"We have our hands full with impeaching the president right now, and that's going to take up our limited resources and time for a while," Nadler said on a radio show.
Sen. Elizabeth Warren is endorsed by the Working Families Party, a progressive group that backed fellow progressive Sen. Bernie Sanders in the 2016 campaign.
The comments came in response to an article in The New York Times that surfaced a previously unreported allegation of sexual misconduct from the justice's time as an undergraduate at Yale University.
Feinstein had already committed to backing Biden's candidacy for president before he announced his campaign in April.
An estimated 71.6 million people watched the final debate between White House contenders Hillary Clinton and Donald Trump on TV on Wednesday.
Clinton and Trump agree on this issue, but they're both wrong about how to fix the problem, says Pinar Çebi Wilber.
There isn't a "chorus" behind Donald Trump's debate performance, experts told CNBC.