I don't disagree but laws already do that. Federal law prohibits people from possessing guns who have been convicted of domestic violence misdemeanors or are subject to protective orders. Some states even have laws requiring proof that they actually relinquished their firearms.
I can't verify that this is true.
But also, the "gun show loophole" allows anyone to sell to anyone, so none of this even applies. Whatever laws exist are toothless.
Also, are there laws that restrict the sale? Or are you just not allowed to have it but there is no onus on the seller? I'd like to restrict the right to sell it.
It seems that there are some simple things that we can do and we're just choosing not to do anything at all.