To what extent do cabinet heads control the bureaucracy?

Even the experts can't agree on the total number of federal government agencies, commissions, and departments.

Most estimates suggest there are probably more than 2,000 of these. They each have an area of specialization - some much broader than others - but their duties often overlap, making administration more difficult. To complicate things even more, many agencies have counterparts at the state and local level. Its size, complexity, and overlapping responsibilities leave the federal bureaucracy open to constant attempts to reorganize and streamline.

Congress has the power to create, organize, and disband all federal agencies. Most of them are under the control of the President, although few of them actually have direct contact with the White House. So, the bureaucracy has two masters - Congress and the President. The bureaucracy generally falls into four broad types: Cabinet departments, government corporations, independent agencies, and regulatory commissions