More Mistakes at the N.S.A.

A fresh trove of previously classified documents released on Tuesday provides further evidence — as if any more were needed — that the National Security Agency has frequently been unable to comprehend, let alone manage, its vast and continuing collection of Americans’ telephone and Internet records. The documents, made available by the agency in response to lawsuits by two advocacy groups, revealed that in 2009 a judge on the Foreign Intelligence Surveillance Court severely reprimanded the agency for violating its own procedures for gathering and analyzing phone records, and then misrepresented those violations to the court.