Frankly, I doubt the 'Rats are going to turn anything up simply because I don't think there's anything to turn up.
He got shot down to go to Vietnam. Kerry and his ilk were making it hell to be even in the Guard and the war was winding down. George decided to get on with life like so many others.. Still, he did good. Nothing to be ashamed of. Thats why he isn't. Folks in the Democrat party just cannot accept or believe other folks don't move on to something else without seriously screwing up.