Laphonza Butler sworn in as California's newest senator

Schumer announces U.S. Senate trip to China, Japan, South Korea

Laphonza Butler of EMILY's List to replace Dianne Feinstein as senator

Controversial military aid for Egypt held by new Senate Foreign Relations Committee chairman

The complicated senate race to replace Diane Feinstein

Analysis-Feinstein's death poses two big questions for US Senate Democrats

Dianne Feinstein: Trailblazing Senator dies aged 90

Man shot at protest over plans to reinstall controversial New Mexico conquistador statue

Chinese hackers stole 60,000 emails from senior State Department officials in May, source says

US Senate secures votes to advance temporary government funding bill

Senate unanimously passes formal dress code

Bob Menendez: US senator pleads not guilty as FBI probes Egypt ties