John McCain is undoubtedly a hero for what he endured in North Vietnam. He has been likewise courageous as a Senator in pursuing his marquis causes of campaign finance reform, curtailing "earmarks" and other pork and, up until recently, being a strong voice against torture in all of its forms. But all that neither does nor should immunize him from examination as to his fitness to become President.
We've all known for years that he's been treated for melanoma. The current status and prognosis for that is extremely relevant, especially since he's already 71, because his VP choice could have a much greater chance to succeed him. And, as we've learned, the PTSD question is a serious, and open, one. We'll see if the "Straight Talk Express" responds openly on those issues.
When you run for President, you don't get a free pass. As you get closer, the scrutiny intensifies. There's nothing wrong with that.
Like when we discover that he needs Joe Lieberman whispering in his ear yesterday to remind him that Iran's a Shiia country and Al Qaeda is a Sunni jihadist group. Talk about a loop of film we'll be seeing this fall.