswold was decided, though the then minority seem to have supposed there was. The difference had reference to the application of the rule rather than to the rule itself.
The then minority admitted that in the powers relating to coinage, standing alone, there is not "a sufficient warrant for the exercise of the power" to make notes a legal tender, but thought them "not without decided weight, when we come to consider the question of the existence of this power as one necessary and proper for carrying into execution other admitted powers of the government." This weight they found in the fact that an "express power over the lawful money of the country was confided to congress and forbidden to the states." It seemed to them not an "unreasonable inference" that, in a certain contingency, "making the securities of the government perform the office of money in the payment of debts would be in harmony with the power expressly granted to coin money." We perceive no connection between the express power to coin money and the inference that the government may, in any contingency, make its securities perform the functions of coined money, as a legal tender in payment of debts. We have supposed that the power to exclude from circulation notes not authorized by the national government might, perhaps, be deduced from the power to regulate the value of coin; but that the power of the government to emit bills of credit was an exercise of the power to borrow money, and that its power over the currency was incidental to that power and to the power to regulate commerce. This was the doctrine of the Veazie Bank v. Fenno, although not fully elaborated in that case. The question whether the quality of legal tender can be imparted to these bills depends upon distinct considerations.
Was, then, the power to make these notes of the government—these bills of credit—a legal tender in payments an appropriate, plainly adapted means to a legitimate and constitutional end? or, to state the question as the opinion of the then minority stated it, "Does there exist any power in congress, or in the government, by express grant, in execution of which this legal tender act was necessary and proper in the sense here defined and under the circumstances of its passage?"
The opinion of the then minority affirmed the power on the ground that it was a necessary and proper means, within the definition of the court, in the case of McCulloch v. Maryland, to carry on war, and that it was not prohibited by the spirit or letter of the constitution, though it was admitted to be a law impairing the obligation of contracts, and notwithstanding the objection that it deprived many persons of their property without compensation and without due process of law.
We shall not add much to what was said in the opinion of the then majority on these points.