Not from the US but isn’t it like that US Citizens do not have to register their current place of living? If true I think they could get a grip of the gun madness by fixing that problem.
They could couple permission for buying guns and ammo to have the buyer have a registered residency and showing their ID which would be checked against a federal database which logs the amount of guns and ammo bought.
If a buyer is reaching some tresholds they’d have to ask for a permit and give some convincing reasons why they need them. Especially when they want to buy AR’s or other heavy weaponry.
When set in effect, every US citizen has to register their current weapons. After a grace period, owning unregistered weapons and getting caught will get the buyer a ban for owning weapons and having to re-apply for permissions after some time. Getting caught multilple times is a perma ban.
Every US citizen should have the right to buy guns and ammo to protect themselves even if they don’t have a permanent residency. Those could be allowed to buy a handgun, also logged in the federal DB with their ID or SSN.
Everyone who wants a permit to buy guns needs to complete a training from a state agency.
That long-ass plan for a better world would see the first major roadblock with the refusal to register their residency by at least 50% of the US-population, right? And it could also be that many left leaning, dems or libertarians would give that idea a hard pass.
So yeah…probably every part of this plan collides with the US idea of individual freedom. Take a look at Switzerland maybe.