In a blistering report, the investigators, from the Government Accountability Office, said the administration had disseminated "covert propaganda" in the United States, in violation of a statutory ban.
The contract with Mr. Williams and the general contours of the public relations campaign had been known for months. The report Friday provided the first definitive ruling on the legality of the activities.
Lawyers from the accountability office, an independent nonpartisan arm of Congress, found that the administration systematically analyzed news articles to see if they carried the message, "The Bush administration/the G.O.P. is committed to education."
The auditors declared: "We see no use for such information except for partisan political purposes. Engaging in a purely political activity such as this is not a proper use of appropriated funds."
All fake journalists who accepted money to write government propaganda news stories should be publicly outed for the frauds that they are.