; and (4) by adding at the end the following new paragraphs: (3) Limitation on establishment of assistant secretary positions No Assistant Secretary position may be established in addition to the positions provided for by this section unless such position is authorized by a statute enacted after the date of the enactment of this paragraph. (4) Under secretary for management The Under Secretary for Management shall serve a five-year term. . 102. Succession reforms Amend section 103(g) of the Homeland Security Act as follows: (1) In paragraph (1), strike neither the Secretary nor Deputy Secretary is and insert the Secretary, Deputy Secretary, and Associate Secretary are not . (2) In paragraph (2), insert (A) before such other officers and strike and replace remaining text with the following: (A) such other official of the Department in further order of succession to serve as Acting Secretary in a manner that requires such official to have served in the Department for at least 90 days prior to such designation in either the position of the head of a component or in another position by and with the advice and consent of the Senate, or in the event that an official meeting this criteria is not available, in a manner that requires such official to have served for at least 90 days prior to such designation in the Senior Executive Service within the Department