When Blas Burboa Leyva of Michoacan, Mexico heard about the H-2A guest worker program in the United States, which allows employers to bring in foreign farmworkers for seasonal jobs, it sounded like a good way to cover the expense of law school. But Blas quickly discovered the abusive nature of America's guest worker program for farmworkers and other low-skill laborers.

"We didn't complain because we were afraid of the company," Blas said. "Really, you're afraid. You signed a contract; you have to fulfill it, right? That's what the law requires."