As President Barack Obama ordered curbs on data collected by US intelligence agencies and vowed not to monitor the communications of "our close friends and allies,`` critics said the changes do not go far enough.
Canadian authorities allowed the National Security Agency to spy in the country during the G8 and G20 summits in Ontario in 2010, CBC News reported, citing documents shared by former NSA contractor Edward Snowden.
As reports suggested the Indian Embassy in Washington was one of the 38 diplomatic missions which American intelligence agencies were spying on, CPI-M leader Sitaram Yechury said the US was infringing individual human rights.
A top American lawmaker called on Russia to extradite Edward Snowden to the United States, arguing that the former CIA contractor is a fugitive deserving prosecution and not a whistleblower worthy of protection.
Former Vice President Dick Cheney said US congressional leaders he briefed in 2004 on a surveillance program recently disclosed by Edward Snowden supported it, and both Republicans and Democrats wanted to keep it secret.