An undocumented immigrant's journey from a New York City homeless shelter to the top of his Princeton class Dan-el Padilla Peralta has lived the American dream. As a boy, he arrived in the United States legally with his family. Together they had traveled from Santo Domingo to seek medical care for his mother. Soon the family's visas lapsed, and Dan-el's father eventually returned home. But Dan-el's courageous mother decided to stay and make a better...