HANOI -- As a U.S. Navy pilot, John McCain flew 23 bombing sorties over Vietnam before he was shot down and incarcerated in the infamous "Hanoi Hilton" prison camp. The courage he displayed behind bars gave him the aura of a war hero, and it is still powering his electoral appeal.

Yet now, even the jailers who once tortured Sen. McCain are lining up to offer effusive -- if somewhat embarrassing -- endorsements for his presidential candidacy.

"If...