Who determines what 'mental illness' prohibits a person from owning a firearm?
Flip through the DSM-IV some time, it's pretty crazy (no pun intended) how many things are considered "mental disorders."
It's a very, very slippery slope, and seeing that there's no evidence that the mentally ill are more violent than anyone else, I don't really have a problem with them possessing arms. I believe the bar needs to be set very, very high to prohibit someone from exercising a right. Otherwise we're gonna get Chuck Schumer in charge of adjudicating us, and anyone who's got some Xanax during the holidays is going to be prohibited.