Commission may, for the purpose of carrying out this Act, hold hearings, sit and act at times and places, take testimony, and receive evidence as the Commission considers appropriate. (2) Obtaining official data The Commission may secure directly from any department or agency of the United States information necessary to enable it to carry out this Act. Upon request of the Chair of the Commission, the head of that department or agency shall furnish that information to the Commission. (3) Mails The Commission may use the United States mails in the same manner and under the same conditions as other departments and agencies of the United States. (4) Administrative support services Upon the request of the Commission, the Administrator of General Services shall provide to the Commission the administrative support services necessary for the Commission to carry out its responsibilities under this Act. (f) Meetings (1) In general The Commission shall meet at the call of the Chair. (2) Initial meeting The Commission shall hold its first meeting not later than the earlier of— (A) 30 days after the date on which all members of the Commission have been appointed