Treating this as semi-seriously as @kenobi_65 did:
First, let’s say that the numbers cited are correct, and that 2/3 of American’s don’t own a gun, and that with rounding, felons, etc, around 150 million people (based on a 2020 census that had the adult population around 260 million, but over 200 million if it’s the equally silly assumption that we’re arming the kids too, but staying with the OP for the moment).
Okay, what does that entail. Well first, we’re going to assume that in order to pass, the government is going to have to pay for this, otherwise, people aren’t going to buy guns before groceries (in most cases, especially the sort that didn’t already own guns).
So, let’s assume a basic budget for a low cost (ha, government procurement, low cost? I crack myself up) of say $300 for a basic 9mm handgun (seriously, this is on the pretty darn low end for current 9mm costs at retail so plausible). Now, the OP said you have to carry at all times, so let’s include a reasonably priced holster and a belt that can handle the weight, let’s just figure another $50 there. We’re getting a bit pricey, so assume the government, DOESN’T give you a safe, you’re going to have to hope the trigger lock is good enough (it isn’t) in terms of securing the safety of other household members.
Also figure in a ONE time inclusion of 2 50-round boxes of 9mm (again, retailing around $50 total), and you’re set. Well, of course you have no cleaning supplies, or anything to maintain the weapons, and no damn training, but there you have it, around $400 per person to comply with the minimum legal requirements of the OP for adults.
Which, by my math, says the government just handed out roughly 60 billion USD. Which is great (major /s), after all, we’ve spent more on boondoggles in the past, but I don’t think the Republicans (who obviously would be sponsors of such a proposal, duh) want to spend that much money on it.
ESPECIALLY because from their POV, all “right thinking patriots” already own one or more guns, so all of these would be going to them horrible, brown, low class, poor, welfare criminal folk! The very people they fear arming the most!
[ to be extra clear again, I’m paraphrasing their feelings, NOT my own!]
So nah, will never happen. Just like how in ye olde days the NRA supported gun control if it meant keeping guns out of the hands of those they disapproved of, like the Black Panthers.