Debt. The government will simply pump more liquidity into the economy. Not that this will cause any side effects, right? This idea is all a non-starter anyways, at least in the US. As a "pure" form of communism, there's little to no real support once the details are actually discussed. Redistributing this amount of money is impossible; we can't even run a balanced budget in the US.

It goes against so much of the American ethos of independence and self-worth that I think we'll have self-driving flying cars before BI or UI.