From the necessity of the case, however, the President cannot often be really supreme in matters of administration, except as the Speaker of the House of Representatives is supreme in legislation, as appointer of those who are supreme in its several departments. The President is no greater than his prerogative of veto makes him; he is, in other words, powerful rather as a branch of the legislature than as the titular head of the Executive. Almost all distinctively executive functions are specifically bestowed upon the heads of the departments. No President, however earnest and industrious, can keep the Navy in a state of creditable efficiency if he have a corrupt or incapable Secretary in the Navy Department; he cannot prevent the army from suffering the damage of demoralization if the Secretary of War is without either ability, experience, or conscience; there will be corrupt jobs in the Department of Justice, do what he will to correct the methods of a deceived or deceitful Attorney-General; he cannot secure even-handed equity for the Indian tribes if the Secretary of the Interior chooses to thwart him; and the Secretary of State may do as much mischief behind his back as can the Secretary of the Treasury. He might master the details and so control the administration of some one of the departments, but he can scarcely oversee them all with any degree of strictness. His knowledge of what they have done or are doing comes, of course, from the Secretaries themselves, and his annual messages to Congress are in large part but a recapitulation of the chief contents of the detailed reports which the heads of the departments themselves submit at the same time to the Houses.