clipped from: www.washingtonpost.com   
FBI Data Transfers Via Telecoms Questioned

Since a 1994 law required telecoms to build electronic interception capabilities into their systems, the FBI has created a network of links between the nation's largest telephone and Internet firms and about 40 FBI offices and Quantico, according to interviews and documents describing the agency's Digital Collection System. The documents were obtained under the Freedom of Information Act by the Electronic Frontier Foundation, a nonprofit advocacy group in San Francisco that specializes in digital-rights issues.

When you're building something like this deeply into the telecommunications infrastructure, when it becomes so technically easy to do, the only thing that stands between legitimate use and abuse is the complete honesty of the persons and agencies using it and the ability to have independent oversight over the system's use
said no government agency has open access to the company's networks