The Cabinet of the United States is a body consisting of the vice president of the United States and the heads of the executive branch's departments in the federal government of the United States. It is the principal official advisory body to the president of the United States. The president chairs the meetings but is not formally a member of the Cabinet. The heads of departments, appointed by the president and confirmed by the Senate, are members of the Cabinet, and acting department heads also participate in Cabinet meetings whether or not they have been officially nominated for Senate confirmation. The president may designate heads of other agencies and non-Senate-confirmed members of the Executive Office of the President as members of the Cabinet.