[Code of Federal Regulations] [Title 5, Volume 3] [Revised as of January 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 5CFR1210.42] [Page 97] TITLE 5--ADMINISTRATIVE PERSONNEL CHAPTER II--MERIT SYSTEMS PROTECTION BOARD PART 1210_DEPARTMENT OF HOMELAND SECURITY HUMAN RESOURCES MANAGEMENT SYSTEM-- Subpart D_Review of Mandatory Removal Action Appeals Sec. 1210.42 Intervenors. The Director may intervene as a matter of right under 5 CFR 9701.707(f) or otherwise participate in any proceeding brought under this subpart, if the Director believes that an erroneous decision will have a substantial impact on a civil service law, rule, regulation, or policy directive.