https://www.politico.com/news/2020/08/17/biden-contemplated-suicide-after-1972-deaths-wife-daughter-397487
and they want him on the button.. he meets almost every current criteria for restriction of owning a firearm.
SUMMARY OF FEDERAL LAW
FEDERAL LAW REGARDING MENTAL ILLNESS AND GUNS
The Gun Control Act of 1968 prohibits any person from selling or otherwise transferring a firearm or ammunition to any person who has been “adjudicated as a mental defective” or “committed to any mental institution.”16 According to federal regulations, a person has been “adjudicated as a mental defective” if a court, board, commission, or other lawful authority has determined that he or she, as a result of marked subnormal intelligence, mental illness, incompetency, condition, or disease meets one of the following criteria:
Is a danger to himself, herself, or others.
Lacks the mental capacity to contract or manage his or her own affairs.17
The term “adjudicated as a mental defective” is defined to explicitly include a finding of not guilty by reason ofinsanity or incompetence to stand trial.18
Federal regulations define a person as “committed to a mental institution” if a court, board, commission, or other lawful authority has formally committed him or her to a mental institution. The term is defined to include involuntary commitments, but does not include persons who are admitted to a mental institution voluntarily or for observation.19
States may prohibit additional categories of people from purchasing or possessing firearms on the basis of mental illness. Detailed information on these laws is contained in our summary on Categories of Prohibited People.
https://lawcenter.giffords.org/gun-laws/policy-areas/who-can-have-a-gun/categories-of-prohibited-people/