May 24 - By Brian Bergstein, AP Technology Writer
There's a lot we still don't know — and may never know — about the National Security Agency's surveillance of Americans' phone calls. But one striking tidbit has emerged: that the agency is mining phone records for patterns of terrorist activity.
May 17 - By Katherine Shrader, AP Writer
National Intelligence Director John Negroponte declassified a list of 30 congressional briefings the Bush administration says have been held since the National Security Agency began its no-warrant surveillance program after the Sept. 11 attacks.

May 16 - By Associated Press
Verizon Communications Inc. says it did not give the government records of millions of phone calls, joining fellow phone company BellSouth in disputing key assertions in a USA Today article.

May 16 - By Associated Press
AT&T; Inc. and BellSouth Corp. have been added to a lawsuit seeking $200 billion in damages from telephone companies accused of violating privacy laws by turning over calling records to the government, lawyers said Tuesday.
May 16 - By Douglass K. Daniel, AP Writer
The Federal Communications Commission, which regulates the telephone industry, should open an investigation into whether the nation's phone companies broke the law by turning over millions of calling records to the government, an FCC commissioner says.
May 12 - By Beth DeFalco, AP Writer
Verizon Communications Inc. faces its first lawsuit that claims the phone carrier violated privacy laws for giving phone records to the National Security Agency for a secret surveillance program.

May 12 - By Catherine Tsai, AP Writer
Former Qwest Communications Chief Executive Joseph Nacchio refused to share customer telephone records with the National Security Agency following the Sept. 11 terrorist attacks because authorities did not want to use "any legal process" to justify their request, Nacchio's attorney said Friday.
May 12 - By Erin McClam, AP National Writer
A report in USA Today that the National Security Agency was building a database of Americans' phone records, with the help of three major U.S. telephone companies, reignited discussion around the country about the tricky balance between civil liberties and counterterrorism efforts.
May 11 - By The Associated Press, AP Writer
Reaction to reports that the National Security Agency has been secretly collecting ordinary Americans' telephone records:

May 11 - By Brian Bergstein, AP Technology Writer
If the National Security Agency is indeed amassing a colossal database of Americans' phone records, one way to use all that information is in "social network analysis," a data-mining method that aims to expose previously invisible connections among people.
May 11 - By Gina Holland, AP Writer
Former Supreme Court Justice Sandra Day O'Connor declined to step into the uproar over secret collection of Americans' phone records, saying a close look at the facts by courts could determine whether the government acted properly.

May 11 - By Associated Press
Lawmakers demanded answers from the Bush administration Thursday about a spy agency secretly collecting records of millions of ordinary Americans' phone calls to build a database of all calls within the country.

Apr 27 - By Laurie Kellman, AP Writer
Noting that Congress holds the power of the purse, a frustrated Senate chairman threatened to try to block money for President Bush's domestic wiretapping program.
Mar 30 - By Stephen Manning, AP Writer
A former National Security Agency computer analyst was sentenced to six years in prison Thursday for taking home classified documents and storing them in boxes in his kitchen after he left his job.
Feb 28 - By William McCall, AP Business Writer
Civil rights attorneys have sued the National Security Agency, claiming it illegally wiretapped conversations between the leaders of an Islamic charity that had been accused of aiding Muslim militants and two of its lawyers.
Feb 9 - By Deb Riechmann, AP Writer
Under fire for eavesdropping on Americans, President Bush said Thursday that spy work stretching from the U.S. to Asia helped thwart terrorists plotting to use shoe bombs to hijack an airliner and crash it into the tallest skyscraper on the West Coast.
Feb 8 - By Katherine Shrader, AP Writer
After weeks of insisting it would not reveal details of its eavesdropping without warrants, the White House reversed course Wednesday and provided a House committee with highly classified information about the operation.

Feb 6 - By Kathleen Hennessey, AP Writer
Former President Jimmy Carter criticized the Bush administration's domestic eavesdropping program Monday and said he believes the president has broken the law.

Feb 3 - By Margaret Ebrahim, AP Writer
The White House was eager to protect its ability to gather foreign intelligence. Congress was eager to rein in executive power. What sounds like a new debate over the president's ability to eavesdrop without warrants occurred 30 years ago.
Feb 3 - By Associated Press
Senate Intelligence Committee Chairman Pat Roberts said Friday the Bush administration's domestic spying is within the president's inherent power under the Constitution, and he rejected criticism that Congress was kept in the dark about it.