What Are John McCain's Legislative Achievements? What Foreign Policy Experience Does He Have?

I know when I was a teenager I heard the government wouldn't go back & look for the Vietnam Vets who didn't return home & it was shocking (until I thought about it) to find McCain was the person in charge of that. There is the saddest video of the women at the meeting just asking for his help & he gets up & walks out of the meeting. I am not sure where to find the info. but check the Vietnam Veterens against McCain & they have several videos & they go into the things he has done against the veterens.