Florida Sen. Marco Rubio on Monday once again blasted Republican presidential front-runner Donald Trump for failing to denounce the Ku Klux Klan.<br />Trump appeared Monday on NBC's "Today" show and claimed that a "very bad earpiece" caused him to mishear a question he was asked Sunday on CNN about David Duke, the former KKK leader.<br />Duke has endorsed Trump, saying that voting for anyone but him "is really treason to your heritage."<br />Failing to denounce Duke means that Trump is "unelectable now," Rubio told supporters in an airplane hanger here.<br />"I don’t care how bad the earpiece is, Ku Klux Klan comes through pretty clearly – and he refuses to criticize it," Rubio said to cheers from the crowd.<br />Rubio made the remarks at the first of his five stops Monday, a packed day of campaigning ahead of Super Tuesday, when 11 states will reward 595 delegates on a proportional basis.
