(a) The following records and other material of the Commission are not required to be made public pursuant to 5 U.S.C. 552 . (1) Records, except to the extent required to be disclosed under other laws or regulations, related solely to the internal personnel rules and practices of the Commission. This exemption applies to internal rules or instructions to Commission personnel which must be kept confidential in order to assure effective performance of the functions and activities for which the Commission