In other news, the Associated Press is reporting the National Security Agency has been using files that can track the web surfing activity of visitors to its website. The NSA says the tracking files — known as “cookies” — were a mistake and have been removed. Under federal law, government agencies are forbidden from using “cookie” files unless a senior official authorizes them and their use is disclosed in the agency’s written privacy policy. The news comes as the Bush administration continues to defend its authoritization of an NSA program to eavesdrop on Americans and foreign nationals without court-approved warrants.