Ultimately, the students said that because the Department of Homeland Security’s website certified the University of Northern New Jersey, they believed the institution was legitimate. In addition, the website of the New Jersey Education Department listed it as approved. So did the website of the Accrediting Commission of Career Schools and Colleges, a national body.
It's easy to think "Oh, those students knew they were being duped, they knew what they were getting into"- but if you're coming from another country with a completely different way of doing things, and this university which appears to be accredited AND have the blessing of the US Government pops up going "Apply here and we'll give you a visa, you don't have to go to class and we promise it's above-board"... I don't think that's going to immediately register as a scam. Odd, maybe, but then you see they're accredited and you think "well if it was a scam they wouldn't have accreditation."