Joe Biden
Joe BidenThinkstock

Former U.S. Vice President Joe Biden says he is not ruling out a White House run in 2020.

"I’m really hoping that some other folks step up. I think we have some really good people," Biden said of the potential other 2020 Democratic hopefuls in an interview on MSNBC that aired Sunday.

The former vice president added that he needs to know that whoever carries the Democratic Party's nomination is someone who can beat President Donald Trump.

Asked “what would make Joe Biden really consider running in 2020 for president?", Biden said former President Barack Obama gave some good advice.

"I know Barack always asked me that question. And he said what’s going to make the decision," Biden said. "I‘ve got to be able to look in the mirror, and, if I walk away, know I'm not walking away because I’m afraid or I’m worried about losing or that I just don’t want to take on the responsibility."

Biden decided against running for president in 2016 following the death of his son, Beau, from brain cancer.

While he urged the American public to give Trump a chance after he was elected, the two have also locked horns.

Several weeks ago, Biden suggested that he would “beat the hell out of Trump” over how he relates to women.

Trump fired back in a Tweet, asserting that Biden “would go down fast and hard.”

"Crazy Joe Biden is trying to act like a tough guy. Actually, he is weak, both mentally and physically, and yet he threatens me, for the second time, with physical assault.

"He doesn't know me, but he would go down fast and hard, crying all the way. Don't threaten people Joe!" Trump warned.

During the election campaign, Biden had harsh criticism for Trump, saying he had “no clue”. In another instance, Biden said that Trump “would’ve loved Stalin”.