From the New York Times:
...soon after Alberto R. Gonzales's arrival as attorney general in February 2005, the Justice Department issued another opinion, this one in secret.... an expansive endorsement of the harshest interrogation techniques ever used by the Central Intelligence Agency, [which] for the first time provided explicit authorization to barrage terror suspects with a combination of painful physical and psychological tactics, including head-slapping, simulated drowning and frigid temperatures....Later that year, as Congress moved toward outlawing "cruel, inhuman and degrading treatment," the Justice Department issued another secret opinion, one most lawmakers did not know existed, current and former officials said. The Justice Department document declared that none of the C.I.A. interrogation methods violated that standard.
Question: Who were the lawmakers privy to Gonzo's secret A-OK of waterboarding?