The bill initially passed the House in a 278-136 vote in March. But the Senate amended the measure to add more legal protections for certain individuals targeted by the Foreign Intelligence Surveillance Court. The changes forces it to be bounced back to the House, which will need to pass it a second time.

Under a deal struck with leadership, the House is expected to consider an amendment, brought by Reps. Zoe Lofgren (D-Calif.) and Warren Davidson (R-Ohio), that would block law enforcement from being able to access web browsing data without a warrant.