@vikorr,
vikorr wrote:One thing I've never quite worked out from what I've read of US laws:
- are criminals allowed to purchase weapons?
- are the mentally ill allowed to own weapons?
- are domestically violent people allowed to own weapons?
My presumption is that such varies from state to state, but how common is it (ie as a % of states) for the above to purchase/own weapons?
There is a federal background check system. Generally a felony conviction or a domestic violence misdemeanor will get you added to the list of people who are prohibited from buying a gun.
Only gun stores use the background check system. It is not used by private individuals who are selling one of their guns.
Also, if the government takes longer than three days to provide a background check result, the sale is approved.
If someone has been involuntarily committed to a mental institution, they as well are added to the list of people who are not allowed to have guns.
If a mentally ill person is not any particular danger though, they are not prevented from having guns.