The CIA will be providing senators with an opportunity to review more classified information about President Donald Trump’s nominee to head the agency in a secure room deep beneath the Capitol.

But some senators are not convinced about the commitment to transparency about nominee Gina Haspel, the current deputy director who spent much of her career serving in clandestine capacities.

Jaime Cheshire, the CIA’s congressional affairs director, wrote in identical letters sent late Tuesday to Democratic Sens. Dianne Feinstein of California, Martin Heinrich of New Mexico and Ron Wyden of Oregon, that there would also be efforts to increase the amount of publicly available information.

“Inaccurate public conjecture clouds the discussion and makes the Senate’s advice and consent responsibilities more challenging,” Cheshire wrote. “For these reasons, CIA has made public information about Ms. Haspel’s background, and is actively working towards sharing additional information with the public to the greatest extent possible consistent with our responsibility to protect information the disclosure of which reasonably could be expected to cause damage to the national security.”

The three Democrats said in a joint statement that they were unsatisfied with the CIA’s response.