Washington ? Vice President Dick Cheney doesn’t have to disclose the advice his energy task force got from the industry, an appeals court ruled Tuesday in what probably was a final blow to a politically charged lawsuit over public access to White House decision making.

The task force met in 2001 and produced pro-industry recommendations for sweeping energy legislation now before Congress. The Bush administration fought hard to keep the panel’s workings secret, arguing that public disclosure would make it difficult for any White House to solicit candid advice on important policy issues.

Once seen as a potentially huge political liability for the Bush administration, the task force lawsuit ended up being more Washington political theater, with cameo appearances by Supreme Court Justice Antonin Scalia and former Enron Corp. Chairman Ken Lay.

The two private groups that sued failed to establish that the government had a legal duty to produce documents detailing the White House’s industry contacts, the court said in an 8-0 decision.

The Sierra Club and Judicial Watch alleged that energy executives and lobbyists effectively became members of the task force, while environmental groups and others were shut out of the meetings. Outside participation made the task force a federal advisory committee with an obligation to disclose its operations, the groups argued, a position the court rejected.

“The outsider might make an important presentation, he might be persuasive, the information he provides might affect the committee’s judgment,” U.S. Appeals Court Judge A. Raymond Randolph wrote. “But having neither a vote nor a veto over the advice the committee renders to the president, he is no more a member of the committee than the aides who accompany congressmen or Cabinet officers to committee meetings.”

In a statement, Cheney’s office said the court guarded the confidentiality of internal deliberations and that the Constitution protects such deliberations as essential to informed decision making.

The appeals court directed U.S. District Judge Emmet Sullivan to dismiss the case. Sullivan earlier had ordered the White House to produce some documents.