KANSAS CITY, Mo. -- At the annual NAFSA: Association of International Educators conference, sessions focused on every aspect of the international student experience -- recruitment and admissions, student and residential life, and challenges in the classroom. The attendees, more than 7,000 of them, discussed every category of international student and scholar, those in the United States on F visas, Js and Ms. On Friday, the final day of the conference, a session focused on a segment of students who don’t fit into any legal category – the undocumented.