Dr. Kaye Whitley was instructed by superiors not to appear at a July 31 hearing on the matter despite a subpoena from the committee. Whitely serves as director of the DoD's Sexual Assault Prevention and Response Office.
A superior official claimed that he, not Whitley, was accountable to Congress on the military's sexual assault prevention efforts.
The committee appealed to Gates in a letter yesterday, asking him to instruct Whitley to testify.
Oversight Subcommittee on National Security and Foreign Affairs Chairman John Tierney (D-Mass.) had first requested Whitley's testimony in late June. The committee issued a subpoena a month later.
At the July 31 hearing, Tierney's subcommittee heard testimony from several servicewomen who had been raped by fellow soldiers. A Government Accountability Office report, released the same day, found the military's efforts to prevent sexual assault inadequate.