The federal government says it may build databases of credit card transactions, hotel records and Internet searches as part of counter security measures.

Speaking during a House Judiciary Committee hearing this week on National Security Agency surveillance, representatives of the Obama administration did not rule out expanding surveillance beyond phone calls, the Associated Press reports. The administration says the NSA's PRISM surveillance program is authorized by the Patriot Act, which was passed in the wake of the September 11, 2001 terrorist attacks and was reauthorized in 2005 and 2010. The NSA did not return a request for comment by deadline.

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