The New York Times has some new and very disturbing revelations in the NSA warrantless wiretapping controversy. The news may explain why the telecoms are fighting so hard for retroactivity immunity in the planned FISA law revision.

To detect narcotics trafficking, for example, the government has been collecting the phone records of thousands of Americans and others inside the United States who call people in Latin America, according to several government officials who spoke on the condition of anonymity because the program remains classified. But in 2004, one major phone carrier balked at turning over its customers’ records. Worried about possible privacy violations or public relations problems, company executives declined to help the operation, which has not been previously disclosed.

In a separate N.S.A. project, executives at a Denver phone carrier, Qwest, refused in early 2001 to give the agency access to their most localized communications switches, which primarily carry domestic calls, according to people aware of the request, which has not been previously reported. They say the arrangement could have permitted neighborhood-by-neighborhood surveillance of phone traffic without a court order, which alarmed them.

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