It's not obvious how much of this is Sanders' impact on Biden vs. Sanders' impact on the party as a whole, but Biden's pro-union and pro-worker stances are pretty pronounced compared to Obama and Clinton (and remarkably so compared to Trump, and Bush). So he's easily the most pro-worker/union president in my lifetime, which is a fairly Bernie-ist position.
Same with (partial) student debt relief, and you see shadows of the Green New Deal in the Inflation Reduction Act.
Same with (partial) student debt relief, and you see shadows of the Green New Deal in the Inflation Reduction Act.