Today is the first anniversary of the greatest single assault on our freedom in my lifetime: the signing of ObamaCare. As we consider what this law may do to our country, I can't help but reflect on a medical miracle made possible by the American health-care system. It's one that holds special meaning for me.

Some years ago, a little girl was born with a serious heart defect: Her aorta and pulmonary artery were reversed. Without immediate intervention, she would not have survived.

The...