Mr. Webster, who has always been regarded by a large portion of his countrymen as one of the ablest and most enlightened expounders of the constitution, did not seem to think there was any doubt on the subject, although he belonged to the class who advocated the largest exercise of powers by the general government. From his first entrance into public life, in 1812, he gave great consideration to the subject of the currency, and in an elaborate speech in the senate, in 1836, he said: "Currency, in a large and perhaps just sense, includes not only gold and silver and bank bills, but bills of exchange also. It may include all that adjusts, exchanges, and settles balances in the operations of trade and business; but if we understand by currency the legal money of the county, and that which constitutes a lawful tender for debts, and is the statute measure of value, then undoubtedly nothing is included but gold and silver. Most unquestionably there is no legal tender, and there can be no legal tender in this country, under the authority of this government or any other, but gold and silver—either the coinage of our own mints or foreign coins, at rates regulated by congress. This is a constitutional principle perfectly plain, and of the very highest importance. The states are expressly prohibited from making anything but gold and silver a tender in payment of debts, and, although no such express prohibition is applied to congress, yet, as congress has no power granted to it in this respect but to coin money, and to regulate the value of foreign coins, it clearly has no power to substitute paper, or anything else, for coin, as a tender in payment of debts and in discharge of contracts. Congress has exercised this power fully in both its branches. It has coined money, and still coins it; it has regulated the value of foreign coins, and still regulates their value. The legal tender, therefore, the constitutional standard of value, is established and cannot be overthrown. To overthrow it would shake the whole system."

If, now, we consider the history of the times when the constitution was adopted; the intentions of the framers of that instrument, as shown in their debates; the contemporaneous exposition of the coinage power in the state conventions assembled to consider the constitution, and in the public discussions before the people; the natural meaning of the terms used; the nature of the constitution itself as creating a government of enumerated powers; the legislative exposition of nearly three-quarters of a century; the opinions of judicial tribunals, and the recorded utterances of statesmen, jurists, and commentators, it would seem impossible to doubt that the only standard of value authorized by the constitution was to consist of metallic coins struck or regulated by the direction of congress, and that the power to establish any other standard was denied by that instrument.

There are other considerations besides those I have stated, which are equally convincing against the constitutionality of the legal tender provision of the act of February 25th, 1862, so far as it applies to private debts and debts by the government contracted previous to its passage. That provision operates directly to impair the obligation of such contracts. In the dissenting opinion, in the case of Hepburn v. Griswold, this is admitted to be its operation, and the position is taken that, while the constitution forbids the states to pass such laws, it does not forbid congress to do this, and the power to establish a uniform system of bankruptcy, which is expressly conferred, is mentioned in support of the position. In some of the opinions of the state courts, to which our attention has been directed, it is denied that the provision in question impairs the obligation of previous contracts, it being asserted that a contract to pay money is satisfied, according to its meaning, by the payment of that which is money when the payment is made, and that if the law does not interfere with this mode of satisfaction, it does not impair the obligation of the contract. This position is true so long as the term money represents the same thing in both cases or their actual equivalents, but it is not true when the term has different meanings. Money is a generic term, and contracts for money are not made without a specification of the coins or denominations of money, and the number of them intended, as eagles, dollars, or cents; and it will not be pretended that a contract for a specified number of eagles can be satisfied by a delivery of an equal number of dollars, although both eagles and dollars are money; nor would it thus be contended, though at the time the contract matured the legislature had determined to call dollars eagles. Contracts are made for things, not names or sounds, and the obligation of a contract arises from its terms and the means which the law affords for its enforcement.

A law which changes the terms of the contract, either in the time or mode of performance, or imposes new conditions, or dispenses with those expressed, or authorizes for its satisfaction something different from that provided, is a law which impairs its obligation, for such a law relieves the parties from the moral duty of performing the original stipulations of the contract, and it prevents their legal enforcement.

The notion that contracts for the payment of money stand upon any different footing in this respect from other contracts appears to have had its origin in certain old English cases, particularly that of mixed money, which were decided upon the force of the prerogative of the king with respect to coin, and have no weight as applied to powers possessed by congress under our constitution. The language of Mr. Chief Justice Marshall in Faw v. Marsteller, which is cited in support of this notion, can only be made to express concurrence with it when detached from its context and read separated from the facts in reference to which it was used.

It is obvious that the act of 1862 changes the terms of contracts for the payment of money made previous to its passage, in every essential particular. All such contracts had reference to metallic coins, struck or regulated by congress, and composed principally of gold and silver, which constituted the legal money of the country. The several coinage acts had fixed the weight, purity, forms, impressions, and denominations of these coins, and had provided that their value should be certified by the form and impress which they received at the mint.

They had established the dollar as the money unit, and prescribed the grains of silver it should contain, and the grains of gold which should compose the different gold coins. Every dollar was therefore a piece of gold or silver certified to be of a specified weight and purity, by its form and impress. A contract to pay a specified number of dollars was then a contract to deliver the designated number of pieces of gold or silver of this character; and, by the laws of congress and of the several states the delivery of such dollars could be enforced by the holder.

The act of 1862 changes all this; it declares that gold or silver dollars need not be delivered to the creditor according to the stipulations of the contract; that they need not be delivered at all; that promises of the United States, with which the creditor has had no relations, to pay these dollars, at some uncertain future day, shall be received in discharge of the contracts—in other words, that the holder of such contracts shall take in substitution for them different contracts with another party, less valuable to him, and surrender the original.

Taking it, therefore, for granted that the law plainly impairs the obligation of such contracts, I proceed to inquire whether it is for that reason, subject to any constitutional objection. In the dissenting opinion in Hepburn v. Griswold, it is said, as already mentioned, that the constitution does not forbid legislation impairing the obligation of contracts.

It is true there is no provision in the constitution forbidding in express terms such legislation. And it is also true that there are express powers delegated to congress, the execution of which necessarily operates to impair the obligation of contracts. It was the object of the framers of that instrument to create a national government competent to represent the entire country in its relations with foreign nations, and to accomplish by its legislation measures of common interest to all the people, which the several states, in their independent capacities, were incapable of effecting, or if capable, the execution of which would be attended with great difficulty and embarrassment. They, therefore, clothed congress with all the powers essential to the successful accomplishment of these ends, and carefully withheld the grant of all other powers. Some of the powers granted, from their very nature, interfere in their execution with contracts of parties. Thus war suspends intercourse and commerce between citizens or subjects of belligerent nations; it renders, during its continuance, the performance of contracts previously made unlawful. These incidental consequences were contemplated in the grant of the war power. So the regulation of commerce and the imposition of duties may so affect the prices of articles imported or manufactured as to essentially alter the value of previous contracts respecting them; but this incidental consequence was seen in the grant of the power over commerce and duties. There can be no valid objection to laws passed in execution of express powers that consequences like these follow incidentally from their execution. But it is otherwise when such consequences do not follow incidentally, but are directly enacted.