EXCLUSIVE: Billionaire entrepreneur Mark Cuban lambasted former President Trump on Tuesday as a "snake oil salesperson" while explaining his decision to back President Biden in the upcoming election. Why it matters: The endorsement from one of America's most high-profile businessmen comes as the 81-year-old president struggles in the polls amid swirling questions about his age and his handling of the Israel-Gaza conflict. • "I don't want a snake oil salesperson as President," Cuban told Axios by email Tuesday. "I'm voting for Biden/Harris over Trump all day every day." This isn't the first time Cuban has voiced his support for Biden — or his disapproval of Trump. Read more about his remarks at the link in our bio.