Who has overall control of federal agencies in the US?

The President of the United States has overall control of federal agencies. This authority is primarily derived from the executive powers outlined in Article II of the U.S. Constitution. The President is responsible for enforcing federal laws and ensuring that federal agencies operate in alignment with the administration's policies and priorities. Each federal agency is headed by a chief official, often referred to as a cabinet member, who is appointed by the President and serves at the President's pleasure. This structure allows the President to direct the agencies' activities and initiatives, thereby influencing the implementation of federal policies and programs.

In this context, the Supreme Court primarily interprets laws and can check the power of the executive, while Congress has the power to legislate and allocate funding but does not manage executive agencies directly. The Vice President's role is primarily supportive and does not encompass the overall control of federal agencies. Thus, the President's role is pivotal in the administration and management of federal agencies, making this the correct answer.