News flash: Women are leaving the workplace in droves to become full-time mothers. Two years ago Karen Hughes resigned as counselor to President Bush to go back to Texas and spend time with her family. In response, New York Times columnist Maureen Dowd ridiculed Karen Hughes’ exercise of free choice: “Women will never get anywhere in this boys’ administration, or this boys’ town, or this boys’ world, if they’re going to sacrifice prime West Wing real estate every time their husbands and kids kvetch.” Not to ruin your day, Ms. Dowd, but Karen Hughes is not an aberration. According to...