At a CNN climate change forum, the California senator said she agreed with former Democratic presidential candidate Jay Inslee in opposing the Senate procedure.
“The future of our country is sacrificed at the altar of the filibuster," the former Senate majority leader wrote in a New York Times op-ed.
The former Senate majority leader said it wasn't a matter of if the legislative tactic would end but "a question of when."
Senators may block a key defense bill to force President Trump to get congressional approval for a war on Iran.
It involves blowing up an arcane procedural rule in the Senate known as reconciliation.
"You should be a little bit nervous if Donald Trump supports it," the 2020 presidential candidate said.
The 2020 presidential candidate announced her stance Friday at a conference with a civil rights group.
The 2020 Democratic presidential contender running on a message of compromise and bipartisanship is taking a second look at the filibuster.
The longtime senator often defended the filibuster when it benefitted him, but he hasn't always been a fan of the chamber's supermajority requirement.
Inslee, a Democrat, has indicated he might announce a 2020 presidential bid primarily focused on climate change as soon as this week.
It’s difficult to imagine any of Sanders’ major policy proposals passing in the Senate without a change to the chamber’s longstanding 60-vote threshold.
If Progressives Want To Nuke The Filibuster, They're Going To Have To Convince A Bunch Of Democrats First
Ambitious health care and climate proposals have no chance of passing with the filibuster on the books. But many Democrats say they want to keep it anyway.
Senators say they're open to restoring the filibuster for Supreme Court nominees.
If only they'd had more time, Sen. Chris Coons said.
"This assault on our democracy demands as robust a resistance as we can possibly mount."