For more than two years, a handful of Democrats on the Senate intelligence committee have warned that the government is secretly interpreting its surveillance powers under the Patriot Act in a way that would be alarming if the public - or even others in Congress - knew about it. On [March 15], two of those senators - Ron Wyden of Oregon and Mark Udall of Colorado - went further. They said a top-secret intelligence operation that is based on that secret legal theory is not as crucial to national security as executive branch officials have maintained. The Justice Department has argued that disclosing information about its interpretation of the Patriot Act could alert adversaries to how the government collects certain intelligence. It is seeking the dismissal of two Freedom of Information Act lawsuits - by The New York Times and by the American Civil Liberties Union - related to how the Patriot Act has been interpreted. The dispute centers on what the government thinks it is allowed to do under Section 215 of the Patriot Act, under which agents may obtain a secret order from the Foreign Intelligence Surveillance Court allowing them to get access to any tangible things" - like business records - that are deemed "relevant" to a terrorism or espionage investigation. The interpretation of Section 215 that authorizes this secret surveillance operation is apparently not obvious from a plain text reading of the provision, and was developed through a series of classified rulings by the Foreign Intelligence Surveillance Court.