[jimmies]

I am international myself and have seen international students cheating before. In one (really bad, no one cares) course that I took as an undergrad, everyone cheated. I was the only one who came to class and didn't cheat (or didn't know that you could cheat in that course). It was, perhaps not noble, but not rare for students (American + non-American) to pass on their exams to the next class and professors discuss how to deter that too.

[hkmurakami]

This is exactly why I'm against this behavior -- the only one that are punished are the ethical ones [1]. Kept unchecked, soon you will have pressured all the ethical people into giving into cheating as well!

[1] It's like doping in sports.