Three Democratic senators filed a brief in federal court on Tuesday supporting a lawsuit to end the National Security Agency's bulk collection of phone records.
Sens. Mark Udall (Colo.), Ron Wyden (Ore.) and Martin Heinrich (N.M.), who all have access to classified information as members of the Senate Intelligence Committee, argued that the controversial program does little to combat terrorism.
"[The senators] have reviewed this surveillance extensively and have seen no evidence that the bulk collection of Americans’ phone records has provided any intelligence of value that could not have been gathered through less intrusive means," lawyers for the lawmakers wrote.
"Because the government’s call-records program needlessly intrudes upon the privacy rights of hundreds of millions of Americans, [the senators] believe the bulk collection of these phone records should be ended," they wrote.
The controversial program collects phone numbers, call times and call durations on virtually all U.S. phone calls, but not the contents of communications.
The lawmakers filed their brief to support a lawsuit from a coalition of civil liberties groups led by the Electronic Frontier Foundation.
The lawsuit claims that the bulk collection violates constitutional rights to privacy, free speech and free association. Public Knowledge, TechFreedom, a Unitarian church and a California gun rights group also signed on to the suit, which was filed in California.
The senators are also pushing legislation to end the bulk phone data collection.
Defenders of the program argue it is critical for "connecting the dots" and thwarting terrorist attacks.