Source?
Wiki
"Vietnam Veterans Against John McCain[1] is a 527 Political Action Committee formed in 1997.[2] The group makes controversial allegations against Senator John McCain concerning his time as a prisoner of war in Vietnam. The group was founded by Vietnam veterans Jerry Kiley and Ted Sampley.[2]
The group has made a video in which Bob Smith, former Republican Senator from New Hampshire, Bob Dornan, former Republican Representative from California, former Congressional staffers and others make various allegations against McCain.[3] The group has also disseminated taped excerpts[4] of McCain's questioning of Dolores Alfond of the National Alliance of Families before the United States Senate Select Committee on POW/MIA Affairs."
McCain solely responsible for block U.S. Senate action to recover missing POW's. That is a fact. McCain is a snake, not a hero.
Do your own research.