I've always believed that in our rush to get untangled from Vietnam after the Paris "Peace" Accords, men were knowingly left behind in the hands of the Viet Cong, the Laotians and in the case of some high-powered prisoners, the North Vietnamese themselves.
Former Special Forces officer LtCol Bo Gritz made his shameful grandstanding plays in the early 80s with announcements that he had evidence and was planning rescue missions, but nothing ever came of that, of course.
I just finished "Inside Delta Force," by CSM Eric L. Haney, USA (Ret.), a founding member of 1st SFOD-D. CSM Haney says that the US knew in 1981 that approximately 125 Americans were still alive in the hands of the North Vietnamese, but were being held in Laos so that the Viets could truthfully say, "There are no Americans held in Vietnam." Twice missions were laid on in secret to rescue these men, and twice Bo Gritz came out of the woodwork and into the spotlight to say that he had intel and was putting together a "rescue mission" from his base in Florida.
CSM Haney hypothesizes in the book that Gritz was used, knowingly or unknowingly, by those in America who would have had their careers damaged by the confirmed knowledge that men had been willingly left behind in the hands of the enemy. CSM Haney believes the the POWs being held were then executed and their remains destroyed to prevent any possible rescue or confirmation of their existence.
He also describes a conversation he had with a "former highly placed member of the North Vietnamese diplomatic corps" where he was asked point blank why the Americans never attempted to recover the remaining POWs after the conclusion of the war.
Do you believe POWs were knowingly and intentionally left behind? If so, do you believe that government policy or personal ambition and treachery saw to it that they were never repatriated? What responsibility does Bo Gritz bear for playing a part in it?
I recommend the book highly. It's a great look at Delta from someone on the inside. His description of the selection and training process is terrific.