UPDATE 1-Apple, Google, Dozens Of Others Urge U.S. Surveillance Disclosures

Dozens of companies, non-profits and trade organizations including Apple Inc, Google Inc and Facebook Inc sent a letter on Thursday pushing the Obama administration and Congress for more disclosures on the government's national security-related requests for user data.

General Keith Alexander, director of the National Security Agency, suggested he was open to the idea but that officials were trying to determine a way to disclose that information without jeopardizing FBI investigations.

"We just want to make sure we do it right, that we don't impact anything ongoing with the FBI. I think that's the reasonable approach," Alexander told the Aspen Security Forum in Colorado, when asked about the letter.