It has two meanings:
2) To request use of classified material, e.g. as evidence, in the trial. The defendant speculates that the government will be unwilling to make the material fully available to the case, and that this will raise the possibility, in the eyes of the judge or jury, that the unreleased material might clear the defendant, making it difficult to prove guilt.
The Classified Information Procedures Act (CIPA), also known as the Graymail Law, of 1980 was designed to counter the second tactic above by allowing judges to review classified material in secret, so that the prosecution can proceed without fear of publicly disclosing sensitive intelligence.
Katharine Gun was a translator for Government Communications Headquarters (GCHQ), a British intelligence agency. In 2003, she became publicly known for leaking top-secret information to the press concerning alleged illegal activities by the United States in their push for the 2003 invasion of Iraq. She was charged under section 1 of the Official Secrets Act, 1989, however the case was dropped when the prosecution declined to offer evidence.
CIA CHIEF FACED `GRAYMAIL' THREAT, ANALYSTS SUSPECT THAT WOULD EXPLAIN WHY 11 CIA OFFICIALS GOT ONLY MILD PUNISHMENTS FOR THEIR HANDLING OF THE AMES SPY CASE.(MAIN)
Oct 09, 1994; Byline: DAVID EISENSTADT Times Union Washington bureau WASHINGTON Members of Congress and intelligence specialists are asking...