by John Stossel What does it take for a parent to get arrested? Surprisingly little. Scott and Heather Wallace of Hewitt, Texas, encourage their three boys to play outside on their own to build independence.One day, driving home from karate practice, 8-yearold Aiden misbehaved. So, half a mile from home, Heather stopped the car and told him, 'Walk the rest of the way on your own.'...