For a second year, the nation's surveillance court has pointed with concern to "widespread violations" by the F.B.I. of rules intended to protect Americans' privacy when analysts search emails gathered without a warrant. In a 67-page ruling ... James E. Boasberg, the presiding judge on the Foreign Intelligence Surveillance Court, recounted several episodes uncovered by an F.B.I. audit where the bureau's analysts improperly searched for Americans' information in emails that the National Security Agency collected without warrants. Still, Judge Boasberg said he was willing to issue a legally required certification for the National Security Agency's warrantless surveillance program to operate for another year. [The program] grew out of the once-secret Stellarwind project, which President George W. Bush started after the Sept. 11, 2001, attacks. In 2008, Congress legalized the practice. The surveillance is carried out by the National Security Agency, but three other entities " the C.I.A., the National Counterterrorism Center and the F.B.I. " also receive access to streams of "raw" messages. The F.B.I. receives only a small portion of the messages that the National Security Agency vacuums up: The bureau gets copies of intercepts to and from targets who are deemed relevant to a full and active F.B.I. national security investigation. In 2019, the most recent year for which data is public, the program had more than 200,000 targets.