S. 770 · 119th Congress Social Security Expansion Act StageIn committee SponsorBernie Sanders Introduced2025-02-27 Latest action2025-02-27 · Introduced in Senate Follow Summary Text Subjects Cosponsors (10) Votes (0) Actions Cosponsors (10) Cory Booker Current member Senate NJ Democrat Kirsten Gillibrand Current member Senate NY Democrat Ed Markey Current member Senate MA Democrat Jeff Merkley Current member Senate OR Democrat Alex Padilla Current member Senate CA Democrat Tina Smith Current member Senate MN Democrat Chris Van Hollen Current member Senate MD Democrat Elizabeth Warren Current member Senate MA Democrat Peter Welch Current member Senate VT Democrat Sheldon Whitehouse Current member Senate RI Democrat