I don't know if union vs non union is good for nsg school - that was really something I didn't start to think about until I was out of school. Physician assisted suicide is a good one - there was a movie in the 80s (I think called "Whose Life is it Anyway") that dealt w this issue. In school, we had to do pretty much the same thing. I would stay away from the general hot button issues like abortion, because those will cause more of a fight - at least they did in my class.
To do adn vs bsn, you have to have a diverse group of ppl....and a BSN group isn't quite diverse in the educational aspect
Plan B, availability of health care to all, should McD's and other fast food restaurants be held accountable, etc etc etc.