I’m trying to say this with utmost respect. But $12k x 330M is $4T/year.
In 2021, the US collected about $4T [0]. The US spent about $7T [1]. So it would take lots of iterations to figure this out.
I think there are some efficiencies so you can reduce some of this budget but introducing a UBI like this would up the spent to $10T and require an extra $6T in taxes every year.
It just seems so non-sensible. As the only way to reach this level would be to inflate money so it bought nothing much.
Proposing this seems less likely than just researching Star Trek replicators to reduce the need to buy food or something.
Or free housing for everyone is more feasible since that seems more achievable than increasing tax revenue by 150%.
Even if you seize every penny of US billionaires assets that’s only $4.2T [2]. At least that covers the first year but then those assets are gone.
[0] https://datalab.usaspending.gov/americas-finance-guide/reven...
[1] https://apnews.com/article/business-economy-government-spend...