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The researchers who Secretary Clinton designated is the topic of interest; and the redacted identifications therein are telling. The Executive Order referenced is HERE. The subsection [Sec. 4.4 (a)(2)] involves:
Sec. 4.4. Access by Historical Researchers and Certain Former Government Personnel.
(a) The requirement in section 4.1(a)(3) of this order that access to classified information may be granted only to individuals who have a need-to-know the information may be waived for persons who:
(1) are engaged in historical research projects;
(2) previously have occupied senior policy-making positions to which they were appointed or designated by the President or the Vice President; or
(3) served as President or Vice President.
Essentially what this tells us is that Secretary Hillary Clinton used her authority to waive the need to know limit on the people she listed. In essence, she gave unlimited access to her researchers for an unspecified reason.
When I see the wording, immediately I think of two distinct reasons for Clinton to grant her researchers with top-level security access to classified information: (1) to participate in searches of FISA databases (i.e. queries); and (2) to make unmasking requests for any results within those search query results.