“ The authority to establish criteria for making fitness determinations remains within the discretion of the agency head. Agency heads also have the discretion to determine whether their criteria are equivalent to suitability standards established by the Office of Personnel Management. Agency heads shall take into account Office of Personnel Management guidance when exercising this discretion. ”

“ Individuals in positions of public trust shall be subject to reinvestigation under standards (including but not limited to the frequency of such reinvestigation) as determined by the Director of the Office of Personnel Management, to ensure their suitability for continued employment. ”