What a can of worms.
Throughout his Senate career, McCain has quietly sponsored and pushed into federal law a set of prohibitions that keep the most revealing information about these men buried as classified documents. Thus the war hero who people would logically imagine as a determined crusader for the interests of POWs and their families became instead the strange champion of hiding the evidence and closing the books.
The sum of the secrets McCain has sought to hide is not small. There exists a telling mass of official documents, radio intercepts, witness depositions, satellite photos of rescue symbols that pilots were trained to use, electronic messages from the ground containing the individual code numbers given to airmen, a rescue mission by a special forces unit that was aborted twice by Washington—and even sworn testimony by two Defense secretaries that "men were left behind." This imposing body of evidence suggests that a large number—the documents indicate probably hundreds—of the US prisoners held by Vietnam were not returned when the peace treaty was signed in January 1973 and Hanoi released 591 men, among them Navy combat pilot John S. McCain.