Two US senators have raised concerns that the Central Intelligence Agency (CIA) is again spying upon unwitting Americans.
The agency has “secretly” conducted warrantless surveillance through a newly disclosed programme, Senators Ron Wyden and Martin Heinrich alleged.
In a letter to intelligence officials, the two Democrats called for declassifying details of the programme.
Government data collection has been the subject of much controversy in the US.
Officially, the CIA and National Security Agency (NSA) have a foreign surveillance mission and domestic spying is prohibited by the CIA’s 1947 charter.
