03/21/2011 08:33 am ET | Updated May 25, 2011

Little-Known Colleges Exploit Visa Loopholes To Make Millions Off Foreign Students

Early on a Friday morning, four college students stand shivering in the parking lot of an office complex in Sterling, Va. The building itself is unremarkable, red brick and dark glass, but security cameras are bolted to the walls, cement posts line the perimeter, and coils of concertina wire surround the trash bins. This is a branch of U.S. Immigration and Customs Enforcement, the investigative arm of the U.S. Department of Homeland Security.

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