In Iowa on Saturday, Trump said that he doesn't consider McCain, a prisoner of war in the Vietnam War, to be a war hero.
The front-runner for the Democratic nomination, Hillary Rodham Clinton, not only harshly criticized Trump during a campaign event in Arkansas, she accused the GOP field of being slow to repudiate Trump's other controversial statements.
The Democratic nominee in 2004, Secretary of State John Kerry, says in a statement that anyone who doesn't know that McCain is a war hero only proves that he knows nothing about war and even less about heroism.