The Attorney General is the legal adviser to the Department. The Attorney General shall assign to the Department the number of assistant Attorneys General authorized by law to be assigned to the Department. The Attorney General shall designate one of the assistant Attorneys General assigned to the Department as counsel to the Department and may not reassign that individual without consulting with the Secretary. The counsel to the Department shall have only the following duties: to give the legal aid, advice, and counsel required by the Secretary and any other official of the Department; to supervise the other assistant Attorneys General assigned to the Department; and to perform for the Department the duties that the Attorney General assigns. The counsel shall perform the duties under paragraph (2) of this subsection subject to the control and supervision of the Attorney General.