In the letter, the former U.S. military leaders also suggested senators ask for a full declassification, with necessary redactions, of information related to Haspel's involvement in the Bush administration's "enhanced interrogation" programs which allow torture and other unlawful abuse of detainees.
On "Face The Nation", Feinstein discussed her issues with supporting Gina Haspel to be the next CIA Director in place of Mike Pompeo, who has been nominated by President Donald Trump to be the next secretary of state.
But rebuffed Democrats believe the CIA has been selective when it comes to releasing information about Haspel, pointing to the agency's decision last week to declassify a memo that cleared Haspel of responsibility for destroying evidence of brutal coercive methods being used - but then refusing to share with the public basic biographical details about Haspel's career, including a full list of the countries in which she was posted.
"Although a large amount of information about the former RDI Program has already been publicly acknowledged, CIA still protects information regarding CIA personnel involved in the RDI Program as well as information about the operation and location of any overseas detention facilities", the agency said in its letter to the senators.
"In the absence of any meaningful declassification of her career, this public campaign on behalf of Ms. Haspel does a great disservice to the American people, who expect and deserve to understand the backgrounds of their government's leaders", the Democrats lamented in the mid-April letter.
In a letter published by Human Rights First on Monday, as many as 109 retired United States generals and admirals urged lawmakers to reject her nomination, for "being intimately involved in torture". She also is under scrutiny for her destruction of videotapes showing interrogations of al-Qaeda prisoners.
The letter cites reports that Haspel, who has worked at the Central Intelligence Agency since 1985, ran a Central Intelligence Agency "black site" at which at least one detainee, Abd al-Rahim al-Nashiri, was repeatedly tortured, including by waterboarding. The report said Zubayadah was subjected to 83 rounds of waterboarding and had his head slammed into walls. Other than a professional admonishment, Haspel was not punished for her action. They also cited her alleged role in carrying our orders to destroy 92 videotapes of individuals in USA custody being subjected to torture.
An aide to CIA Executive Director Kyle "Dusty" Foggo later revealed the agency's rationale for shredding the tapes, writing in an email that "the heat from destroying [them] is nothing compared with what it would be if the tapes ever got into public domain.it would be devastating to us". By agreeing to oversee torture and write a memo ordering the destruction of evidence, she failed the challenge.
Haspel is due to appear before the Senate Intelligence Committee for her confirmation hearing on May 9.