SEATTLE — For at least six years, federal drug and other agents have had near-immediate access to billions of phone call records dating back decades in a collaboration with AT&T that officials have taken pains to keep secret, newly released documents show. The program, previously reported by ABC News and The New York Times, is called the
AT&T Hosts Massive Caller Database For DEA
Code-named the Hemisphere Project, it allows investigators armed with subpoenas to quickly mine the company’s vast database.