Christian Science Monitor, excerpted, 12-20-05:

Instead of following the safeguards established by Congress under the 1978 Foreign Intelligence Surveillance Act (FISA), Bush administration lawyers concluded that the White House could sidestep the warrant requirements while conducting the espionage operation.

Critics say the secret spying is illegal and an abuse of the president's constitutional authority. Supporters say Bush is well within his power to protect the nation from terrorists.

Disclosure of the NSA operation by the New York Times last Friday surprised many members of Congress and is said to have complicated efforts to reauthorize the Patriot Act. Republican Sen. Arlen Specter, chairman of the Judiciary Committee, has called for hearings to look into the NSA operation. Supreme Court nominee Samuel Alito has been warned to prepare for close questioning on the matter in his upcoming confirmation hearing. And there is talk of the possible appointment of two special counsels, one to look into the legality of the NSA operation, the other to investigate the disclosure of the classified project to the Times.

In addition, Sen. Barbara Boxer (D) of California has asked legal scholars to research whether Bush's authorization of secret spying is an impeachable offense.

President Bush and other administration officials have sought to blunt the barrage of criticism by emphasizing the exigencies of protecting the nation from terrorists. They stress that despite the highly classified nature of the operation, the White House briefed key members of Congress about the ongoing covert effort.

But some members of Congress say they were given few details and were unable to effectively exercise oversight responsibilities after being sworn to secrecy.

Administration officials also notified the chief judge of the Foreign Intelligence Surveillance Court, which is empowered to authorize warrants for such spying.

One section of the foreign intelligence law, FISA, authorizes warrantless surveillance under limited circumstances - but it does not appear to apply to the NSA operation as described by administration officials. Neither President Bush nor Attorney General Alberto Gonzales is claiming the secret operation was conducted in compliance with FISA.