The Obama administration moved late Friday to prevent a judge in California from ruling on the constitutionality of warrantless surveillance programs authorized during the Bush administration, telling a court that recent disclosures about National Security Agency spying were not enough to undermine its claim that litigating the case would jeopardize state secrets.
In a set of filings in the two long-running cases in the Northern District of California, the government acknowledged facts that it had long held out to be secrets that would put the country at risk if they were to come out in court, including that the N.S.A. started systematically collecting data about Americans' emails and phone calls in 2001, alongside its program of wiretapping certain calls without warrants.
But the government said that despite recent leaks by Edward J. Snowden, the former N.S.A. contractor, that made public a fuller scope of the surveillance and data collection programs put in place after the Sept. 11 attacks, sensitive secrets remained at risk in any courtroom discussion of their details — like whether the plaintiffs were targets of intelligence collection or whether particular telecommunications providers like AT&T and Verizon had helped the agency.