Comment Re:Not enough money (Score 1) 81
2x seems possible if no government spending is replaced. However your 3x estimate is way too high, people living only on UBI would not be paying taxes (well federal and state) anyway, so you have double-counted them.
The hope (perhaps futile) is that they would remove other government programs (ie social security). Or make everybody get the same government programs (ie everybody gets SNAP and they can use it to buy food, everybody gets the same amount of housing assistance (which must be spent on mortgage/rent/property taxes/untilities/insurance). These would just be part of the UBI, with some restrictions on what you can spend that portion on.