• Dianne Feinstein, the oldest member of the U.S. Senate and the longest-serving senator from California, has died at age 90.
  • Feinstein's death leaves vacant her powerful Senate seat, requiring Gov. Gavin Newsom to appoint a temporary successor.
  • The Democratic senator's decades-long career was studded with major legislative achievements on issues including gun control and the environment.

U.S. Sen. Dianne Feinstein of California has died at age 90, her office confirmed Friday.

Feinstein, a Democrat, was the oldest member of the Senate, where she had served since 1992. She held her seat in the chamber longer than any other woman and any other senator from California.