President Obama insists classified intelligence gathering has been fully authorized by Congress. 

In a news conference in San Jose, Obama said, quote,  "Nobody is listening to your telephone calls." 

He was asked to respond to reports of widespread Internet and phone data mining by the National Security Agency. 

Speaking broadly, the President cited ongoing efforts to protect the U.S. from terrorism. 

He said members of Congress are regularly briefed and noted that a special court monitors classified intelligence-gathering efforts. 

Obama said there are necessary trade-offs in a delicate balancing act involving national security and privacy rights.  (Metro Networks Inc.)