This issue has been brought up numerous times and I recently posted something on this in another thread. I think the question of whether gun violence could be solved by focusing on mental health demands a thread of its own. Here are some problems that I foresee in seeing mental health as a solution to gun violence ... Mental Illness affects a large percentage of the population. According the National Institute of Mental Health, ~26% of adult Americans suffer from a diagnosable mental disorder in a given year. How do you test, evaluate and administer this program? In a time where there is so much pressure to reduce government bureaucracy and intrusion, this would appear difficult to achieve politically. Gun violence is rare even amongst those with diagnosed mental disorders. Gun advocates ask how we can restrict firearms from those who've never engaged in violence. Likewise this argument could be used by those with diagnosed disorders. Are you willing to deny gun ownership based on the potential that they might be a few percentage points more likely to engage in gun violence? Even if we managed to identify key markers for gun violence, it's likely that it's a combination of physical and mental conditions combined by life circumstances. Are you willing to deny people the ability to own guns because they have gene 'X'? Or is there a governing body to monitor the events in one's life in order to anticipate when one is more likely to be pushed over the edge? For example: You have gene 'X', and we were willing to let you own a gun. But now that you've been through a divorce, messy child custody and job loss, you've exceeded your risk allowance, so we'll have to confiscate your weapons. Can you see the problems involved here? How do you suggest we deal with them?