House Intelligence Committee Chairman Rep. Mike Rogers, R-Mich., right, accompanied by the committee's ranking member Rep. C.A. Dutch Ruppersberger, D-Md., inform reporters about proposed changes to the National Security Agency's programme.
A report that revealed the massive US government surveillance effort is among the top finalists for the Pulitzer Prize.
Journalism's highest honour will be announced on Monday.
Revelations about the National Security Agency's spy programmes were first published in The Guardian and The Washington Post newspapers in June. The disclosures showed the government has collected information about millions of Americans' phone calls and emails based on its classified interpretations of laws passed after the 2001 terrorist attacks.
The stories were based on thousands of documents handed over by NSA leaker Edward Snowden. The reports were published by Barton Gellman of The Post and Glenn Greenwald, Laura Poitras and Ewan MacAskill of The Guardian.