!!! Overview
[{$pagename}]s are among the oldest primary units of the [United States Executive Branch] of the [United States federal government] of the United States—the Departments of State, War, and the Treasury all having been established within a few weeks of each other in [1789|Year 1789].[{$pagename}] are analogous to ministries common in parliamentary or semi-presidential systems but, with the United States being a presidential system, their heads otherwise equivalent to ministers, do not form a government (in a parliamentary sense) nor are they led by a head of government separate from the head of state. 

The heads of the [{$pagename}]s, known as secretaries of their respective department, form the traditional [United States Cabinet|United States Cabinet Department], an executive organ that serves at the pleasure of the president and normally acts as an advisory body to the presidency.

Since [1792|Year 1972], by statutory specification, the [United States Cabinet|United States Cabinet Department] constituted a line of succession to the presidency, after the Speaker of the [House|United States House of Representatives] and the president pro tempore of the [United States Senate], in the event of a vacancy in both the presidency and the vice presidency. The [Constitution] refers to these officials when it authorizes the President, in Article II, section 2, to "require the Opinion, in writing, of the principal Officer in each of the executive Departments, upon any Subject relating to the Duties of their respective Offices." In brief, they and their organizations are the administrative arms of the President.

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