ritualised

if analysts stumble across evidence that an American has committed any crime, they will send it to the Justice Department.

There is a parallel debate about the FISA Amendments Act’s warrantless surveillance program. National security analysts sometimes search that act’s repository for Americans’ information, as do F.B.I. agents working on ordinary criminal cases. Critics call this the “backdoor search loophole,” and some lawmakers want to require a warrant for such searches.

But Patrick Toomey, a lawyer for the American Civil Liberties Union, called the move an erosion of rules intended to protect the privacy of Americans when their messages are caught by the N.S.A.’s powerful global collection methods. He noted that domestic internet data was often routed or stored abroad, where it may get vacuumed up without court oversight.

In its final days, the Obama administration has expanded the power of the National Security Agency to share globally intercepted personal communications with the government’s 16 other intelligence agencies before applying privacy protections.

a 23-page, largely declassified copy of the procedures.

Previously, the N.S.A. filtered information before sharing intercepted communications with another agency, like the C.I.A. or the intelligence branches of the F.B.I. and the Drug Enforcement Administration. The N.S.A.’s analysts passed on only information they deemed pertinent, screening out the identities of innocent people and irrelevant personal information.