It can not be questioned that if Congress has power to make provision for the indigent insane without the limits of this District it has the same power to provide for the indigent who are not insane, and thus to transfer to the Federal Government the charge of all the poor in all the States. It has the same power to provide hospitals and other local establishments for the care and cure of every species of human infirmity, and thus to assume all that duty of either public philanthropy or public necessity to the dependent, the orphan, the sick, or the needy which is now discharged by the States themselves or by corporate institutions or private endowments existing under the legislation of the States. The whole field of public beneficence is thrown open to the care and culture of the Federal Government. Generous impulses no longer encounter the limitations and control of our imperious fundamental law; for however worthy may be the present object in itself, it is only one of a class. It is not exclusively worthy of benevolent regard. Whatever considerations dictate sympathy for this particular object apply in like manner, if not in the same degree, to idiocy, to physical disease, to extreme destitution. If Congress may and ought to provide for any one of these objects, it may and ought to provide for them all. And if it be done in this case, what answer shall be given when Congress shall be called upon, as it doubtless will be, to pursue a similar course of legislation in the others? It will obviously be vain to reply that the object is worthy, but that the application has taken a wrong direction. The power will have been deliberately assumed, the general obligation will by this act have been acknowledged, and the question of means and expediency will alone be left for consideration. The decision upon the principle in any one case determines it for the whole class. The question presented, therefore, clearly is upon the constitutionality and propriety of the Federal Government assuming to enter into a novel and vast field of legislation, namely, that of providing for the care and support of all those among the people of the United States who by any form of calamity become fit objects of public philanthropy.