The endorsement comes less than a week after the Vermont senator ended his presidential bid.
“I’m not saying no, but it's not something I’m actively pursuing. I’m just keeping the door open,” Cuban said in a Fox News interview.
Bill Clinton and wife Hillary reportedly have an estimated combined net worth of $120 million.
Even as Biden becomes the apparent candidate, Democrats are looking elsewhere.
Biden-Trump showdown looms after Sanders ends presidential bid
The "Bowling for Columbine" filmmaker recently revealed the part he could have played during the 2016 election.
The disease expert has been sent various threats
Sen. Bernie Sanders has a big deficit to make up against Joe Biden in the delegate count.
The newborn was found wrapped in a towel inside a bag.
Hillary Clinton shared how her daughter Chelsea taught her a lot about patience.
Meghan Markle and Prince Harry are believed to be not on good terms with President Donald Trump.
Clinton tweeted that people should not take medical advice from a man who looked directly at the solar eclipse.
Hillary Clinton lectured Donald Trump on Twitter, but netizens defended the POTUS.
The Hawaii congresswoman threw her support behind former Vice President Joe Biden, saying he has a good heart.
US drops case against Russian firm accused of 2016 election meddling
Hillary Clinton was accused of overstepping her boundaries when she called out Donald Trump for not doing enough amid the coronavirus pandemic.
Betty Gilpin reacts to the assumptions that have been made about the movie "The Hunt."
Sanders shrugs off primary defeats, remains in Democratic race
77% of Americans believe big tech firms such as Facebook and Google have too much power, a report from the Knight Foundation says.
The Vermont senator says he's looking forward to Sunday's one-on-one debate with Joe Biden and will grill his opponent on such issues as healthcare and immigration.
The races on March 17 are likely the last stand for Democratic presidential candidate Bernie Sanders.
Joe Biden and Bernie Sanders will compete for Michigan's 125 pledged delegates on Tuesday.