A composite photo of Elizabeth Warren, at left, and Bernie Sanders
  • Sens. Sanders, Warren and other Democrats introduced a bill to extend Social Security solvency through 2096.
  • They also proposed expanding benefits by $2,400 a year.
  • This comes as Biden has ramped up attacks on the GOP over their past comments suggesting cuts to the program.

Sen. Bernie Sanders wants retirees to have more money — and he wants it to come from higher taxes on the wealthy.