Feds are asking the FCC to expand the scope of the Communications Assistance for Law Enforcement Act, or CALEA. CALEA requires telecommunications carriers to allow law enforcement “to intercept, to the exclusion of any other communications, all wire and electronic communications carried by the carrier” and “to access call-identifying information,” among other powers. Law enforcement has complained that more and more criminals use “information services” to communicate, but service providers aren’t designing their networks for ready access to these services.”]
Source: https://taosecurity.blogspot.com/2004/03/excellent-coverage-of-wiretapping.html