To persuade senators to reauthorize the law in full, the Trump administration is holding classified, members-only briefings for the entire House and Senate next Wednesday, with heavy hitters in attendance: Attorney General Jeff Sessions, Director of National Intelligence Dan Coats, NSA Director Mike Rogers, and FBI Director Christopher Wray will give the briefings, according to an internal announcement of the meetings provided to The Intercept and confirmed by multiple sources on Capitol Hill.

Section 702 serves as the legal basis for two of the NSA's largest mass surveillance programs, both revealed by Edward Snowden. One program, PRISM, allows the government to collect messaging data sent to and from foreign targets, from major internet companies like Google, Facebook, Apple, and Microsoft. The other, UPSTREAM, scans internet backbone sites in the U.S. and copies communications to and from foreign targets.

Both programs ostensibly only "target" foreigners, but likely collect massive amounts of Americans' communications as well. And despite persistent questioning from members of Congress, the Obama and Trump administrations have repeatedly refused to provide an estimate of how many domestic communications the programs collect. Civil liberties advocates have long warned liberal defenders of the program under President Obama that one day the surveillance apparatus may fall into the hands of a president with little regard for rule of law or constitutional protections.