The American Civil Liberties Union filed suit in New York federal court against the U.S. Justice Department and other federal agencies, challenging the constitutionality of the government’s review of millions of phone call records on Verizon subscribers. ACLU lawyers contend the government’s "dragnet acquisition" is likely to have a chilling effect on speech.

"The practice is akin to snatching every American’s address book — with annotations detailing whom we spoke to, when we talked, for how long, and from where," ACLU deputy legal director Jameel Jaffer said in the complaint, which alleges First Amendment violations. "It gives the government a comprehensive record of our associations and public movements, revealing a wealth of detail about our familial, political, professional, religious, and intimate associations."