The White House has reportedly said that additional constraints are needed by the US' intelligence gathering unit, as global debate about the alleged snoop-ops has gone more aggressive.
White House spokesman Jay Carney said that the ongoing intelligence policy review would account for 'privacy concerns'.
Following the controversial revelations by whistleblower Edward Snowden about the US' alleged secret spying programmes, targeting even global leaders, the nation's ties with its allies have soured with Spain being the latest to have been identified as the target of the alleged phone snoop-op, the BBC reports.
With German chancellor Angela Merkel sending team of experts to 'push forward' the investigation into the allegations, the Obama administration is seeking to assuage the privacy concerns.
Carney said that the US did not use its intelligence gathering capabilities for the purpose of promoting its economic interests but for the national security objective.
He further explained that in the ongoing review, the stress would be also paid on properly accounting for both the security of the citizens and US allies and the privacy concerns shared by Americans and citizens around the world.
The Obama administration has been battling to provide justifications about the alleged spy programmes run on citizens and leaders alike, following the revelations, which NSA officials claim to lead to an extensive 'public debate'.