Just in case there was anyone out there who hadn't already figured this out, the NSA is spying on the entire country.

Two knowledgeable sources tell NEWSWEEK that the clash erupted over a part of Bush's espionage program that had nothing to do with the wiretapping of individual suspects. Rather, Comey and others threatened to resign because of the vast and indiscriminate collection of communications data. These sources, who asked not to be named discussing intelligence matters, describe a system in which the National Security Agency, with cooperation from some of the country's largest telecommunications companies, was able to vacuum up the records of calls and e-mails of tens of millions of average Americans between September 2001 and March 2004...
The NSA's powerful computers became vast storehouses of "metadata." They collected the telephone numbers of callers and recipients in the United States, and the time and duration of the calls. They also collected and stored the subject lines of e-mails, the times they were sent, and the addresses of both senders and recipients.

None of which is protected by the 4th amendment according to our fancy legal system.

By one estimate, the amount of data the NSA could suck up in close to real time was equivalent to one quarter of the entire Encyclopaedia Britannica per second. (The actual content of calls and e-mails was not being monitored as part of this aspect of the program, the sources say.) All this metadata was then sifted by the NSA, using complex algorithms to detect patterns and links that might indicate terrorist activity.
. . . By 2003, Yoo had moved on, and a new head of the OLC, Jack Goldsmith, began reviewing his work. Goldsmith found Yoo's legal opinions justifying the program flawed. His reasons are based on a mind-numbingly complex area of federal law, but the basic analysis comes down to this: the systematic collection and digital transmission of huge amounts of telephone and e-mail data by the government constitutes "electronic surveillance" under the Foreign Intelligence Surveillance Act, the exclusive law governing domestic spying in national-security cases. For such activities, FISA requires a court-approved warrant. Therefore, the program was illegal.

Its not clear to me what the current legal status of such a call records program would be in the wake of the FISA amendments.

The Volokh Conspiracy - Did the NSA Call Records Program Cause the Major Controversy Within DOJ, and If so, What Does It Tell Us About the Legal Issues?: