Bulk data storage allows for the "potential of abuse", President Obama has said, as he announced plans to curb the National Security Agency's authority.
"While few doubt the legitimacy of spying on hostile states, individuals acting on their own is a new threat," Mr Obama said.
"These signals intelligence efforts have prevented multiple attacks and saved innocent lives, not just in the United States but around the globe. But the risk of government overreach has also become more pronounced".
More top news
Friends remember "amazing" Adam Pritchard, who died after apparently plunging down down a sharp drop while cycling with his sister.
This year's Pride in London event will include a minute's silence to commemorate the victims of the Orlando shooting.
The mother of a five-year-old girl who was found alone at a bus stop in Brighton on Friday has been found after a police appeal.