The reference made in the opinion just read, as well as in the argument at the bar, to the opinions of the chief justice, when secretary of the treasury, seems to warrant, if it does not require, some observations before proceeding further in the discussion.

It was his fortune at the time the legal tender clause was inserted in the bill to authorize the issue of United States notes and received the sanction of congress, to be charged with the anxious and responsible duty of providing funds for the prosecution of the war. In no report made by him to congress was the expedient of making the notes of the United States a legal tender suggested. He urged the issue of notes payable on demand in coin or received as coin in payment of duties. When the state banks had suspended specie payments, he recommended the issue of United States notes receivable for all loans to the United States and all government dues except duties on imports. In his report of December, 1862, he said that "United States notes receivable for bonds bearing a secure specie interest are next best to notes convertible into coin," and after stating the financial measures which in his judgment were advisable, he added: "The secretary recommends, therefore, no mere paper money scheme, but on the contrary a series of measures looking to a safe and gradual return to gold and silver as the only permanent basis, standard, and measure of value recognized by the constitution." At the session of congress before this report was made, the bill containing the legal tender clause had become a law. He was extremely and avowedly averse to this clause, but was very solicitous for the passage of the bill to authorize the issue of United States notes then pending. He thought it indispensably necessary that the authority to issue these notes should be granted by congress. The passage of the bill was delayed, if not jeoparded, by the difference of opinion which prevailed on the question of making them a legal tender. It was under these circumstances that he expressed the opinion, when called upon by the committee of ways and means, that it was necessary; and he was not sorry to find it sustained by the decisions of respected courts, not unanimous indeed, nor without contrary decisions of state courts equally respectable. Examination and reflection under more propitious circumstances have satisfied him that this opinion was erroneous, and he does not hesitate to declare it. He would do so, just as unhesitatingly, if his favor to the legal tender clause had been at that time decided, and his opinion as to the constitutionality of the measure clear.

Was the making of the notes a legal tender necessary to the carrying on the war? In other words, was it necessary to the execution of the power to borrow money? It is not the question whether the issue of notes was necessary, nor whether any of the financial measures of the government were necessary. The issuing of the circulation commonly known as greenbacks was necessary, and was constitutional. They were necessary to the payment of the army and the navy and to all the purposes for which the government uses money. The banks had suspended specie payment, and the government was reduced to the alternative of using their paper or issuing its own.

Now it is a common error, and in our judgment it was the error of the opinion of the minority in Hepburn v. Griswold, and is the error of the opinion just read, that considerations pertinent to the issue of United States notes have been urged in justification of making them a legal tender. The real question is, Was the making them a legal tender a necessary means to the execution of the power to borrow money? If the notes would circulate as well without as with this quality it is idle to urge the plea of such necessity. But the circulation of the notes was amply provided for by making them receivable for all national taxes, all dues to the government, and all loans. This was the provision relied upon for the purpose by the secretary when the bill was first prepared, and his reflections since have convinced him that it was sufficient. Nobody could pay a tax, or any debt, or buy a bond without using these notes. As the notes, not being immediately redeemable, would undoubtedly be cheaper than coin, they would be preferred by debtors and purchasers. They would thus, by the universal law of trade, pass into general circulation. As long as they were maintained by the government at or near par value of specie they would be accepted in payment of all dues, private as well as public. Debtors, as a general rule, would pay in nothing else unless compelled by suit, and creditors would accept them as long as they would lose less by acceptance than by suit. In new transactions, sellers would demand and purchasers would pay the premium for specie in the prices of commodities. The difference to them, in the currency, whether of coin or of paper, would be in the fluctuations to which the latter is subject. So long as notes should not sink so low as to induce creditors to refuse to receive them because they could not be said to be in any just sense payments of debts due, a provision for making them a legal tender would be without effect except to discredit the currency to which it was applied. The real support of note circulation not convertible on demand into coin, is receivability for debts due the government, including specie loans, and limitation of amount. If the amount is smaller than is needed for the transactions of the country, and the law allows the use in these transactions of but one description of currency, the demand for that description will prevent its depreciation. But history shows no instance of paper issues so restricted. An approximation in limitation is all that is possible, and this was attempted when the issues of United States notes were restricted to one hundred and fifty millions. But this limit was soon extended to four hundred and fifty millions, and even this was soon practically removed by the provision for the issue of notes by the national banking associations without any provision for corresponding reduction in the circulation of United States notes; and still further by the laws authorizing the issue of interest-bearing securities, made a tender for their amount, excluding interest.

The best support for note circulation is not limitation, but receivability, especially for loans bearing coin interest. This support was given until the fall of 1864, when a loan bearing increased currency interest, payable in three years and convertible into a loan bearing less coin interest, was substituted for the six per cent and five per cent loans bearing specie interest, for which the notes had been previously received.

It is plain that a currency so supported cannot depreciate more than the loans; in other words, below the general credit of the country. It will rise or fall with it. At the present moment, if the notes were received for five per cent bonds, they would be at par. In other words, specie payments would be resumed.

Now, does making the notes a legal tender increase their value? It is said that it does, by giving them a new use. The best political economists say that it does not. When the government compels the people to receive its notes, it virtually declares that it does not expect them to be received without compulsion. It practically represents itself insolvent. This certainly does not improve the value of its notes. It is an element of depreciation. In addition, it creates a powerful interest in the debtor class and in the purchasers of bonds to depress to the lowest point the credit of the notes. The cheaper these become, the easier the payment of debts, and the more profitable the investments in bonds bearing coin interest.

On the other hand, the higher prices become, for everything the government needs to buy, and the greater the accumulation of public as well as private debt. It is true that such a state of things is acceptable to debtors, investors in bonds, and speculators. It is their opportunity of relief or wealth. And many are persuaded by their representations that the forced circulation is not only a necessity but a benefit. But the apparent benefit is a delusion and the necessity imaginary. In their legitimate use, the notes are hurt not helped by being made a legal tender. The legal tender quality is only valuable for the purposes of dishonesty. Every honest purpose is answered as well and better without it.

We have no hesitation, therefor, in declaring our conviction that the making of these notes a legal tender was not a necessary or proper means to the carrying on war or to the exercise of any express power of the government.

But the absence of necessity is not our only, or our weightiest objection to this legal tender clause. We still think, notwithstanding the argument adduced to the contrary, that it does violate an express provision of the constitution, and the spirit, if not the letter, of the whole instrument. It cannot be maintained that legislation justly obnoxious to such objections can be maintained as the exercise of an implied power. There can be no implication against the constitution. Legislation to be warranted as the exercise of implied powers must not be "prohibited, but consistent with the letter and spirit of the constitution."