In administrative law, supervision means overseeing or the power or authority of an officer to see that subordinate officers perform their duties. If the latter fail or neglect to fulfill them, the former may take such action or step as prescribed by law to make them perform their duties. Control, on the other hand, means the power of an officer to alter or modify or nullify or set aside what a subordinate officer ha[s] done in the performance of his duties and to substitute the judgment of the former for that of the latter."6

Section 4 of Article X of the Constitution confines the President's power over local governments to one of general supervision. It reads as follows:

"Sec. 4. The President of the Philippines shall exercise general supervision over local governments. x x x"

This provision has been interpreted to exclude the power of control. In Mondano v. Silvosa,5 the Court contrasted the President's power of supervision over local government officials with that of his power of control over executive officials of the national government. It was emphasized that the two terms -- supervision and control -- differed in meaning and extent. The Court distinguished them as follows:

"x x x In administrative law, supervision means overseeing or the power or authority of an officer to see that subordinate officers perform their duties. If the latter fail or neglect to fulfill them, the former may take such action or step as prescribed by law to make them perform their duties. Control, on the other hand, means the power of an officer to alter or modify or nullify or set aside what a subordinate officer ha[s] done in the performance of his duties and to substitute the judgment of the former for that of the latter."6

In Taule v. Santos,7 we further stated that the Chief Executive wielded no more authority than that of checking whether local governments or their officials were performing their duties as provided by the fundamental law and by statutes. He cannot interfere with local governments, so long as they act within the scope of their authority. "Supervisory power, when contrasted with control, is the power of mere oversight over an inferior body; it does not include any restraining authority over such body,"8 we said.

In a more recent case, Drilon v. Lim,9 the difference between control and supervision was further delineated. Officers in control lay down the rules in the performance or accomplishment of an act. If these rules are not followed, they may, in their discretion, order the act undone or redone by their subordinates or even decide to do it themselves. On the other hand, supervision does not cover such authority. Supervising officials merely see to it that the rules are followed, but they themselves do not lay down such rules, nor do they have the discretion to modify or replace them. If the rules are not observed, they may order the work done or redone, but only to conform to such rules. They may not prescribe their own manner of execution of the act. They have no discretion on this matter except to see to it that the rules are followed.

Under our present system of government, executive power is vested in the President.10 The members of the Cabinet and other executive officials are merely alter egos. As such, they are subject to the power of control of the President, at whose will and behest they can be removed from office; or their actions and decisions changed, suspended or reversed.11 In contrast, the heads of political subdivisions are elected by the people. Their sovereign powers emanate from the electorate, to whom they are directly accountable. By constitutional fiat, they are subject to the President’s supervision only, not control, so long as their acts are exercised within the sphere of their legitimate powers. By the same token, the President may not withhold or alter any authority or power given them by the Constitution and the law.