Indiana Gov. Mitch Daniels should have joined the presidential race by this point. Economic conservatives like him, he's beginning to mend fences with social conservatives, his close friend Haley Barbour won't run against him, and most importantly, the D.C. establishment glorifies him as a very serious, fiscally responsible Grown-Up. So what's the hang up? Mostly, he and his wife Cheri don't want to read long exposes about their unique marital history for the next two years. And certain other, shady candidates are trying to exploit this vulnerability and scare him off.