I have to respond to this because the disingenuity required to post something like this stems from pure dogma.
Bernie as an independent couldn't sponsor or author bills because our two party system makes it nearly impossible.
Both parties are very entrenched in their "political victories" so Bernie could have authored a bill that would somehow usher in Utopia and the ruling party would have someone post an identical bill and go with that.
Independents have NEVER been able to author bills, so asking that question is just ignorant of how the Congress works.
What Bernie did successfully was to file amendments to existing bills and NO ONE was more successful at getting amendments passed than Bernie Sanders, both in the House and Senate.
For anyone to put out stuff like "Bernie did nothing in his 30+ years" means they are purposefully ignorant to such an extent that they are too lazy or stubborn to type "Bernie Sanders accomplishments" into Google.
I mean, damn.
As for "Give me bills he's championed..." again...Google.
You want others to do the work only so that you can put forth a canned response. That's bullshit. Do your own homework.
If you try to answer and literally can't find the answer after diligent searching, THEN ask. Otherwise, you're relying on lazy dogma and any pretense of thoughtfulness is exposed as disingenuousness.
Time to abandon the bumper sticker bulllshit and bring something besides twitter takes.