FBI 'asked Edward Snowden's father to go to Moscow' An FBI spokesman refused to comment on the claim but an FBI official with experience of international operations told The Daily Telegraph that the bureau would use "every influence opportunity" to get Mr Snowden back. "There would never be threats or leverage behind the request, it would be about giving the father the opportunity to ask his son to do the right thing," the official said, adding that the plan would have to be closely coordinated with CIA and the State Department. Senior US officials appeared before the Senate today where John Inglis, the deputy director of the NSA, conceded that no from his agency had been sacked over the failure to prevent Mr Snowden's leaks. No one has offered to resign. Everyone is working hard to understand what happened," Mr Inglis said. We don't know yet where precisely [data safeguards] failed. Shortly before the Senate hearing, James Clapper, America's top intelligence official, ordered the declassification three secret documents in "the interest of increased transparency." Two letters to Congress make the case for continuing mass collection of phone and email data, arguing that that government needed to be able to "rapidly identify any terrorist threats emanating from within the US." The third document is a secret court order, part of which had already been leaked by Mr Snowden, forcing a subsidiary of the US phone company Verizon to hand over records to the FBI. Even as the documents were made public, The Guardian disclosed details of the the NSA's XKeyscore programme which reportedly allows intelligence analysts to search through mass amounts of online data without a court order. The programme is intended for conducting electronic surveillance on foreigners but seems to allow the US to rifle through Americans' online data with only a few clicks of a simple computer menu. It appears to be the programme Mr Snowden was referring to when he claimed to be able "wiretap anyone" without prior authorisation from his desk at an NSA facility in Hawaii. He said he could even access Barack Obama's emails as long as he knew the president's personal address. Under law, the NSA must seek court orders before accessing Americans' data but XKeyscore seems to give analysts the technical ability to carry out the searches at any time. US officials have denied that is possible.