Mark Cuban said he once supported Donald Trump's campaign until he realized that Trump was someone who never learns.
Michael Reaves via Getty Images; Joe Raedle via Getty Images
- Mark Cuban told the "All-In" podcast hosts that he used to talk to former President Donald Trump a lot.
- During Trump's 2016 campaign, Cuban said he tried to give some advice, but it went unheeded.
- Cuban said he would try to engage Trump on policy but it "never got anywhere."
Mark Cuban wasn't always a never-Trumper.