FAS

AIPAC Defendants Say Testimony from ISOO’s Leonard is Crucial

04.16.08 | 3 min read | Text by Steven Aftergood

Testimony from classification expert J. William Leonard, the former director of the Information Security Oversight Office, will “seriously undercut the government’s case” against two former officials of the American Israel Public Affairs Committee (AIPAC) who are charged with unlawful receipt and transmission of classified information, defense attorneys argued in a dramatic new pleading (pdf) urging that he be allowed to testify.

Prosecutors oppose Mr. Leonard’s testimony, saying it is precluded by his prior contacts with the prosecution.

The closely-watched AIPAC case is the first time that the government has ever used the espionage statutes to prosecute private citizens — pro-Israel lobbyists in this case — for receiving classified information to which they were not entitled and then communicating it to others.

“Mr. Leonard’s expert testimony is critical to the defense,” the defense pleading stated. “As the government’s former ‘Classification Czar,’ he has unsurpassed expertise in the issues involved in this case, and his insights into how and why the government classifies, protects, and discloses sensitive information squarely refute the prosecution’s theory of the case.”

The government has opposed Mr. Leonard’s testimony, citing a meeting he had in 2006 with prosecutors regarding the case while he was still a government employee and was being considered as a witness for the prosecution.

(“My impression from the interview was that they did not like what I had to say, especially about over-classification, and decided not to use me as an expert,” Mr. Leonard stated in an affidavit.)

For him to now testify as a defense witness, prosecutors argued, would be a violation of the Ethics in Government Act and, they insinuated, could even put him at risk of criminal prosecution.

To resolve any lingering legal uncertainty, the defense asked the court to issue an order authorizing Mr. Leonard to testify.

“Mr. Leonard has carefully examined the classified information at issue in this case,” the defense filing indicated. If and when he is permitted to appear, Mr. Leonard will testify “that information disclosed in this case could not damage national security, was not closely held, and was not demonstrably classified.”

Further, Mr. Leonard will testify “that high level government officials frequently disclose information contained in classified documents for the purpose of advancing national security interests instead of harming them,” and that “the defendants reasonably could have believed that their conduct was appropriate.”

“Given Mr. Leonard’s unsurpassed expertise, his testimony is likely to impact the outcome of the trial,” the defense said.

However, defendants need an order from the court “to ensure that Mr. Leonard can testify safely, particularly in light of the government’s shot across the bow regarding Mr. Leonard’s potential criminal liability [if he testifies for the defense].”

See the Defendants’ Reply to the Government’s Opposition to the Expert Witness Testimony of J. William Leonard, April 11, 2008.

Among the potential expert witnesses for the prosecution is William McNair, a former Information Review Officer at the Central Intelligence Agency known for his conservative approach to declassification and disclosure.

A pre-trial appeal of several district court rulings in the AIPAC case has been filed by the government, as well as a cross-appeal filed by the defense. This month’s anticipated trial was postponed and no new trial date has been set.

publications
See all publications
FAS
Blog
Gil on the Hill: Who Won the Shutdown?

We came out of the longest shutdown in history and we are all worse for it. Who won the shutdown fight? It doesn’t matter – Americans lost. And there is a chance we run it all back again in a few short months.

11.25.25 | 7 min read
read more
Environment
Issue Brief
Collaborative Action in Massachusetts to Counter Extreme Heat

Promising examples of progress are emerging from the Boston metropolitan area that show the power of partnership between researchers, government officials, practitioners, and community-based organizations.

11.24.25 | 17 min read
read more
Government Capacity
day one project
Policy Memo
Tax Filing as Easy as Mobile Banking: Creating Product-Driven Government

Americans trade stocks instantly, but spend 13 hours on tax forms. They send cash by text, but wait weeks for IRS responses. The nation’s revenue collector ranks dead last in citizen satisfaction. The problem isn’t just paperwork — it’s how the government builds.

11.20.25 | 15 min read
read more
Clean Energy
Report
Report: When Ambition Meets Reality — Lessons Learned in Federal Clean Energy Implementation, and a Path Forward

In a new report, we begin to address these fundamental implementation questions based on discussions with over 80 individuals – from senior political staff to individual project managers – involved in the execution of major clean energy programs through the Department of Energy (DOE).

11.19.25 | 6 min read
read more