To review, there are three concepts to determine before you begin writing your essay: the tone, the audience and the purpose. The tone is the attitude of the writer. Two factors that greatly affect the tone are audience and purpose. The audience of an essay is anyone who might read it.
The White House is not in a state. It is located in Washington, D.C. The District of Columbia is a federal district that Congress established in the late 1700s with land Virginia and  Maryland donated for the purpose of serving as home to the nation's capital.
The White House Office is an entity within the Executive Office of the President of the United States. The White House Office is headed by the White House Chief of Staff, who is also the head of the Executive Office of the President. The staff of the various offices are based in the West Wing and East Wing of the White House, the Eisenhower Executive Office Building, and the New Executive Office Building.