President Obama has ordered the US Justice Department review the policy under which it obtains journalists' records.
The move comes after the administration was criticised for secretly seizing two months of phone records from The Associated Press and reading the e-mail of a Fox News reporter as part of separate investigations about the publication of government secrets.
Obama re-stated his support for a media shield law that he said would "guard against government overreach." Such a law would require a federal judge to sign off before officials could access the records of journalists. Mr Obama said:
Journalists should not be at legal risk for doing their jobs. Our focus must be on those who break the law.
More top news
A man has had his foot amputated after falling into an escalator in Shanghai - just a week after a woman died in a similar incident.
Industry groups and political rivals warn the planned regulation will raise energy prices and threaten jobs.
The actress said she was 'devastated' to hear the tragic news of her idol's death and described her as a 'remarkable woman'.