Republicans and Democrats voted to advance a measure to extend a warrantless surveillance law, but skeptics in both parties were still pushing to make substantial changes before a final vote.

The measure enjoys backing from Republicans and Democrats, but it is strongly opposed by libertarians on the right and progressives on the left who are deeply skeptical of granting the government broad spying powers without strict oversight and limits.

The Senate has advanced legislation that would reauthorize a key U.S. surveillance tool as lawmakers and the Biden administration rushed to tamp down fresh concerns about the program violating America