be careful what you wish. They maight deem all Christians as bat$h#% crazy and deny them the ability to buy guns. He who labels others has the power in liberal lalaland.
People can be Christian or believe in Odin or believe in "global warming" and as long as they don't expect to draw a gov't check because of their belief they would not be barred.
That's why I suggested SSI disability payments as a bar, and not a simple psychiatrist visit or prescription for an antidepressant. I am not talking about disability for physical impairments, either.
If someone's mental illness is severe enough that he is unable to work for a living and thinks that I (as a taxpayer) need to be responsible for his food, shelter, clothing, medical care and entertainment, then why shouldn't he demonstrate that he's not so impaired that he shouldn't buy a gun? Don't take the money and there is no bar. (I doubt that many families, even wealthy families like Lanza's, leave monthly SSI payments on the table.)