as the Commission considers appropriate. The Commission may request the Attorney General to invoke the aid of an appropriate United States district court to require, by subpoena or otherwise, such attendance, testimony, or production. (b) Powers of Subcommittees and Members Any subcommittee or member of the Commission may, if authorized by the Commission, take any action which the Commission is authorized to take by this section. (c) Obtaining Official Data The Commission may acquire directly from the head of any department, agency, or instrumentality of the Federal Government, available information which the Commission considers useful in the discharge of its duties. All departments, agencies, and instrumentalities of the Federal Government shall cooperate with the Commission with respect to such information and shall furnish all information requested by the Commission to the extent permitted by law. 5. Administrative provisions (a) Staff The Commission may, without regard to section 5311(b) of title 5, United States Code, appoint and fix the compensation of such personnel as the Commission considers appropriate. (b) Applicability of Certain Civil Service Laws The staff of the Commission may be appointed without regard to the provisions of title 5, United States Code, governing appointments in the competitive service, and without regard to the provisions of chapter 51 and subchapter III of chapter 53 of such title relating to classification and General Schedule pay rates, except that the compensation of any employee of the Commission may not exceed a rate equal to the annual rate of basic pay payable for GS–15 of the General Schedule under section 5332 of title 5, United States Code. (c) Experts and Consultants The Commission may procure the services of experts and consultants in accordance with the provisions of section 3109(b) of title 5, United States Code, but at rates for individuals not to exceed the daily equivalent of the highest rate payable under section 5332 of such title. (d) Administrative Support