But we are compelled to hold the Confiscation Act, in the form in which it was passed, as a mistake.[2] If the clause of the Constitution prohibiting 'attainder of treason to work forfeiture except during the life of the person attainted,' be necessarily applicable to the Confiscation Act, it seems to us impossible to avoid the conclusion that the act is unconstitutional. So far as the language of the prohibition is decisive of anything, it must be taken to include all sorts of property, real as well as personal--the term _forfeiture_ certainly having that extent of application in the old English law and practice, from which the framers of our Constitution took it, and there is nothing elsewhere in the Constitution or in its history to warrant any other construction. So the Congress of 1790 understood it in the act declaring the punishment of treason and some other high crimes. As to the _perpetuity_ of forfeiture, it seems equally necessary to hold that it is prohibited by the clause of the Constitution in question. Such is undeniably the first and obvious meaning of the terms. It has been argued indeed that it was not the intention of the framers of the Constitution to prohibit perpetual forfeiture of property from being 'declared' by Congress, but only to prohibit 'attainder of treason' from 'working' of itself that effect by necessary consequence--as it did under the Common Law of England. It has also been argued that the constitutional restriction does not relate to perpetuity of forfeiture, but only requires that the forfeiture or act of alienation take place, have effect, and be accomplished 'during the life of the person attainted,' and not after his death. But this reasoning is more subtile than satisfactory. A fair consideration of the subject leaves little room for doubt that the framers of the Constitution had in view and intended to prohibit everything which under the old English common law followed upon 'attainder of treason'--to prohibit forfeiture in perpetuity of property of every sort, no less than 'bills of attainder,' 'corruption of blood,' and barbarities of punishment, such as disembowelling, quartering, etc. If therefore the constitutional restriction on forfeiture apply to the Confiscation Law, it makes the law unconstitutional, in so far as it enacts the _perpetual_ forfeiture of the personal estate of rebels; and the discrimination made in regard to their real estate does not save the constitutionality of the act.