The US Justice Department has lost three significant court rulings over records sought by the public under the Freedom of Information Act, including a rare order to release a secret document.

The rulings have been issued recently by judges in federal district court in Washington. Two of the judges have ruled that protecting the privacy of congressmen is not enough reason to withhold records about corruption investigations of the politicians.

The third ruling, from US District Judge Richard Roberts, said the US Trade Representative must turn over a position paper prepared during negotiations for a Free Trade Agreement of the Americas, conducted in the 1990s and 2000s, which never resulted in a deal.

The Justice Department had argued that disclosure of the document would damage foreign relations since it agreed with other nations that documents produced during the negotiations would not be released to the public.

On Wednesday, Judge Roberts sided with the Centre for International Environmental Law in finding there were no plausible or logical explanations to justify the secrecy. He cited the member nations' agreement that all documents produced during negotiations would be publicly available at the end of next year unless a country objects to the release of one of its own documents.

He said that was evidence that the confidentiality was meant to give the participating nations a way to release their own materials, rather than keep other countries from releasing theirs.

Lucy Dalglish, executive director of the Reporters Committee for Freedom of the Press, said it was unusual for a judge to order the release of secret documents. But she said she thought judges were increasingly willing to question why documents were classified, after deferring more readily to the executive branch's secrecy decisions following the September 11 2001, terrorist attacks.

"I think what we've discovered over the last 10 years or so is that too much information gets classified, too many people have the ability to classify and a lot of things are unnecessarily classified," she said.

"So I think the executive branch has lost some credibility over what needs to be classified. There are a few more judges willing to say, 'Sorry you didn't hit the mark that time'. But they still are going to defer to the executive branch most of the time."

The Justice Department's latest Freedom of Information Act loss came yesterday over the investigation into Republican Rep Jerry Lewis. The government watchdog group Citizens for Responsibility and Ethics in Washington wants records of the department's closed investigation into claims that the congressman received federal cash in exchange for political donations to learn why he was not prosecuted.

The Justice Department flatly denied the request, citing Mr Lewis' privacy rights.

But US District Judge James Boasberg ruled privacy was not a good enough reason to withhold documents with such public interest at stake. He ordered the department to list each document it wanted to withhold and explain why it should be able to do so, acknowledging the department may ultimately have other valid reasons to withhold most, if not all, of the Lewis files.

In his ruling, Judge Boasberg cited a similar opinion reached in January by US District Judge Gladys Kessler in CREW's lawsuit seeking investigative records of Republican Rep Don Young.

Congress asked the Justice Department in 2008 to investigate Mr Young's role in securing a 10 million-dollar congressional "earmark" to widen a Florida highway, a project that would have benefited a developer who helped raise money for the politician.

Both mr Lewis and Mr Young have denied any wrongdoing.

"It is difficult to understand how there could not be a substantial public interest in disclosure of documents regarding the manner in which DoJ (Department of Justice) handled high-profile allegations of public corruption about an elected official," Judge Kessler wrote in a passage Judge Boasberg quoted in his ruling.

"Clearly, the American public has a right to know about the manner in which its representatives are conducting themselves and whether the government agency responsible for investigating and, if warranted, prosecuting those representatives for alleged illegal conduct is doing its job."

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