Broadly speaking, there are four categories of bans on the mentally ill possessing firearms: Some states rely solely on the courts to decide whether an individual is a danger to himself or herself and others. Others ban those subject to court orders as well as those who have been involuntarily committed to a mental institution. A small handful of states rely on court orders and commitment to mental institutions, either voluntary or involuntary. And a number of states only prohibit those who have been committed, without the necessity of a court’s input.
A plurality of states fall into the second category — they ban those who have a court order against them or who have been involuntarily committed to a mental institution. Federal law bans firearm ownership by anyone who “has been adjudicated as a mental defective or has been committed to any mental institution.” Twenty-one states, from Republican Arkansas and Texas to liberal Hawaii and Rhode Island, subscribe to that level of a ban.
Virginia does too, though it allows someone who has been committed to possess a firearm after their period of commitment has ended.
Six states — Colorado, Kentucky, Alabama, Alaska, Vermont and New Hampshire — default to federal rules.
California, Connecticut, Maryland, Mississippi and New York apply a stricter standard. Those states include individuals who have voluntarily committed themselves to a mental institution to the list of people who cannot own a gun. Earlier this month, the California legislature passed a law that bans those who have committed certain drug crimes from owning a weapon for 10 years.
Nine states, mostly in the Mountain West, rely solely on the courts to decide whether someone cannot own a gun. And another eight states only ban those who have been involuntarily committed to mental health institutions or alcohol and drug treatment centers.
Indiana and Oklahoma are the only states that put the legal burden on the gun seller, rather than the purchaser. Indiana code prohibits a person from transferring a handgun to someone the seller “has reasonable cause to believe” is mentally incompetent. Oklahoma law prohibits transferring a weapon to “a mentally or emotionally unbalanced person,” though the definition stops there.
New Jersey, a state that only prevents those who have been committed to a mental institution from owning firearms, also includes some antiquated language in their statute. No one “who is presently an habitual drunkard” may receive a gun permit in the Garden State.
The list of how states restrict gun ownership for the mentally ill:
Requires a court order to restrict ownership
Requires a court order or an involuntary commitment to a mental health facility
District of Columbia
Court order, involuntary or voluntary commitment to a mental health facility
Requires an involuntary commitment only
Burden falls on gun seller
No specific statute, defaults to federal standard
Source: National Conference of State Legislatures