Our series, A More Perfect Union, aims to show that what unites us as Americans is far greater than what divides us. In this installment, we share an extraordinary story of a reunion. Imagine being so desperate for your child’s safety that you put her in the hands of a complete stranger and rely on him to do the right thing. That's what one mother faced 15 years ago, as she tried to get her daughter out of war-ravaged Sierra Leone to the U.S. for medical care. Dana Jacobson reports.