Let's not forget that yellow belly McStain not only made propaganda radio announcements for the North Vietnamese; but after the war, he actively covered up the fact that hundreds of POWs had been left behind in Vietnam and Laos as hostages. And by these actions he discouraged or prevented Presidents Carter and Reagan from taking actions to bring the men home.

Sauce: http:// www.theamericanconservative.com/articles/mccain-and-the-pow-cover-up/