I have nothing to say about profiling individuals but cheating appears to be a huge issue among international students. Per the WSJ [0]:

    Public universities in the U.S. recorded 5.1 reports of alleged cheating for every 100 international students, versus one report per 100 domestic students

Faculty singled out Chinese students in particular.

[0]: http://www.wsj.com/articles/foreign-students-seen-cheating-m...